13F Filings History of GW&K Investment Management, LLC

Latest 13F report
Q4 2025 - 11 Feb 2026
Value $
$11,564,691,000
Signature - Title
David Rouse - Chief Compliance Officer
Location
Boston, MA
Summary
This page shows a list of all the recent 13F filings made by GW&K Investment Management, LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. GW&K Investment Management, LLC reported 991 stock holdings with total value $11,564,691,000 as of Q4 2025. Top holdings included MTSI, RBC, ITT, MSFT, and AEIS.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 991 $11,564,691,000 +$918,397,212 -$859,965,161 +$58,432,051 MTSI, RBC, ITT, MSFT, AEIS 13F-HR 11 Feb 2026, 14:15
Q3 2025 993 $11,302,334,000 +$807,115,582 -$1,442,866,175 -$635,750,593 MSFT, RBC, FIX, MTSI, LOPE 13F-HR 12 Nov 2025, 15:50
Q2 2025 985 $11,171,931,000 +$824,274,003 -$1,008,077,146 -$183,803,143 MTSI, RBC, AVGO, MSFT, TXRH 13F-HR 11 Aug 2025, 12:00
Q1 2025 1,004 $10,794,980,000 +$568,006,249 -$759,435,687 -$191,429,438 RBC, TXRH, MTSI, GMED, MSFT 13F-HR 05 May 2025, 14:48
Q4 2024 968 $11,760,896,000 +$658,110,315 -$645,057,185 +$13,053,130 TXRH, MTSI, CYBR, GMED, RBC 13F-HR 05 Feb 2025, 10:43
Q3 2024 956 $11,684,911,000 +$852,355,298 -$815,088,761 +$37,266,537 TXRH, RBC, MSFT, CYBR, MTSI 13F-HR 07 Nov 2024, 10:55
Q2 2024 938 $10,942,525,000 +$618,457,240 -$541,807,794 +$76,649,446 TXRH, MSFT, MTSI, RBC, CYBR 13F-HR 12 Aug 2024, 09:07
Q1 2024 920 $11,344,196,000 +$592,395,016 -$778,517,209 -$186,122,193 TXRH, MSFT, RBC, ENTG, MTDR 13F-HR 08 May 2024, 11:01
Q4 2023 927 $10,724,403,000 +$589,070,706 -$983,768,751 -$394,698,045 RBC, MSFT, TXRH, LAD, BAH 13F-HR 09 Feb 2024, 13:55
Q3 2023 909 $9,953,314,000 +$460,228,490 -$588,517,622 -$128,289,132 RBC, MSFT, TXRH, MTDR, LAD 13F-HR 09 Nov 2023, 11:13
Q2 2023 897 $10,540,791,000 +$531,381,247 -$626,130,597 -$94,749,350 MSFT, TXRH, RBC, LAD, BAH 13F-HR 09 Aug 2023, 11:48
Q1 2023 458 $10,331,273,000 +$853,306,082 -$755,952,386 +$97,353,696 RBC, TXRH, MSFT, SLAB, FIVE 13F-HR 09 May 2023, 11:12
Q4 2022 452 $9,862,022,000 +$722,052,924 -$720,754,467 +$1,298,457 PFGC, RBC, FIVE, GMED, TXRH 13F-HR 10 Feb 2023, 13:39
Q3 2022 395 $9,062,290,000 +$794,760,970 -$600,081,082 +$194,679,888 RBC, PCTY, TXRH, MSFT, PFGC 13F-HR 09 Nov 2022, 11:35
Q2 2022 830 $9,270,188,000 +$502,479,499 -$850,593,529 -$348,114,030 RBC, MSFT, PFGC, LAD, RBA 13F-HR 09 Aug 2022, 13:48
Q1 2022 811 $11,193,897,000 +$836,973,923 -$604,429,749 +$232,544,174 RPD, RBC, MSFT, PFGC, LAD Restatement 09 May 2022, 16:10
Q4 2021 388 $11,965,167,000 +$959,721,801 -$853,549,873 +$106,171,928 RPD, SYNH, SLAB, RBC, PCTY 13F-HR 11 Feb 2022, 17:15
Q3 2021 374 $11,192,938,000 +$503,161,112 -$745,759,677 -$242,598,565 RPD, PCTY, RBC, SYNH, TXRH 13F-HR 10 Nov 2021, 11:21
Q2 2021 413 $11,495,053,000 +$574,737,149 -$400,922,655 +$173,814,494 SYNH, LAD, RPD, TXRH, RBC 13F-HR 10 Aug 2021, 13:22
Q1 2021 386 $10,856,650,000 +$1,158,736,729 -$648,689,749 +$510,046,980 LAD, TXRH, SYNH, RBC, BABA 13F-HR 11 May 2021, 13:50
Q4 2020 375 $9,500,769,000 +$1,120,768,057 -$662,462,837 +$458,305,220 LAD, RBA, RPD, BABA, SYNH 13F-HR 05 Feb 2021, 13:35
Q3 2020 392 $7,637,483,000 +$559,104,039 -$483,865,965 +$75,238,074 BABA, RBA, LAD, FIVE, STAG 13F-HR 10 Nov 2020, 16:08
Q2 2020 364 $7,118,260,000 +$691,092,666 -$577,168,739 +$113,923,927 BABA, HUBS, CTLT, SYNH, RBA 13F-HR 06 Aug 2020, 15:18
Q1 2020 374 $5,681,563,000 +$740,460,383 -$641,547,236 +$98,913,147 CTLT, BABA, ICUI, HUBS, NEE 13F-HR 11 May 2020, 16:39
Q4 2019 377 $7,491,828,000 +$344,202,522 -$520,358,121 -$176,155,599 CTLT, BABA, RBC, FIVE, PFGC 13F-HR 10 Feb 2020, 14:12
Q3 2019 371 $7,110,669,000 +$855,045,721 -$346,064,975 +$508,980,746 RBC, FIVE, CTLT, LOPE, LAD 13F-HR 05 Nov 2019, 15:09
Q2 2019 337 $6,590,137,000 +$495,140,750 -$375,525,074 +$119,615,676 ICUI, CTLT, LOPE, RBC, BABA 13F-HR 06 Aug 2019, 13:12
Q1 2019 303 $6,205,094,000 +$852,056,981 -$389,277,726 +$462,779,255 FIVE, ICUI, BABA, LOPE, CTLT 13F-HR 14 May 2019, 10:29
Q4 2018 283 $5,068,181,000 +$392,565,337 -$463,400,130 -$70,834,793 ICUI, FIVE, LOPE, EPAM, TXRH 13F-HR 07 Feb 2019, 13:21
Q3 2018 286 $6,208,898,000 +$350,902,565 -$481,226,821 -$130,324,256 ICUI, FIVE, CTLT, LOPE, EPAM 13F-HR 06 Nov 2018, 14:23
Q2 2018 288 $6,107,755,000 +$297,931,857 -$386,549,641 -$88,617,784 ICUI, FIVE, LOGM, LOPE, CTLT 13F-HR 07 Aug 2018, 10:45
Q1 2018 292 $5,922,175,000 +$558,924,965 -$443,273,590 +$115,651,375 ICUI, LOGM, LOPE, CTLT, TYL 13F-HR 08 May 2018, 10:35
Q4 2017 269 $5,853,763,000 +$413,730,676 -$748,549,046 -$334,818,370 ICUI, LOGM, WST, LOPE, TYL 13F-HR 19 Jan 2018, 11:12
Q3 2017 261 $5,998,409,000 +$341,574,949 -$340,239,097 +$1,335,852 WST, ICUI, LOPE, TYL, LAD 13F-HR 11 Oct 2017, 11:33
Q2 2017 246 $5,794,560,000 +$584,885,934 -$266,970,210 +$317,915,724 MKTX, WST, TYL, ICUI, LOPE 13F-HR 11 Jul 2017, 15:20
Q1 2017 229 $5,310,471,000 +$240,626,491 -$306,526,342 -$65,899,851 MKTX, WST, CGNX, LOPE, ICUI 13F-HR 10 Apr 2017, 11:52
Q4 2016 232 $5,127,233,000 +$296,935,938 -$711,472,662 -$414,536,724 MKTX, WST, ACC, ICUI, TYL 13F-HR 17 Jan 2017, 16:06
Q3 2016 220 $5,324,968,000 +$595,656,151 -$288,718,477 +$306,937,674 MKTX, TYL, ACC, WST, LOGM 13F-HR 18 Oct 2016, 15:07
Q2 2016 222 $4,843,958,000 +$405,905,710 -$264,238,312 +$141,667,398 MKTX, WST, TYL, ACC, RBA Restatement 26 Jul 2016, 15:19
Q1 2016 218 $4,511,919,000 +$425,563,599 -$269,369,390 +$156,194,209 MKTX, WST, ACC, LOPE, TYL 13F-HR 19 Apr 2016, 14:54
Q4 2015 227 $4,259,244,000 +$302,955,632 -$354,615,590 -$51,659,958 MKTX, TYL, WST, ICUI, LOPE 13F-HR 15 Jan 2016, 17:05
Q3 2015 223 $4,188,354,000 +$348,160,320 -$192,690,664 +$155,469,656 MKTX, TYL, WST, BLKB, ACC 13F-HR 08 Oct 2015, 15:16
Q2 2015 224 $4,395,085,000 +$272,585,034 -$272,784,502 -$199,468 TYL, MKTX, CGNX, WST, CEB 13F-HR 08 Jul 2015, 16:12
Q1 2015 222 $4,396,707,000 +$401,102,317 -$308,804,041 +$92,298,276 TYL, MKTX, WST, CGNX, ACC 13F-HR 08 Apr 2015, 16:08
Q4 2014 219 $4,185,055,000 +$302,027,787 -$231,699,345 +$70,328,442 TYL, MKTX, ACC, WST, LOPE 13F-HR 08 Jan 2015, 14:55
Q3 2014 224 $3,808,745,000 +$301,429,928 -$215,878,504 +$85,551,424 LOPE, MIDD, CNL, MKTX, TYL 13F-HR 08 Oct 2014, 17:58
Q2 2014 226 $3,949,110,000 +$468,498,734 -$244,529,245 +$223,969,489 CNL, LOPE, GPI, FEIC, TYL 13F-HR 09 Jul 2014, 16:19
Q1 2014 222 $3,729,249,000 +$263,926,973 -$205,464,176 +$58,462,797 MIDD, LOPE, CNL, FEIC, MKTX 13F-HR 11 Apr 2014, 11:58
Q4 2013 220 $3,670,725,000 $0 $0 $0 MIDD, MKTX, LOPE, TYL, CNL 13F-HR 13 Jan 2014, 15:08