GW&K Investment Management, LLC
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 11, 2026), GW&K Investment Management, LLC reported 996 stock positions worth $11.6 billion. Its top holding was Macom Technology Solutions H (MTSI) at 1.8% of the portfolio, followed by RBC Bearings (RBC, 1.4%) and Itt (ITT, 1.3%). Compared with Q3 2025, it opened 28 new positions, sold out of 34, added to 443 and reduced 326. The biggest buy was Macom Technology Solutions H (MTSI, shares +6%) and the biggest sale Zebra Technologies Class A (ZBRA, shares −99%).
- Most Recent 13F
- Q2 2026
- Location
- BOSTON, MA
- CIK
- 0001082917
- Portfolio Value
- $11.6B (Q4 2025)
- SEC Filing
- 0001082917-26-000001 ↗ filed Feb 11, 2026
Holdings Value
Holdings 996 stocks · $11.6B
| MTSI Macom Technology Solutions H | 1.80% | 1,217,935 | $208.6M | Add +6.1% |
| RBC RBC Bearings Inc. | 1.41% | 364,336 | $163.4M | Reduce -7.6% |
| ITT Itt Inc. | 1.29% | 860,687 | $149.3M | Add +16.5% |
| MSFT Microsoft Corp. | 1.26% | 300,944 | $145.5M | Reduce -0.6% |
| AEIS Advanced Energy Industries | 1.23% | 681,560 | $142.7M | Reduce -2.6% |
| AVGO Broadcom Inc. | 1.18% | 395,569 | $136.9M | Reduce -0.8% |
| GMED Globus Medical Inc. Class A | 1.14% | 1,516,345 | $132.4M | Reduce -14.7% |
| LOPE Grand Canyon Education Inc. | 1.06% | 736,524 | $122.5M | Add +15.6% |
| APG Api Group Corp. | 1.05% | 3,172,670 | $121.4M | Reduce -3.0% |
| SF Stifel Financial Corp. | 0.97% | 897,401 | $112.4M | Reduce -4.6% |
| TXRH Texas Roadhouse Inc. | 0.94% | 652,667 | $108.3M | Reduce -9.4% |
| SPXC SPX Technologies Inc. | 0.91% | 524,251 | $104.9M | Reduce -4.8% |
| FIX Comfort Systems USA Inc. | 0.90% | 111,647 | $104.2M | Reduce -36.1% |
| PIPR Piper Sandler Cos | 0.87% | 296,342 | $100.7M | Reduce -4.1% |
| BURL Burlington Stores Inc. | 0.85% | 341,034 | $98.5M | Add +14.6% |
| GTES Gates Industrial Corp. UK Ltd. | 0.84% | 4,534,381 | $97.4M | Add +0.7% |
| STRL Sterling Infrastructure Inc. | 0.83% | 311,855 | $95.5M | Add +16.3% |
| IDA Idacorp Inc. | 0.78% | 716,975 | $90.7M | Add +7.0% |
| CVCO Cavco Industries Inc. | 0.77% | 151,149 | $89.3M | Reduce -4.7% |
| MEDP Medpace Holdings Inc. | 0.76% | 156,198 | $87.7M | Reduce -21.2% |
| NOVT Novanta Inc. | 0.76% | 736,954 | $87.7M | Add +187.3% |
| PFGC Performance Food Group Co. | 0.76% | 973,826 | $87.6M | Reduce -2.3% |
| ABBV Abbvie Inc. | 0.74% | 374,931 | $85.7M | Reduce -0.2% |
| HALO Halozyme Therapeutics Inc. | 0.73% | 1,254,648 | $84.4M | Reduce -0.6% |
| NDSN Nordson Corp. | 0.73% | 350,198 | $84.2M | Reduce -3.1% |
| INSM Insmed Inc. | 0.73% | 482,670 | $84.0M | Reduce -19.8% |
| JBL Jabil Inc. | 0.73% | 367,874 | $83.9M | Reduce -0.8% |
| UMBF Umb Financial Corp. | 0.71% | 718,277 | $82.6M | Reduce -3.3% |
| MOG.A Moog Inc. Class A | 0.71% | 336,673 | $82.0M | Add +12.7% |
| NBIX Neurocrine Biosciences Inc. | 0.71% | 576,648 | $81.8M | Reduce -3.0% |
| POWL Powell Industries Inc. | 0.70% | 254,520 | $81.1M | Add +13.4% |
| CHDN Churchill Downs Inc. | 0.67% | 682,196 | $77.6M | Add +12.7% |
| PCOR Procore Technologies Inc. | 0.65% | 1,040,683 | $75.7M | Reduce -2.8% |
| JAZZ Jazz Pharmaceuticals PLC | 0.63% | 427,644 | $72.7M | Reduce -6.0% |
| JPM JPMorgan Chase & Co. | 0.61% | 217,527 | $70.1M | Reduce -0.3% |
| MGY Magnolia Oil & Gas Corp. Class A | 0.60% | 3,169,496 | $69.4M | Add +14.6% |
| VOYA Voya Financial Inc. | 0.60% | 924,179 | $68.8M | Reduce -5.6% |
| BJ Bj's Wholesale Club Holdings filed as BJS WHSL CLUB HLDGS INC | 0.59% | 763,595 | $68.7M | Reduce -7.2% |
| CRNX Crinetics Pharmaceuticals Inc. | 0.59% | 1,476,325 | $68.7M | Add +73.6% |
| MTDR Matador Resources Co. | 0.58% | 1,571,528 | $66.7M | Add +0.3% |
| ADC Agree Realty Corp. | 0.56% | 906,544 | $65.3M | Reduce -7.3% |
| DORM Dorman Products Inc. | 0.56% | 529,644 | $65.2M | Reduce -3.6% |
| SAIL Sailpoint Inc. | 0.56% | 3,218,056 | $65.1M | Reduce -5.2% |
| PM Philip Morris International | 0.56% | 403,756 | $64.8M | Reduce -0.8% |
| SITE Siteone Landscape Supply Inc. | 0.55% | 510,506 | $63.6M | Reduce -2.8% |
| NVDA Nvidia Corp. | 0.55% | 338,219 | $63.1M | Reduce -0.6% |
| ENTG Entegris Inc. | 0.54% | 747,869 | $63.0M | Reduce -2.7% |
| AIZ Assurant Inc. | 0.54% | 259,456 | $62.5M | Reduce -5.6% |
| CFG Citizens Financial Group | 0.54% | 1,067,077 | $62.3M | Add +13.4% |
| IONS Ionis Pharmaceuticals Inc. | 0.54% | 786,668 | $62.2M | Add +198.0% |
| HLI Houlihan Lokey Inc. | 0.54% | 356,255 | $62.1M | Add +4.0% |
| EXP Eagle Materials Inc. | 0.54% | 299,567 | $61.9M | Reduce -4.1% |
| FSS Federal Signal Corp. | 0.53% | 564,662 | $61.3M | Reduce -4.8% |
| FTAI Ftai Aviation Ltd. | 0.53% | 311,219 | $61.3M | Add +5.9% |
| THR Thermon Group Holdings Inc. | 0.52% | 1,627,257 | $60.5M | Add +13.8% |
| ESI Element Solutions Inc. | 0.52% | 2,391,577 | $59.8M | Reduce -3.4% |
| KNSL Kinsale Capital Group Inc. | 0.52% | 152,487 | $59.6M | Reduce -6.2% |
| TPH Tri Pointe Homes Inc. | 0.51% | 1,881,737 | $59.2M | Reduce -4.5% |
| TNDM Tandem Diabetes Care Inc. | 0.51% | 2,675,157 | $58.8M | Reduce -1.7% |
| GBCI Glacier Bancorp Inc. | 0.51% | 1,332,461 | $58.7M | Add +15.8% |
| RPM RPM International Inc. | 0.51% | 562,729 | $58.5M | Reduce -4.9% |
| CRDO Credo Technology Group Holdi | 0.50% | 401,678 | $57.8M | Add +99.7% |
| WTFC Wintrust Financial Corp. | 0.50% | 411,213 | $57.5M | Reduce -17.2% |
| VCEL Vericel Corp. | 0.49% | 1,580,967 | $56.9M | Add +22.5% |
| AUB Atlantic Union Bankshares Co. | 0.49% | 1,609,015 | $56.8M | Reduce -5.0% |
| NTRA Natera Inc. | 0.48% | 243,967 | $55.9M | Reduce -41.0% |
| KWR Quaker Chemical Corporation | 0.48% | 406,329 | $55.8M | Add +42.3% |
| AIT Applied Industrial Tech Inc. | 0.48% | 216,509 | $55.6M | Add +2.5% |
| CGNX Cognex Corp. | 0.47% | 1,522,767 | $54.8M | Reduce -6.1% |
| AVAV Aerovironment Inc. | 0.46% | 222,055 | $53.7M | Add +289.9% |
| SUPN Supernus Pharmaceuticals Inc. | 0.46% | 1,080,716 | $53.7M | Add +0.0% |
| ORI Old Republic Intl Corp. | 0.46% | 1,175,900 | $53.7M | Reduce -15.5% |
| BIO Bio-Rad Laboratories-A | 0.46% | 177,083 | $53.7M | Reduce -3.7% |
| GPI Group 1 Automotive Inc. | 0.46% | 136,074 | $53.5M | Reduce -15.3% |
| ETR Entergy Corp. | 0.46% | 577,946 | $53.4M | Reduce -0.6% |
| PCTY Paylocity Holding Corp. | 0.46% | 348,909 | $53.2M | Reduce -5.7% |
| MS Morgan Stanley | 0.46% | 298,881 | $53.1M | Reduce -0.4% |
| BFAM Bright Horizons Family Solut | 0.45% | 514,153 | $52.1M | Reduce -5.2% |
| AZTA Azenta Inc. | 0.45% | 1,550,101 | $51.6M | Add +37.1% |
| RTX RTX Corp. | 0.45% | 280,689 | $51.5M | Reduce -0.5% |
| EGP Eastgroup Properties Inc. | 0.44% | 287,705 | $51.3M | Reduce -4.1% |
| LECO Lincoln Electric Holdings | 0.43% | 207,714 | $49.8M | Reduce -3.2% |
| SEI Solaris Energy Infrastructur | 0.43% | 1,082,458 | $49.8M | Reduce -8.1% |
| SUI Sun Communities Inc. filed as SUN CMNTYS INC | 0.43% | 398,019 | $49.3M | Reduce -4.2% |
| GOOGL Alphabet Inc. Class A | 0.42% | 156,822 | $49.1M | Reduce -4.8% |
| ENB Enbridge Inc. | 0.42% | 1,018,513 | $48.7M | Reduce -0.4% |
| CFR Cullen/Frost Bankers Inc. | 0.42% | 383,363 | $48.5M | Reduce -4.2% |
| VCYT Veracyte Inc. | 0.41% | 1,140,083 | $48.0M | Reduce -11.2% |
| BBIO Bridgebio Pharma Inc. | 0.41% | 626,122 | $47.9M | Add +4.7% |
| BR Broadridge Financial Solutio | 0.41% | 214,136 | $47.8M | Reduce -0.7% |
| CSW CSW Industrials Inc. | 0.40% | 159,197 | $46.7M | New |
| SNDR Schneider National Inc. Class B | 0.40% | 1,749,677 | $46.4M | Reduce -0.7% |
| SBCF Seacoast Banking Corp. | 0.40% | 1,467,500 | $46.1M | Reduce -1.4% |
| LEVI Levi Strauss & Co. Class A | 0.40% | 2,219,599 | $46.0M | Add +31.5% |
| VIAV Viavi Solutions Inc. | 0.39% | 2,553,789 | $45.5M | Reduce -9.6% |
| CNQ Canadian Natural Resources | 0.38% | 1,309,506 | $44.3M | Reduce -0.5% |
| PNFP Pinnacle Financial Partners | 0.38% | 451,459 | $44.2M | Add +0.1% |
| CSCO Cisco Systems Inc. | 0.38% | 572,523 | $44.1M | Reduce -0.9% |
| STE Steris PLC | 0.38% | 173,791 | $44.1M | Reduce -0.6% |
| INTA Intapp Inc. | 0.38% | 953,688 | $43.7M | Reduce -13.1% |
Other holdings (1): bonds, preferreds, convertibles and warrants · $0 (not counted above)
| Security | Class | Shares / Principal | Value | Change |
|---|---|---|---|---|
| OXY.WS Occidental Petroleum-CW27 | *W EXP 08/03/202 | 1 | $0 | No change |
Portfolio Sells Q3 2025 → Q4 2025
| ZBRA Zebra Technologies Corp. Class A | Reduce -99.2% | 0.00% | −0.48 |
| CCC CCC Intelligent Solutions Ho | Reduce -83.8% | 0.07% | −0.46 |
| HOLX Hologic Inc. | Reduce -99.6% | 0.00% | −0.43 |
| FIX Comfort Systems USA Inc. | Reduce -36.1% | 0.90% | −0.38 |
| PRIM Primoris Services Corp. | Reduce -49.1% | 0.28% | −0.34 |
| ATR Aptargroup Inc. | Reduce -99.3% | 0.00% | −0.33 |
| CYBR Cyberark Software Ltd./Israel | Reduce -96.5% | 0.01% | −0.27 |
| PR Permian Resources Corp. Class A | Reduce -94.6% | 0.02% | −0.24 |
| EXPO Exponent Inc. | Reduce -98.8% | 0.00% | −0.20 |
| DORM Dorman Products Inc. | Reduce -3.6% | 0.56% | −0.19 |
| CGNX Cognex Corp. | Reduce -6.1% | 0.47% | −0.18 |
| PFGC Performance Food Group Co. | Reduce -2.3% | 0.76% | −0.16 |
| GPI Group 1 Automotive Inc. | Reduce -15.3% | 0.46% | −0.16 |
| MEDP Medpace Holdings Inc. | Reduce -21.2% | 0.76% | −0.14 |
| POOL Pool Corp. | Reduce -7.8% | 0.28% | −0.14 |
| FNF Fidelity National Financial | Reduce -42.6% | 0.14% | −0.14 |
| MSFT Microsoft Corp. | Reduce -0.6% | 1.26% | −0.13 |
| TXRH Texas Roadhouse Inc. | Reduce -9.4% | 0.94% | −0.12 |
| FRPT Freshpet Inc. | Sold out | 0.00% | −0.11 |
| RPM RPM International Inc. | Reduce -4.9% | 0.51% | −0.11 |
| EXP Eagle Materials Inc. | Reduce -4.1% | 0.54% | −0.11 |
| NTRA Natera Inc. | Reduce -41.0% | 0.48% | −0.11 |
| SAIL Sailpoint Inc. | Reduce -5.2% | 0.56% | −0.10 |
| SLGN Silgan Holdings Inc. | Reduce -28.6% | 0.19% | −0.10 |
| RGTI Rigetti Computing Inc. | Sold out | 0.00% | −0.10 |
| KNSL Kinsale Capital Group Inc. | Reduce -6.2% | 0.52% | −0.10 |
| UFPI Ufp Industries Inc. | Reduce -32.9% | 0.17% | −0.09 |
| FSS Federal Signal Corp. | Reduce -4.8% | 0.53% | −0.09 |
| HALO Halozyme Therapeutics Inc. | Reduce -0.6% | 0.73% | −0.09 |
| WTFC Wintrust Financial Corp. | Reduce -17.2% | 0.50% | −0.09 |
| LIN Linde PLC | Reduce -7.8% | 0.36% | −0.08 |
| BJ Bj's Wholesale Club Holdings | Reduce -7.2% | 0.59% | −0.08 |
| ENTG Entegris Inc. | Reduce -2.7% | 0.54% | −0.08 |
| MANH Manhattan Associates Inc. | Reduce -2.4% | 0.35% | −0.08 |
| FAST Fastenal Co. | Reduce -0.4% | 0.32% | −0.08 |
| TPH Tri Pointe Homes Inc. | Reduce -4.5% | 0.51% | −0.08 |
| PIPR Piper Sandler Cos | Reduce -4.1% | 0.87% | −0.08 |
| IPAR Interparfums Inc. | Sold out | 0.00% | −0.08 |
| DSGX The Descartes Systems Grp | Reduce -11.2% | 0.33% | −0.08 |
| MTX Minerals Technologies Inc. | Reduce -27.9% | 0.17% | −0.08 |
| WSO Watsco Inc. | Reduce -0.9% | 0.32% | −0.08 |
| ABCB Ameris Bancorp | Reduce -15.7% | 0.36% | −0.07 |
| BFAM Bright Horizons Family Solut | Reduce -5.2% | 0.45% | −0.07 |
| HMN Horace Mann Educators | Reduce -21.0% | 0.26% | −0.07 |
| HD Home Depot Inc. | Reduce -0.3% | 0.32% | −0.07 |
| IP International Paper Co. | Reduce -8.7% | 0.20% | −0.07 |
| DOC Healthpeak Properties Inc. | Reduce -5.7% | 0.22% | −0.06 |
| UMBF Umb Financial Corp. | Reduce -3.3% | 0.71% | −0.06 |
| PCTY Paylocity Holding Corp. | Reduce -5.7% | 0.46% | −0.06 |
| ORI Old Republic Intl Corp. | Reduce -15.5% | 0.46% | −0.06 |
Portfolio Buys Q3 2025 → Q4 2025
| MTSI Macom Technology Solutions H | Add +6.1% | 1.80% | +0.54 |
| NOVT Novanta Inc. | Add +187.3% | 0.76% | +0.53 |
| CSW CSW Industrials Inc. | New | 0.40% | +0.40 |
| IONS Ionis Pharmaceuticals Inc. | Add +198.0% | 0.54% | +0.39 |
| VNOM Viper Energy Inc. Class A | New | 0.37% | +0.37 |
| AVAV Aerovironment Inc. | Add +289.9% | 0.46% | +0.31 |
| HLNE Hamilton Lane Inc. Class A | New | 0.29% | +0.29 |
| CRNX Crinetics Pharmaceuticals Inc. | Add +73.6% | 0.59% | +0.28 |
| CRDO Credo Technology Group Holdi | Add +99.7% | 0.50% | +0.24 |
| IWM iShares Russell 2000 ETF | Add +144.6% | 0.33% | +0.20 |
| THR Thermon Group Holdings Inc. | Add +13.8% | 0.52% | +0.18 |
| ITRN Ituran Location and Control | Add +909.3% | 0.20% | +0.18 |
| LGN Legence Corp. Class A | New | 0.18% | +0.18 |
| BURL Burlington Stores Inc. | Add +14.6% | 0.85% | +0.18 |
| CYTK Cytokinetics Inc. | Add +161.4% | 0.26% | +0.17 |
| MOG.A Moog Inc. Class A | Add +12.7% | 0.71% | +0.16 |
| AZTA Azenta Inc. | Add +37.1% | 0.45% | +0.16 |
| CHDN Churchill Downs Inc. | Add +12.7% | 0.67% | +0.15 |
| KWR Quaker Chemical Corporation | Add +42.3% | 0.48% | +0.15 |
| LGND Ligand Pharmaceuticals | Add +265.4% | 0.19% | +0.14 |
| FBK FB Financial Corp. | New | 0.14% | +0.14 |
| BBIO Bridgebio Pharma Inc. | Add +4.7% | 0.41% | +0.14 |
| VCEL Vericel Corp. | Add +22.5% | 0.49% | +0.13 |
| GNRC Generac Holdings Inc. | Add +115790.6% | 0.13% | +0.13 |
| CVSA Covista Inc. | New | 0.13% | +0.13 |
| ITT Itt Inc. | Add +16.5% | 1.29% | +0.12 |
| SKWD Skyward Specialty Insurance | Add +68.5% | 0.27% | +0.12 |
| SHAK Shake Shack Inc. Class A | New | 0.11% | +0.11 |
| WST West Pharmaceutical Services | Add +4696.4% | 0.10% | +0.10 |
| CFG Citizens Financial Group | Add +13.4% | 0.54% | +0.10 |
| POWL Powell Industries Inc. | Add +13.4% | 0.70% | +0.10 |
| FTAI Ftai Aviation Ltd. | Add +5.9% | 0.53% | +0.10 |
| NEO Neogenomics Inc. | Add +7.5% | 0.23% | +0.09 |
| PHAT Phathom Pharmaceuticals Inc. | Add +14.2% | 0.19% | +0.07 |
| WSR Whitestone REIT | Add +84.4% | 0.13% | +0.07 |
| RVLV Revolve Group Inc. Class A | Add +5.7% | 0.21% | +0.07 |
| BCRX Biocryst Pharmaceuticals Inc. | Add +43.8% | 0.21% | +0.07 |
| MRK Merck & Co. Inc. | Add +4.3% | 0.27% | +0.06 |
| ATRC Atricure Inc. | Add +10.6% | 0.33% | +0.06 |
| FICO Fair Isaac Corp. | Add +2833.8% | 0.06% | +0.06 |
| LEVI Levi Strauss & Co. Class A | Add +31.5% | 0.40% | +0.05 |
| MCHB Mechanics Bancorp Class A | Add +36.2% | 0.16% | +0.05 |
| EPAC Enerpac Tool Group Corp. | Add +34.4% | 0.26% | +0.05 |
| CRS Carpenter Technology | Add +1.5% | 0.21% | +0.04 |
| GPOR Gulfport Energy Corp. | Add +8.9% | 0.22% | +0.04 |
| CDRE Cadre Holdings Inc. | Add +6.3% | 0.29% | +0.04 |
| CRL Charles River Laboratories | Add +4.5% | 0.17% | +0.04 |
| ATMU Atmus Filtration Technologie | Add +7.6% | 0.22% | +0.04 |
| ALLY Ally Financial Inc. | Add +0.0% | 0.32% | +0.04 |
| WTM White Mountains Insurance GP | Add +7.6% | 0.15% | +0.04 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 1,107 | $12.8B | MTSI, AEIS, SPXC, STRL, ITT |
| Q1 2026 | 1,019 | $11.3B | AEIS, MTSI, RBC, ITT, SPXC |
| Q4 2025 | 996 | $11.6B | MTSI, RBC, ITT, MSFT, AEIS |
| Q3 2025 | 999 | $11.3B | MSFT, RBC, FIX, MTSI, LOPE |
| Q2 2025 | 991 | $11.2B | MTSI, RBC, AVGO, MSFT, TXRH |
| Q1 2025 | 1,010 | $10.8B | RBC, TXRH, MTSI, GMED, MSFT |
| Q4 2024 | 973 | $11.8B | TXRH, MTSI, CYBR, GMED, RBC |
| Q3 2024 | 960 | $11.7B | TXRH, RBC, MSFT, CYBR, MTSI |
| Q2 2024 | 942 | $10.9B | TXRH, MSFT, MTSI, RBC, CYBR |
| Q1 2024 | 927 | $11.3B | TXRH, MSFT, RBC, ENTG, MTDR |