GW&K Investment Management, LLC
In its 13F for Q2 2025 (holdings as of June 30, 2025, filed August 11, 2025), GW&K Investment Management, LLC reported 991 stock positions worth $11.2 billion. Its top holding was Macom Technology Solutions H (MTSI) at 1.6% of the portfolio, followed by RBC Bearings (RBC, 1.5%) and Broadcom (AVGO, 1.4%). Compared with Q1 2025, it opened 39 new positions, sold out of 58, added to 469 and reduced 340. The biggest buy was Jabil (JBL, shares +559872%) and the biggest sale Silicon Laboratories (SLAB, shares −100%).
- Most Recent 13F
- Q2 2026
- Location
- BOSTON, MA
- CIK
- 0001082917
- Portfolio Value
- $11.2B (Q2 2025)
- SEC Filing
- 0001082917-25-000004 ↗ filed Aug 11, 2025
Holdings Value
Holdings 991 stocks · $11.2B
| MTSI Macom Technology Solutions H | 1.57% | 1,223,997 | $175.4M | Reduce -4.0% |
| RBC RBC Bearings Inc. | 1.46% | 424,383 | $163.3M | Reduce -7.8% |
| AVGO Broadcom Inc. | 1.41% | 572,079 | $157.7M | Reduce -0.2% |
| MSFT Microsoft Corp. | 1.37% | 308,349 | $153.4M | Reduce -1.9% |
| TXRH Texas Roadhouse Inc. | 1.25% | 745,202 | $139.7M | Reduce -15.0% |
| LOPE Grand Canyon Education Inc. | 1.17% | 692,377 | $130.9M | Add +7.9% |
| INSM Insmed Inc. | 1.15% | 1,274,316 | $128.2M | Reduce -7.5% |
| CYBR Cyberark Software Ltd./Israel | 1.14% | 314,033 | $127.8M | Reduce -0.1% |
| APG Api Group Corp. | 1.12% | 2,444,752 | $124.8M | Reduce -7.3% |
| ITT Itt Inc. | 1.08% | 766,364 | $120.2M | Reduce -1.5% |
| PFGC Performance Food Group Co. | 1.07% | 1,365,019 | $119.4M | Add +0.3% |
| GTES Gates Industrial Corp. UK Ltd. | 1.02% | 4,951,118 | $114.0M | Reduce -2.9% |
| GMED Globus Medical Inc. Class A | 0.98% | 1,849,702 | $109.2M | Add +7.5% |
| FIX Comfort Systems USA Inc. | 0.97% | 203,065 | $108.9M | Add +15.2% |
| SF Stifel Financial Corp. | 0.96% | 1,032,702 | $107.2M | Reduce -3.3% |
| STRL Sterling Infrastructure Inc. | 0.81% | 394,145 | $90.9M | Reduce -21.2% |
| PIPR Piper Sandler Cos | 0.80% | 322,941 | $89.8M | Reduce -0.2% |
| KNSL Kinsale Capital Group Inc. | 0.73% | 168,625 | $81.6M | Add +1.1% |
| MEDP Medpace Holdings Inc. | 0.73% | 259,703 | $81.5M | Reduce -4.1% |
| NDSN Nordson Corp. | 0.72% | 376,236 | $80.7M | Add +24.1% |
| MTDR Matador Resources Co. | 0.72% | 1,685,938 | $80.5M | Reduce -3.8% |
| IDA Idacorp Inc. | 0.72% | 696,145 | $80.4M | Reduce -2.1% |
| PNFP Pinnacle Financial Partners | 0.72% | 726,814 | $80.2M | Reduce -4.2% |
| FSS Federal Signal Corp. | 0.71% | 743,036 | $79.1M | Add +36.5% |
| BJ Bj's Wholesale Club Holdings filed as BJS WHSL CLUB HLDGS INC | 0.69% | 717,457 | $77.4M | Reduce -19.3% |
| NBIX Neurocrine Biosciences Inc. | 0.69% | 612,365 | $77.0M | Add +19.8% |
| PM Philip Morris International | 0.67% | 410,865 | $74.8M | Reduce -2.3% |
| HALO Halozyme Therapeutics Inc. | 0.66% | 1,424,516 | $74.1M | Reduce -2.8% |
| ADC Agree Realty Corp. | 0.66% | 1,013,949 | $74.1M | Reduce -2.7% |
| GPI Group 1 Automotive Inc. | 0.65% | 167,538 | $73.2M | Reduce -3.5% |
| DORM Dorman Products Inc. | 0.65% | 596,444 | $73.2M | Reduce -0.8% |
| GTLS Chart Industries Inc. | 0.65% | 441,588 | $72.7M | Reduce -13.9% |
| VOYA Voya Financial Inc. | 0.65% | 1,021,739 | $72.5M | Add +1.1% |
| NTRA Natera Inc. | 0.65% | 428,509 | $72.4M | Add +28.8% |
| CVCO Cavco Industries Inc. | 0.64% | 165,526 | $71.9M | Reduce -13.0% |
| SITE Siteone Landscape Supply Inc. | 0.64% | 591,219 | $71.5M | Add +3.4% |
| ABBV Abbvie Inc. | 0.63% | 381,985 | $70.9M | Reduce -3.7% |
| BURL Burlington Stores Inc. | 0.63% | 300,599 | $69.9M | Add +0.0% |
| BFAM Bright Horizons Family Solut | 0.62% | 564,528 | $69.8M | Add +1.1% |
| HLI Houlihan Lokey Inc. | 0.62% | 386,744 | $69.6M | Reduce -6.9% |
| PCTY Paylocity Holding Corp. | 0.62% | 383,915 | $69.6M | Add +1.0% |
| MGY Magnolia Oil & Gas Corp. Class A | 0.61% | 3,053,312 | $68.6M | Reduce -10.8% |
| RPM RPM International Inc. | 0.60% | 613,231 | $67.4M | Add +0.8% |
| IEX Idex Corp. | 0.59% | 376,881 | $66.2M | Add +2.7% |
| EXP Eagle Materials Inc. | 0.59% | 324,442 | $65.6M | Add +1.0% |
| SPXC SPX Technologies Inc. | 0.59% | 390,435 | $65.5M | Reduce -9.0% |
| UMBF Umb Financial Corp. | 0.58% | 619,232 | $65.1M | Reduce -3.3% |
| CCC CCC Intelligent Solutions Ho | 0.58% | 6,878,091 | $64.7M | Add +4.2% |
| JPM JPMorgan Chase & Co. | 0.58% | 222,648 | $64.5M | Add +11.7% |
| WTFC Wintrust Financial Corp. | 0.58% | 518,673 | $64.3M | Add +1.3% |
| CHDN Churchill Downs Inc. | 0.57% | 625,433 | $63.2M | Add +34.2% |
| TPH Tri Pointe Homes Inc. | 0.56% | 1,968,607 | $62.9M | Reduce -2.1% |
| AEIS Advanced Energy Industries | 0.55% | 461,885 | $61.2M | Add +53.7% |
| JBL Jabil Inc. | 0.55% | 279,986 | $61.1M | Add +559872.0% |
| VCEL Vericel Corp. | 0.54% | 1,414,549 | $60.2M | Reduce -1.3% |
| MANH Manhattan Associates Inc. | 0.53% | 298,511 | $58.9M | Reduce -25.0% |
| ZBRA Zebra Technologies Corp. Class A | 0.52% | 189,809 | $58.5M | Add +0.7% |
| ESI Element Solutions Inc. | 0.52% | 2,584,022 | $58.5M | Add +1.1% |
| MZTI The Marzetti Company filed as LANCASTER COLONY CORP | 0.52% | 336,905 | $58.2M | Add +26.6% |
| SAIL Sailpoint Inc. | 0.52% | 2,528,713 | $57.8M | Add +2081.6% |
| PCOR Procore Technologies Inc. | 0.51% | 836,227 | $57.2M | Add +0.6% |
| ORI Old Republic Intl Corp. | 0.51% | 1,468,086 | $56.4M | Add +2.2% |
| NVDA Nvidia Corp. | 0.50% | 351,252 | $55.5M | Reduce -1.3% |
| CBZ Cbiz Inc. | 0.49% | 769,560 | $55.2M | Reduce -13.9% |
| DSGX The Descartes Systems Grp | 0.49% | 542,917 | $55.2M | Reduce -7.3% |
| SUI Sun Communities Inc. filed as SUN CMNTYS INC | 0.49% | 431,121 | $54.5M | Add +0.9% |
| TNDM Tandem Diabetes Care Inc. | 0.48% | 2,890,130 | $53.9M | Add +0.9% |
| GBCI Glacier Bancorp Inc. | 0.48% | 1,245,267 | $53.6M | Add +6.0% |
| ITGR Integer Holdings Corp. | 0.48% | 433,471 | $53.3M | Add +0.6% |
| BR Broadridge Financial Solutio | 0.48% | 218,499 | $53.1M | Reduce -2.0% |
| CGNX Cognex Corp. | 0.48% | 1,674,085 | $53.1M | Add +2.1% |
| HQY Healthequity Inc. | 0.47% | 498,898 | $52.3M | Reduce -15.2% |
| EGP Eastgroup Properties Inc. | 0.47% | 310,855 | $52.0M | Add +1.1% |
| INTA Intapp Inc. | 0.45% | 972,591 | $50.2M | Reduce -8.9% |
| JAZZ Jazz Pharmaceuticals PLC | 0.45% | 472,561 | $50.1M | Add +0.4% |
| LIN Linde PLC | 0.45% | 106,769 | $50.1M | Add +34.3% |
| WSO Watsco Inc. | 0.45% | 112,780 | $49.8M | Reduce -1.7% |
| ENTG Entegris Inc. | 0.44% | 611,907 | $49.4M | Reduce -18.2% |
| ETR Entergy Corp. | 0.44% | 589,374 | $49.0M | Reduce -1.7% |
| AUB Atlantic Union Bankshares Co. | 0.43% | 1,552,258 | $48.6M | Add +1.2% |
| AIT Applied Industrial Tech Inc. | 0.43% | 205,300 | $47.7M | Add +157.8% |
| ABCB Ameris Bancorp | 0.42% | 732,192 | $47.4M | Reduce -8.2% |
| ENB Enbridge Inc. | 0.42% | 1,032,305 | $46.8M | Add +10.4% |
| ABT Abbott Laboratories | 0.42% | 341,261 | $46.4M | Reduce -1.9% |
| SNDR Schneider National Inc. Class B | 0.42% | 1,921,052 | $46.4M | Reduce -1.8% |
| LECO Lincoln Electric Holdings | 0.41% | 223,630 | $46.4M | Add +1.1% |
| STAG Stag Industrial Inc. | 0.41% | 1,268,600 | $46.0M | Reduce -8.9% |
| ATR Aptargroup Inc. | 0.41% | 292,697 | $45.8M | Add +1.0% |
| POOL Pool Corp. | 0.41% | 156,548 | $45.6M | Add +488.1% |
| PAYX Paychex Inc. | 0.41% | 312,638 | $45.5M | Reduce -9.3% |
| CFR Cullen/Frost Bankers Inc. | 0.41% | 353,741 | $45.5M | Add +0.9% |
| VNOM Viper Energy Inc. | 0.39% | 1,138,914 | $43.4M | Add +6.2% |
| AIZ Assurant Inc. | 0.39% | 218,853 | $43.2M | Add +1.0% |
| MS Morgan Stanley | 0.38% | 305,288 | $43.0M | Reduce -1.9% |
| CFG Citizens Financial Group | 0.38% | 950,200 | $42.5M | Add +30.7% |
| STE Steris PLC | 0.38% | 176,981 | $42.5M | Reduce -2.0% |
| FERG Ferguson Enterprises Inc. | 0.38% | 194,893 | $42.4M | Reduce -1.6% |
| BLK BlackRock Inc. | 0.38% | 40,324 | $42.3M | Reduce -1.9% |
| SLGN Silgan Holdings Inc. | 0.38% | 779,397 | $42.2M | Reduce -7.9% |
| AMZN Amazon.com Inc. | 0.37% | 190,724 | $41.8M | Reduce -1.5% |
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 Q1 2025 → Q2 2025
| SLAB Silicon Laboratories Inc. | Reduce -99.7% | 0.00% | −0.70 |
| SWTX Springworks Therapeutics Inc. | Reduce -99.5% | 0.00% | −0.35 |
| TTC Toro Co. | Reduce -83.0% | 0.06% | −0.32 |
| HXL Hexcel Corp. | Reduce -99.7% | 0.00% | −0.32 |
| CVCO Cavco Industries Inc. | Reduce -13.0% | 0.64% | −0.27 |
| NSA National Storage Affiliates | Reduce -91.3% | 0.02% | −0.26 |
| CODI Compass Diversified Holdings | Reduce -99.6% | 0.00% | −0.26 |
| PR Permian Resources Corp. Class A | Reduce -42.8% | 0.30% | −0.25 |
| BJ Bj's Wholesale Club Holdings | Reduce -19.3% | 0.69% | −0.25 |
| CHX Championx Corp. | Reduce -100.0% | 0.00% | −0.23 |
| MTN Vail Resorts Inc. | Reduce -87.3% | 0.03% | −0.21 |
| HALO Halozyme Therapeutics Inc. | Reduce -2.8% | 0.66% | −0.20 |
| UNH Unitedhealth Group Inc. | Reduce -90.1% | 0.01% | −0.19 |
| TXN Texas Instruments Inc. | Reduce -98.6% | 0.00% | −0.19 |
| CPAY Corpay Inc. | Reduce -97.2% | 0.01% | −0.19 |
| MGY Magnolia Oil & Gas Corp. Class A | Reduce -10.8% | 0.61% | −0.19 |
| FLYW Flywire Corp.-Voting | Sold out | 0.00% | −0.19 |
| ITCI Intra-Cellular Therapies Inc. | Sold out | 0.00% | −0.17 |
| OVV Ovintiv Inc. | Reduce -26.9% | 0.28% | −0.17 |
| GLOB Globant SA | Reduce -21.6% | 0.23% | −0.16 |
| ENTG Entegris Inc. | Reduce -18.2% | 0.44% | −0.16 |
| ABBV Abbvie Inc. | Reduce -3.7% | 0.63% | −0.14 |
| CBZ Cbiz Inc. | Reduce -13.9% | 0.49% | −0.13 |
| DCI Donaldson Co. Inc. | Sold out | 0.00% | −0.13 |
| INTA Intapp Inc. | Reduce -8.9% | 0.45% | −0.13 |
| SAIA Saia Inc. | Reduce -93.8% | 0.01% | −0.12 |
| DAVA Endava PLC- Spon ADR | Reduce -99.8% | 0.00% | −0.12 |
| CTS CTS Corp. | Sold out | 0.00% | −0.12 |
| BAH Booz Allen Hamilton Holdings | Reduce -28.1% | 0.26% | −0.12 |
| MANH Manhattan Associates Inc. | Reduce -25.0% | 0.53% | −0.11 |
| MTDR Matador Resources Co. | Reduce -3.8% | 0.72% | −0.11 |
| TXRH Texas Roadhouse Inc. | Reduce -15.0% | 1.25% | −0.10 |
| ICUI Icu Medical Inc. | Reduce -99.3% | 0.00% | −0.10 |
| AVNT Avient Corp. | Reduce -7.7% | 0.34% | −0.10 |
| IWM iShares Russell 2000 ETF | Reduce -51.7% | 0.10% | −0.10 |
| WSO Watsco Inc. | Reduce -1.7% | 0.45% | −0.09 |
| NSSC Napco Security Technologies | Reduce -93.1% | 0.01% | −0.09 |
| PAYX Paychex Inc. | Reduce -9.3% | 0.41% | −0.09 |
| ADC Agree Realty Corp. | Reduce -2.7% | 0.66% | −0.08 |
| IRT Independence Realty Trust Inc. | Reduce -8.6% | 0.22% | −0.08 |
| OXM Oxford Industries Inc. | Reduce -10.0% | 0.11% | −0.07 |
| PPBI Pacific Premier Bancorp Inc. | Reduce -32.9% | 0.13% | −0.07 |
| ORLY O'reilly Automotive Inc. | Reduce -32.7% | 0.11% | −0.07 |
| KD Kyndryl Holdings Inc. | Reduce -48.7% | 0.14% | −0.07 |
| AZTA Azenta Inc. | Reduce -3.0% | 0.34% | −0.07 |
| UFPI Ufp Industries Inc. | Reduce -7.9% | 0.32% | −0.07 |
| GIC Global Industrial Co. | Sold out | 0.00% | −0.06 |
| EPAC Enerpac Tool Group Corp. | Reduce -8.9% | 0.25% | −0.06 |
| VIAV Viavi Solutions Inc. | Reduce -5.9% | 0.29% | −0.06 |
| HLMN Hillman Solutions Corp. | Reduce -1.4% | 0.22% | −0.06 |
Portfolio Buys Q1 2025 → Q2 2025
| JBL Jabil Inc. | Add +559872.0% | 0.55% | +0.55 |
| SAIL Sailpoint Inc. | Add +2081.6% | 0.52% | +0.50 |
| FIX Comfort Systems USA Inc. | Add +15.2% | 0.97% | +0.45 |
| FSS Federal Signal Corp. | Add +36.5% | 0.71% | +0.34 |
| POOL Pool Corp. | Add +488.1% | 0.41% | +0.33 |
| ALLE Allegion PLC | Add +2009983.3% | 0.31% | +0.31 |
| AEIS Advanced Energy Industries | Add +53.7% | 0.55% | +0.28 |
| AR Antero Resources Corp. | New | 0.27% | +0.27 |
| TTAN Servicetitan Inc. Class A | New | 0.27% | +0.27 |
| AIT Applied Industrial Tech Inc. | Add +157.8% | 0.43% | +0.26 |
| ALKT Alkami Technology Inc. | Add +442.6% | 0.30% | +0.25 |
| NTRA Natera Inc. | Add +28.8% | 0.65% | +0.21 |
| PWR Quanta Services Inc. | Add +74816.2% | 0.19% | +0.19 |
| GPOR Gulfport Energy Corp. | New | 0.18% | +0.18 |
| SEI Solaris Energy Infrastructur | Add +141.4% | 0.27% | +0.18 |
| CRS Carpenter Technology | New | 0.17% | +0.17 |
| NBIX Neurocrine Biosciences Inc. | Add +19.8% | 0.69% | +0.17 |
| NDSN Nordson Corp. | Add +24.1% | 0.72% | +0.16 |
| LOPE Grand Canyon Education Inc. | Add +7.9% | 1.17% | +0.14 |
| NEO Neogenomics Inc. | Add +977.2% | 0.16% | +0.14 |
| OWL Blue Owl Capital Inc. | New | 0.14% | +0.14 |
| FRPT Freshpet Inc. | Add +671.1% | 0.15% | +0.13 |
| JPM JPMorgan Chase & Co. | Add +11.7% | 0.58% | +0.12 |
| META Meta Platforms Inc. Class A | Add +101.4% | 0.20% | +0.12 |
| IONS Ionis Pharmaceuticals Inc. | Add +146.2% | 0.16% | +0.11 |
| LIN Linde PLC | Add +34.3% | 0.45% | +0.11 |
| CFG Citizens Financial Group | Add +30.7% | 0.38% | +0.10 |
| RTX RTX Corp. | Add +27.5% | 0.37% | +0.10 |
| SBCF Seacoast Banking Corp. | Add +31.4% | 0.35% | +0.09 |
| MZTI The Marzetti Company | Add +26.6% | 0.52% | +0.09 |
| CHDN Churchill Downs Inc. | Add +34.2% | 0.57% | +0.09 |
| POWL Powell Industries Inc. | Add +10.6% | 0.34% | +0.08 |
| PFGC Performance Food Group Co. | Add +0.3% | 1.07% | +0.08 |
| RRC Range Resources Corp. | Add +107027.5% | 0.08% | +0.08 |
| DCO Ducommun Inc. | Add +5.3% | 0.24% | +0.07 |
| USPH U.S. Physical Therapy Inc. | Add +22.0% | 0.29% | +0.06 |
| MCHB Mechanics Bancorp Class A | New | 0.05% | +0.05 |
| FAST Fastenal Co. | Add +13.0% | 0.35% | +0.05 |
| NOW ServiceNow Inc. | Add +10.0% | 0.19% | +0.05 |
| CDRE Cadre Holdings Inc. | Add +16.8% | 0.26% | +0.05 |
| SKWD Skyward Specialty Insurance | New | 0.05% | +0.05 |
| LITE Lumentum Holdings Inc. | New | 0.04% | +0.04 |
| BRBR Bellring Brands Inc. | New | 0.04% | +0.04 |
| WTFC Wintrust Financial Corp. | Add +1.3% | 0.58% | +0.04 |
| ACHC Acadia Healthcare Co. Inc. | Add +58.9% | 0.32% | +0.04 |
| AGIO Agios Pharmaceuticals Inc. | Add +6.3% | 0.26% | +0.04 |
| IVV iShares Core S&P 500 ETF | Add +52.8% | 0.09% | +0.04 |
| ENB Enbridge Inc. | Add +10.4% | 0.42% | +0.03 |
| ZBRA Zebra Technologies Corp. Class A | Add +0.7% | 0.52% | +0.03 |
| LECO Lincoln Electric Holdings | Add +1.1% | 0.41% | +0.03 |
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 |