Fund Overview Fund Overview Call Us Advisors: 800.368.4410 Investors: 800.548.4539 Share Class I N I Z NAV | as of 11/13/2025 $19.44 -$0.52 (-2.61%) Morningstar | Style Box V B G L M S Morningstar Rating Rated against 516 Small Growth funds as of 10/31/2025 View Morningstar Details Growth of $10,000 (Hypothetical) Since Inception 06/01/2011 to 10/31/2025 = $36,552.54 From: To: 3YR 5YR 10YR INCEP. INCEP. 3YR 5YR 10YR INCEP. SEE ALL PERFORMANCE The performance data shown represents past performance. Past performance is not a guarantee of future results. Current performance may be lower or higher than the performance data quoted. The investment return and the principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. For performance information through the most recent month-end please call 800.548.4539. From time to time, the advisor has waived fees or reimbursed expenses, which may have resulted in higher returns. The listed returns and yields of the Fund are net of expenses, and the returns and yields of the indices exclude expenses. For time periods where the fund inception date preceded the benchmark, the benchmark data will not be shown. Read Important Investment Disclosures Objective The Fund seeks to provide long-term capital appreciation by investing in small to mid cap stocks exhibiting consistent, sustainable earnings growth. Why Consider Provides investors with exposure to a portfolio of small and mid cap growth companies Manages risk with a sell discipline and exposure limits for each company and diversification of sector and growth profiles embedded in the portfolio construction process Employs a fundamental, research-oriented investment process that is built on the belief that a company’s ability to generate consistent, long-term sustainable earnings growth will drive enhanced stock price performance over time Documents Fact Sheet Summary Prospectus Prospectus SAI Q1 Holdings Q3 Holdings Distributions All Holdings Annual Report - Class N Semi-Annual Report - Class N Annual Report - Class I Semi-Annual Report - Class I Annual Financial Statements and Other Information Semi-Annual Financial Statements and Other Information View All Documents Investment Style AMG GW&K Small/Mid Cap Growth Fund has an Equity Income Objective, seeking to achieve income and capital appreciation. Large Mid Small Value Blend Growth Equity Objective AMG GW&K Small/Mid Cap Growth Fund is categorized as Small-Growth. It invests in small-cap companies with high risk. Morningstar Ratings Risk-adjusted returns as of 10/31/2025 Overall Rating (of 516) 3 Years (of 516) 5 Years (of 496) 10 Years (of 392) Category Small Growth Read Important Investment Disclosures Daniel L. Miller, CFA PARTNER AND DIRECTOR OF EQUITIES Dan is a partner of the firm and brings over four decades of investment management experience to GW&K. As director of our equity department, he is responsible for overseeing all aspects of our equity investment teams including portfolio management, research, and trading. He is a member of the firm’s Management, Investment, and ESG Committees. Dan has worked with various companies in the Boston area as an investment and financial consultant. Prior to joining GW&K, he spent 21 years at Putnam Investments in Boston, where he was chief investment officer for the specialty growth group and oversaw a team of twenty and up to $100 billion in assets under management. He was also a portfolio management team member of several small and mid cap growth funds, the lead manager for the Putnam New Opportunities Fund, and a member of Putnam’s management committee and partners group. He began his career as an analyst at Morgan Stanley. Dan graduated from the University of California, Berkeley, with highest honors, and received his MBA from Stanford University Graduate School of Business. He is a CFA® charterholder and is a member of the CFA Institute and the CFA Society Boston. Dan serves on the board of trustees for The Rashi School in Dedham, Massachusetts. Joseph C. Craigen, CFA PARTNER AND PORTFOLIO MANAGER Joe serves as a portfolio manager for GW&K’s Small Cap Growth Strategy and is a member of the firm’s Investment Committee. He is also a research analyst focused on our Small Cap Core and Small/Mid Cap Core Strategies. Joe is a seasoned investor with expertise in a number of industries including extensive experience in Information Technology. Prior to joining GW&K in 2008, Joe held research analyst positions at Citizens Funds and Needham & Company, and was a research associate at Tucker Anthony. Joe received an AB in Economics from Harvard College. He has earned the CFA® designation and is a member of the CFA Institute and the CFA Society Boston. Performance Performance Read Important Investment Disclosures Returns Trailing Returns Trailing Returns Monthly Quarterly Calendar Year Returns The performance data shown represents past performance. Past performance is not a guarantee of future results. Current performance may be lower or higher than the performance data quoted. The investment return and the principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. For performance information through the most recent month-end please call 800.548.4539. From time to time, the advisor has waived fees or reimbursed expenses, which may have resulted in higher returns. The listed returns and yields of the Fund are net of expenses, and the returns and yields of the indices exclude expenses. For time periods where the fund inception date preceded the benchmark, the benchmark data will not be shown. Returns for periods shorter than one year are not annualized. Expense Ratios Gross Expense Ratio: 1.10% Net Expense Ratio: 0.87% Expense Cap Expiration Date: 03/01/2026 The Fund’s Investment Manager has contractually agreed, through 03/01/2026, to limit fund operating expenses. The net expense ratio reflects this limitation, while the gross expense ratio does not. The Fund has no up-front sales charges or deferred sales charges. Please refer to the Fund’s Prospectus for additional information on the Fund’s expenses. Distributions & Pricing Distributions Distributions Chart List Historical Pricing Calendar Year Distributions Ex-Date Total Distribution Income Short-term Cap Gains Long-term Cap Gains Dec 16, 2024 $0.126800 — — $0.126800 Dec 15, 2022 $0.268400 — — $0.268400 Mar 24, 2021 $10.027500 — $5.902400 $4.125100 Dec 16, 2020 $1.017200 — — $1.017200 Dec 30, 2015 $0.002700 — $0.001000 $0.001700 Dec 30, 2014 $0.535900 — $0.308500 $0.227400 Dec 30, 2013 $2.059200 $0.025500 $1.679500 $0.354200 Dec 28, 2012 $0.891200 — $0.804200 $0.087000 From: To: Risk & Return Statistics As of: 10/31/2025 3YR 5YR 10YR Alpha Alpha is a measure of performance on a risk-adjusted basis. Alpha takes the volatility (price risk) of a security or mutual fund and compares its risk-adjusted performance to a benchmark index. The excess return of the security or fund relative to the return of the benchmark index is a fund's alpha. 0.19 2.34 -1.06 Standard Deviation Standard Deviation is a measure of the dispersion of a set of data from its mean. The more spread apart the data, the higher the deviation. Standard deviation is calculated as the square root of variance. 17.66 19.76 20.39 Sharpe Ratio Sharpe Ratio is a risk-adjusted measure developed by William Sharpe. It is calculated using standard deviation and excess return to determine reward per unit of risk. First, the average monthly return of the 90-day Treasury bill (over a 36-month period) is subtracted from the portfolio's average monthly return. The difference in total return represents the portfolio's excess return beyond that of the 90-day Treasury bill, a risk-free investment. An arithmetic annualized excess return is then calculated by multiplying this monthly return by 12. To show a relationship between excess return and risk, this number is then divided by the standard deviation of the portfolio's annualized excess returns. The higher the Sharpe ratio, the better the portfolio's historical risk-adjusted performance. 0.44 0.34 0.33 Upside Capture Ratio (%) Upside Capture Ratio (%) is a measure of a manager's performance in up markets relative to a particular benchmark. An up market is one in which the market's quarterly (or monthly) return is greater than or equal to zero. For example, a ratio of 50% means that the portfolio's value increased half as much as its benchmark index during up markets. 92.68 97.44 96.15 Downside Capture Ratio (%) Downside Capture Ratio (%) measures a manager's performance in down markets relative to a particular benchmark. A down market is one in which the market's quarterly (or monthly) return is less than zero. For example, a ratio of 50% means that the portfolio's value fell half as much as its benchmark index during down markets. 91.24 89.16 100.64 Beta Beta measures the relationship between the portfolio's excess return over T-bills (representing a risk-free rate) relative to the excess return of the portfolio's benchmark. A low beta does not imply that the portfolio has a low level of volatility; rather, a low beta means that the portfolio's market-related risk is low. Beta is often referred to as systematic risk. 0.90 0.92 0.98 R-Squared R-Squared ranges from 0 to 100 and reflects the percentage of a portfolio's movements that are explained by movements in its benchmark index. A portfolio with an R-squared of 100 means that all movement is completely explained by benchmark index movement. Thus, a portfolio that invests only in S&P 500 stocks will have an R-squared very close to 100. Conversely, a low R-squared indicates that very little of the portfolio's movement is explained by benchmark movement. An R-squared measure of 35, for example, means that movements in its benchmark index can explain only 35% of the portfolio's movements. R-squared is used to ascertain the significance of a particular beta or alpha and generally a higher R-squared will indicate more useful alpha and beta figures. 95.40 94.13 92.21 Tracking Error (%) Tracking Error (%) , which is often referred to as the active risk of the portfolio, measures how closely a manager's returns track the returns of a benchmark index. Specifically, tracking error measures the standard deviation of the excess returns a portfolio generates compared to its benchmark. This gives an indication of the volatility of a portfolio versus its benchmark. If a manager tracks a benchmark closely, then tracking error will be low. If a manager tracks a benchmark perfectly, then tracking error will be zero. 4.33 5.14 5.74 View All Characteristics & Statistics All Characteristics & Statistics AMG GW&K Small/Mid Cap Growth Fund (ACWIX) Portfolio Characteristics (Equity) Risk & Return Market Cap Valuation Characteristics Growth Characteristics Fund Holdings Fund Russell 2500™ Growth Index Fund Assets (Mil.$) $38 Number of Holdings 78 Weighted Avg. Market Cap (Mil.$) $10,985 $8,783 Median Market Cap (Mil.$) $8,796 $1,652 Weighted Avg. P/E (1-yr Forward EPS) 23.44 23.63 Weighted Avg. P/E (Trailing EPS) 26.11 30.04 PEG Ratio 1.67 1.65 Weighted Avg. P/B 3.88 5.19 EPS Growth (Trailing 3-yr %) 13.13% 12.21% EPS Growth (Trailing 5-yr %) 14.64% 19.62% Forward EPS Growth (1-yr %) 14.53% 11.04% Forward EPS Growth (Long Term %) 11.76% 13.63% Revenue Growth (Trailing 5-yr %) 14.27% 16.99% Return on Equity 14.00% 7.60% Weighted Avg. Dividend Yield 0.50% 0.48% Debt to Equity 77.65 90.16 Trailing 12-Months Portfolio Turnover 32.37% As of: 09/30/2025 Risk & Return 3 Years 5 Years 10 Years Alpha Alpha is a measure of performance on a risk-adjusted basis. Alpha takes the volatility (price risk) of a security or mutual fund and compares its risk-adjusted performance to a benchmark index. The excess return of the security or fund relative to the return of the benchmark index is a fund's alpha. 0.19 2.34 -1.06 Standard Deviation Standard Deviation is a measure of the dispersion of a set of data from its mean. The more spread apart the data, the higher the deviation. Standard deviation is calculated as the square root of variance. 17.66 19.76 20.39 Sharpe Ratio Sharpe Ratio is a risk-adjusted measure developed by William Sharpe. It is calculated using standard deviation and excess return to determine reward per unit of risk. First, the average monthly return of the 90-day Treasury bill (over a 36-month period) is subtracted from the portfolio's average monthly return. The difference in total return represents the portfolio's excess return beyond that of the 90-day Treasury bill, a risk-free investment. An arithmetic annualized excess return is then calculated by multiplying this monthly return by 12. To show a relationship between excess return and risk, this number is then divided by the standard deviation of the portfolio's annualized excess returns. The higher the Sharpe ratio, the better the portfolio's historical risk-adjusted performance. 0.44 0.34 0.33 Upside Capture Ratio (%) Upside Capture Ratio (%) is a measure of a manager's performance in up markets relative to a particular benchmark. An up market is one in which the market's quarterly (or monthly) return is greater than or equal to zero. For example, a ratio of 50% means that the portfolio's value increased half as much as its benchmark index during up markets. 92.68 97.44 96.15 Downside Capture Ratio (%) Downside Capture Ratio (%) measures a manager's performance in down markets relative to a particular benchmark. A down market is one in which the market's quarterly (or monthly) return is less than zero. For example, a ratio of 50% means that the portfolio's value fell half as much as its benchmark index during down markets. 91.24 89.16 100.64 Beta Beta measures the relationship between the portfolio's excess return over T-bills (representing a risk-free rate) relative to the excess return of the portfolio's benchmark. A low beta does not imply that the portfolio has a low level of volatility; rather, a low beta means that the portfolio's market-related risk is low. Beta is often referred to as systematic risk. 0.90 0.92 0.98 R-Squared R-Squared ranges from 0 to 100 and reflects the percentage of a portfolio's movements that are explained by movements in its benchmark index. A portfolio with an R-squared of 100 means that all movement is completely explained by benchmark index movement. Thus, a portfolio that invests only in S&P 500 stocks will have an R-squared very close to 100. Conversely, a low R-squared indicates that very little of the portfolio's movement is explained by benchmark movement. An R-squared measure of 35, for example, means that movements in its benchmark index can explain only 35% of the portfolio's movements. R-squared is used to ascertain the significance of a particular beta or alpha and generally a higher R-squared will indicate more useful alpha and beta figures. 95.40 94.13 92.21 Tracking Error (%) Tracking Error (%) , which is often referred to as the active risk of the portfolio, measures how closely a manager's returns track the returns of a benchmark index. Specifically, tracking error measures the standard deviation of the excess returns a portfolio generates compared to its benchmark. This gives an indication of the volatility of a portfolio versus its benchmark. If a manager tracks a benchmark closely, then tracking error will be low. If a manager tracks a benchmark perfectly, then tracking error will be zero. 4.33 5.14 5.74 Information Ratio Information Ratio s a ratio of portfolio returns above the returns of a benchmark (usually an index) to the volatility of those returns. The information ratio (IR) measures a portfolio manager's ability to generate excess returns relative to a benchmark, but also attempts to identify the consistency of the investor. This ratio will identify if a manager has beaten the benchmark by a lot in a few months or a little every month. The higher the IR, the more consistent a manager is, and consistency is an ideal trait. -0.13 0.39 -0.23 Treynor Ratio (%) Treynor Ratio (%) , which was developed by Jack Treynor, measures reward per unit of beta risk. It measures returns earned in excess of that which could have been earned on a less risk investment per each unit of market risk. The Treynor Ratio relates the difference between the portfolio return and the risk-free rate to the portfolio beta for a given time period. 8.79 7.36 6.96 Max Drawdown Max Drawdown is the maximum loss from a peak to a trough of a portfolio, before a new peak is attained. Maximum Drawdown is an indicator of downside risk over a specified time period. -17.46 -30.45 -30.45 As of: 10/31/2025 Market Cap Fund Russell 2500™ Growth Index Market Cap ($mm) 0 - 1,000 1.85% 5.04% Market Cap ($mm) 1,000 - 1,500 0.76% 3.23% Market Cap ($mm) 1,500 - 2,500 5.23% 10.28% Market Cap ($mm) 2,500 - 5,000 6.79% 24.52% Market Cap ($mm) 5,000 - 10,000 37.03% 27.50% Market Cap ($mm) 10,000 - 25,000 42.95% 23.31% Market Cap ($mm) 25,000 - 50,000 5.39% 6.12% Market Cap ($mm) 50,000 - 100,000 0.00% 0.00% Market Cap ($mm) 100,000 - 200,000 0.00% 0.00% Market Cap ($mm) 200,000 - 0.00% 0.00% Market Cap – NA 0.00% 0.00% As of: 09/30/2025 Valuation Characteristics Fund Russell 2500™ Growth Index P/E 0-10 3.47% 1.76% P/E 10-15 2.29% 3.88% P/E 15-20 9.49% 7.87% P/E 20-25 6.46% 7.32% P/E 25-Above 61.08% 53.70% P/E – NA 17.20% 25.47% As of: 09/30/2025 Growth Characteristics Fund Russell 2500™ Growth Index EPS Growth (Trailing 3-yr %) - Negative 27.64% 16.05% EPS Growth (Trailing 3-yr %) 0 - 5 6.17% 4.86% EPS Growth (Trailing 3-yr %) 5 - 10 0.85% 2.60% EPS Growth (Trailing 3-yr %) 10 - 15 6.48% 3.67% EPS Growth (Trailing 3-yr %) 15 - 20 8.80% 4.43% EPS Growth (Trailing 3-yr %) Above 20 24.85% 25.14% EPS Growth (Trailing 3-yr %) - NA 25.21% 43.25% As of: 09/30/2025 Read Important Investment Disclosures Portfolio & Holdings Portfolio & Holdings Top Holdings (Equity) As of: 09/30/2025 Sterling Infrastructure Inc 3.02% Insmed Inc 2.41% Comfort Systems USA Inc 2.38% Grand Canyon Education Inc 2.32% API Group Corp 144A 2.27% ITT Inc 2.27% Houlihan Lokey Inc, Class A 2.24% Evercore Inc, Class A 2.06% RBC Bearings Inc 2.04% Interface Inc, Class A 2.00% % in Top 10 Holdings 23.02% View Holding Details Holding Details AMG GW&K Small/Mid Cap Growth Fund (ACWIX) Top 10 Holdings (Equity) All Holdings 10 Best Performing Stocks 10 Worst Performing Stocks Fund Holdings 09/30/2025 Sterling Infrastructure Inc 3.02% Insmed Inc 2.41% Comfort Systems USA Inc 2.38% Grand Canyon Education Inc 2.32% API Group Corp 144A 2.27% ITT Inc 2.27% Houlihan Lokey Inc, Class A 2.24% Evercore Inc, Class A 2.06% RBC Bearings Inc 2.04% Interface Inc, Class A 2.00% % in Top 10 Holdings 23.02% As of: 09/30/2025 Download All Holdings (PDF) As of: 10/31/2025 Ticker Name Sector Asset Class Country Currency Par/Shares Price ($) Market Value ($) % of Fund INSM Insmed Inc Health Care S US USD 5,083 189.60 $963,737 2.47% APG API Group Corp 144A Industrials S US USD 24,930 36.82 $917,923 2.36% ITT ITT Inc Industrials S US USD 4,793 185.07 $887,041 2.28% MTSI MACOM Technology Solutions Holdings Inc Information Technology S US USD 5,927 148.13 $877,967 2.25% RBC RBC Bearings Inc Industrials S US USD 1,978 428.53 $847,632 2.18% BURL Burlington Stores Inc Consumer Discretionary S US USD 2,944 273.59 $805,449 2.07% FIX Comfort Systems USA Inc Industrials S US USD 808 965.58 $780,189 2.00% LOPE Grand Canyon Education Inc Consumer Discretionary S US USD 3,989 188.30 $751,129 1.93% STRL Sterling Infrastructure Inc Industrials S US USD 1,969 377.90 $744,085 1.91% JBL Jabil Inc Information Technology S US USD 3,357 220.89 $741,528 1.90% HLI Houlihan Lokey Inc, Class A Financials S US USD 4,126 179.08 $738,884 1.90% PCOR Procore Technologies Inc Information Technology S US USD 9,911 73.82 $731,630 1.88% CRDO Credo Technology Group Holding Ltd Information Technology S US USD 3,828 187.62 $718,209 1.84% EVR Evercore Inc, Class A Financials S US USD 2,307 294.56 $679,550 1.74% CHDN Churchill Downs Inc Consumer Discretionary S US USD 6,648 99.20 $659,482 1.69% TILE Interface Inc, Class A Industrials S US USD 26,034 24.90 $648,247 1.66% PFGC Performance Food Group Co Consumer Staples S US USD 6,133 96.74 $593,306 1.52% IONS Ionis Pharmaceuticals Inc Health Care S US USD 7,905 74.30 $587,342 1.51% TYL Tyler Technologies Inc Information Technology S US USD 1,224 476.26 $582,942 1.50% RGTI Rigetti Computing Inc Information Technology S US USD 12,900 44.27 $571,083 1.47% ENTG Entegris Inc Information Technology S US USD 6,219 91.57 $569,474 1.46% NTRA Natera Inc Health Care S US USD 2,830 198.93 $562,972 1.44% GMED Globus Medical Inc, Class A Health Care S US USD 9,224 60.39 $557,037 1.43% MANH Manhattan Associates Inc Information Technology S US USD 2,989 182.07 $544,207 1.40% RARE Ultragenyx Pharmaceutical Inc Health Care S US USD 15,154 34.60 $524,328 1.35% SEI Solaris Energy Infrastructure Inc, Class A Energy S US USD 9,829 53.23 $523,198 1.34% SITE SiteOne Landscape Supply Inc Industrials S US USD 4,002 129.77 $519,340 1.33% PHAT Phathom Pharmaceuticals Inc Health Care S US USD 38,268 13.55 $518,531 1.33% TXRH Texas Roadhouse Inc, Class A Consumer Discretionary S US USD 3,162 163.58 $517,240 1.33% AEIS Advanced Energy Industries Inc Information Technology S US USD 2,545 202.73 $515,948 1.32% NBIX Neurocrine Biosciences Inc Health Care S US USD 3,579 143.21 $512,549 1.32% FTAI FTAI Aviation Ltd Industrials S KY USD 2,933 172.90 $507,116 1.30% CRNX Crinetics Pharmaceuticals Inc Health Care S US USD 11,418 43.50 $496,683 1.27% LITE Lumentum Holdings Inc Information Technology S US USD 2,450 201.56 $493,822 1.27% CGNX Cognex Corp Information Technology S US USD 11,802 41.39 $488,485 1.25% MOG/A Moog Inc, Class A Industrials S US USD 2,361 204.85 $483,651 1.24% SAIL Sailpoint Inc Information Technology S US USD 22,248 21.68 $482,337 1.24% AIT Applied Industrial Technologies Inc Industrials S US USD 1,848 257.09 $475,102 1.22% CYTK Cytokinetics Inc Health Care S US USD 7,407 63.59 $471,011 1.21% NDSN Nordson Corp Industrials S US USD 2,030 231.95 $470,859 1.21% BBIO Bridgebio Pharma Inc Health Care S US USD 7,407 62.64 $463,974 1.19% HALO Halozyme Therapeutics Inc Health Care S US USD 6,968 65.19 $454,244 1.17% AGIO Agios Pharmaceuticals Inc Health Care S US USD 10,440 43.24 $451,426 1.16% POWL Powell Industries Inc Industrials S US USD 1,150 383.39 $440,899 1.13% MTDR Matador Resources Co, Class A Energy S US USD 11,162 39.46 $440,453 1.13% HQY HealthEquity Inc Health Care S US USD 4,645 94.58 $439,324 1.13% PCTY Paylocity Holding Corp Industrials S US USD 3,073 141.27 $434,123 1.11% MEDP Medpace Holdings Inc Health Care S US USD 740 584.91 $432,833 1.11% IEX IDEX Corp Industrials S US USD 2,451 171.46 $420,248 1.08% RPM RPM International Inc Materials S US USD 3,824 109.28 $417,887 1.07% EGP EastGroup Properties Inc Real Estate S US USD 2,309 174.53 $402,990 1.03% TTAN ServiceTitan Inc, Class A Information Technology S US USD 4,225 94.36 $398,671 1.02% AVAV Aerovironment Inc Industrials S US USD 1,069 369.91 $395,434 1.01% KNSL Kinsale Capital Group Inc Financials S US USD 978 399.47 $390,682 1.00% CCCS CCC Intelligent Solutions Holdings Inc Information Technology S US USD 44,684 8.72 $389,644 1.00% VCYT Veracyte Inc Health Care S US USD 10,618 36.08 $383,097 0.98% SBCF Seacoast Banking Corp of Florida Financials S US USD 12,625 30.30 $382,538 0.98% DSGX Descartes Systems Group Inc Information Technology S CA USD 4,324 88.21 $381,420 0.98% ABG Asbury Automotive Group Inc Consumer Discretionary S US USD 1,557 234.60 $365,272 0.94% ZBRA Zebra Technologies Corp, Class A Information Technology S US USD 1,281 269.25 $344,909 0.89% AVNT Avient Corp Materials S US USD 10,706 32.07 $343,341 0.88% CHE Chemed Corp Health Care S US USD 712 431.30 $307,086 0.79% RRC Range Resources Corp Energy S US USD 8,550 35.55 $303,953 0.78% AZTA Azenta Inc Health Care S US USD 9,949 30.20 $300,460 0.77% EXP Eagle Materials Inc Materials S US USD 1,406 212.32 $298,522 0.77% SUI Sun Communities Inc Real Estate S US USD 2,345 126.60 $296,877 0.76% POOL Pool Corp Consumer Discretionary S US USD 1,111 267.06 $296,704 0.76% ATR AptarGroup Inc Materials S US USD 2,460 116.01 $285,385 0.73% BIO Bio-Rad Laboratories Inc, Class A Health Care S US USD 891 319.55 $284,719 0.73% PNFP Pinnacle Financial Partners Inc Financials S US USD 3,185 85.21 $271,394 0.70% LKQ LKQ Corp Consumer Discretionary S US USD 8,425 31.96 $269,263 0.69% RLI RLI Corp Financials S US USD 4,348 58.96 $256,358 0.66% RVLV Revolve Group Inc, Class A Consumer Discretionary S US USD 11,481 22.12 $253,960 0.65% TREX Trex Co Inc Industrials S US USD 5,245 48.32 $253,438 0.65% KNX Knight-Swift Transportation Holdings Inc, Class A Industrials S US USD 4,929 45.12 $222,396 0.57% ALAB Astera Labs Inc Information Technology S US USD 1,094 186.68 $204,228 0.52% MKTX MarketAxess Holdings Inc Financials S US USD 1,252 160.06 $200,395 0.51% BFAM Bright Horizons Family Solutions Inc, Class A Consumer Discretionary S US USD 1,706 109.23 $186,346 0.48% ACHC Acadia Healthcare Co Inc Health Care S US USD 8,195 21.50 $176,193 0.45% GLOB Globant SA Information Technology S AR USD 2,280 61.58 $140,402 0.36% MTN Vail Resorts Inc Consumer Discretionary S US USD 851 148.33 $126,229 0.32% Cash & Equivalents Cash C US USD - - $391,213 1.00% Fund Holdings Sort order Avg. Weight Total Return Sterling Infrastructure Inc 1 2.58% 47.22% Comfort Systems USA Inc 2 2.02% 53.97% Insmed Inc 3 2.17% 43.09% Ionis Pharmaceuticals Inc 4 1.40% 65.58% Interface Inc, Class A 5 1.79% 38.34% Medpace Holdings Inc 6 1.04% 63.82% Cognex Corp 7 1.54% 43.00% Halozyme Therapeutics Inc 8 1.47% 40.98% Solaris Energy Infrastructure Inc, Class A 9 1.27% 41.66% Evercore Inc, Class A 10 2.00% 25.15% As of: 09/30/2025 The 10 Best and Worst Performing Stocks are determined based on the stock's contribution to the Fund’s return during the specified quarter. Fund Holdings Sort order Avg. Weight Total Return MACOM Technology Solutions Holdings Inc 20 2.08% -13.12% Tyler Technologies Inc 19 1.90% -11.75% Globant SA 18 0.47% -36.83% Ultragenyx Pharmaceutical Inc 17 1.22% -17.27% Paylocity Holding Corp 16 1.51% -12.10% Texas Roadhouse Inc, Class A 15 1.53% -11.10% MarketAxess Holdings Inc 14 0.69% -21.76% Kinsale Capital Group Inc 13 1.24% -12.10% AptarGroup Inc 12 0.99% -14.39% LKQ Corp 11 0.77% -16.93% As of: 09/30/2025 The 10 Best and Worst Performing Stocks are determined based on the stock's contribution to the Fund’s return during the specified quarter. Read Important Investment Disclosures Read Important Investment Disclosures Sector Allocation (Equity) As of: 09/30/2025 View Allocation Details Allocation Details AMG GW&K Small/Mid Cap Growth Fund (ACWIX) Sector Allocation (Equity) Investment Allocation Top 10 Industries Sector Sort Order Fund Russell 2500™ Growth Index Industrials 24.02% 20.68% Health Care 22.10% 20.57% Information Technology 22.03% 23.14% Consumer Discretionary 11.48% 13.06% Financials 8.54% 10.70% Materials 3.87% 2.41% Energy 3.73% 1.98% Real Estate 1.84% 1.95% Consumer Staples 1.69% 2.78% Cash & Other 0.70% 0.00% Communication Services 0.00% 2.32% Utilities 0.00% 0.40% As of: 09/30/2025 Investment Allocation 09/30/2025 Stocks 99.30% Bonds 0.00% Cash and Other 0.70% As of: 09/30/2025 Industry Fund Russell 2500™ Growth Index Biotechnology 13.28% 9.97% Software 9.82% 11.39% Construction & Engineering 7.67% 4.14% Machinery 6.59% 3.46% Electronic Equipment, Instruments & Components 5.75% 3.39% Semiconductors & Semiconductor Equipment 5.06% 5.29% Capital Markets 4.88% 3.07% Trading Companies & Distributors 3.94% 1.73% Specialty Retail 3.64% 1.79% Hotels, Restaurants & Leisure 3.44% 5.00% % in Top 10 Industries 64.07% 49.23% As of: 09/30/2025 Read Important Investment Disclosures About the Affiliate About GW&K Investment Management GW&K Investment Management is a dynamic investment management firm that offers asset allocation, active equity, and fixed income investment solutions to help meet the needs of a diverse client base. GW&K’s founding principles of applying rigorous fundamental research, focusing on quality, and maintaining a long-term view still guide its investment process today. Learn More About GW&K Investment Management's Approach FOUNDED 1974 AMG AFFILIATE SINCE 2008 HEADQUARTERS Boston, MA Portfolio Managers Daniel L. Miller, CFA PARTNER AND DIRECTOR OF EQUITIES Read full bio Joseph C. Craigen, CFA PARTNER AND PORTFOLIO MANAGER Read full bio Investment Approach Investment Approach AMG GW&K Small/Mid Cap Growth Fund The Fund primarily invests in small and mid cap growth companies. The Fund identifies new investments based on five attributes: Company Management: The Fund seeks companies with experienced, tenured, high-quality management Growth Profile: The Fund favors companies with business models that have typically delivered consistent long-term growth Market Positioning: The Fund targets leading companies in attractive and defensible niche markets Financial Strength: The Fund invests in companies with strong financial characteristics Valuation: The Fund will seek attractive valuation relative to industry, peers, and own company history The Fund will ordinarily invest in approximately 55-85 stocks. GW&K intends for the Fund’s portfolio to be diversified as to companies and industries. Additional Fund Highlight Risk management parameters, including exposure limits for each company and diversification of sector and growth profiles, are embedded in the portfolio construction process. 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