Institutional Manager · CIK 0001082917
GW&K Investment Management, LLC
BOSTON, MA · File #028-04145
Latest AUM
$11.6M
Positions
1,178
Top-10 Concentration
31.3%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | RBC BEARINGS INC | RBC | -338,048 | -$151,623 | +$21,242 |
| ADD | NORDSON CORP | NDSN | +293,972 | +$70,679 | +$386 |
| ADD | POWELL INDUSTRIES INC | 739128106 | +217,191 | +$69,236 | +$263 |
| ADD | NEUROCRINE BIOSCIENCES INC | NBIX | +486,066 | +$68,939 | +$66 |
| REDUCE | COMFORT SYSTEMS USA INC | 199908104 | -58,503 | -$54,600 | +$17,335 |
| ADD | ENTEGRIS INC | ENTG | +643,426 | +$54,208 | -$440 |
| REDUCE | FEDERAL SIGNAL CORP | FSS | -481,505 | -$52,288 | -$5,576 |
| NEW | VIPER ENERGY INC-CL A | VNOM | +1,101,472 | +$42,550 | $0 |
| REDUCE | ZEBRA TECHNOLOGIES CORP-CL A | ZBRA | -168,140 | -$40,823 | -$9,213 |
| ADD | AEROVIRONMENT INC | AVAV | +159,960 | +$38,693 | -$3,890 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 20251,178 pos · $11.6M
- 13F HOLDINGS REPORTQ/E Sep 20251,179 pos · $11.3M
- 13F HOLDINGS REPORTQ/E Jun 20251,168 pos · $11.2M
- 13F HOLDINGS REPORTQ/E Mar 20251,189 pos · $10.8M
- 13F HOLDINGS REPORTQ/E Dec 20241,154 pos · $11.8M
- 13F HOLDINGS REPORTQ/E Sep 20241,139 pos · $11.7M
- 13F HOLDINGS REPORTQ/E Jun 20241,128 pos · $10.9M
- 13F HOLDINGS REPORTQ/E Mar 20241,105 pos · $11.3M
- 13F HOLDINGS REPORTQ/E Dec 20231,102 pos · $10.0M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | MACOM TECHNOLOGY SOLUTIONS H | 55405Y100 | 1,133,624 | $194,167 | 4.49% |
| 2 | RBC BEARINGS INC | RBC | 337,624 | $151,401 | 3.50% |
| 3 | MICROSOFT CORP | MSFT | 300,944 | $145,542 | 3.37% |
| 4 | ITT INC | ITT | 800,702 | $138,930 | 3.21% |
| 5 | BROADCOM INC | AVGO | 395,569 | $136,906 | 3.17% |
| 6 | ADVANCED ENERGY INDUSTRIES | 007973100 | 633,113 | $132,555 | 3.07% |
| 7 | GLOBUS MEDICAL INC - A | GMED | 1,408,744 | $122,997 | 2.85% |
| 8 | GRAND CANYON EDUCATION INC | LOPE | 696,193 | $115,784 | 2.68% |
| 9 | API GROUP CORP | APG | 2,937,828 | $112,401 | 2.60% |
| 10 | STIFEL FINANCIAL CORP | 860630102 | 823,500 | $103,119 | 2.39% |
| 11 | TEXAS ROADHOUSE INC | TXRH | 599,550 | $99,525 | 2.30% |
| 12 | SPX TECHNOLOGIES INC | SPXC | 484,878 | $97,005 | 2.24% |
| 13 | COMFORT SYSTEMS USA INC | 199908104 | 101,844 | $95,050 | 2.20% |
| 14 | BURLINGTON STORES INC | BURL | 317,356 | $91,668 | 2.12% |
| 15 | PIPER SANDLER COS | PIPR | 269,629 | $91,596 | 2.12% |
| 16 | GATES INDUSTRIAL CORP PLC | G39108108 | 4,169,791 | $89,525 | 2.07% |
| 17 | STERLING INFRASTRUCTURE INC | STRL | 292,290 | $89,508 | 2.07% |
| 18 | ABBVIE INC | ABBV | 374,931 | $85,668 | 1.98% |
| 19 | IDACORP INC | IDA | 657,193 | $83,174 | 1.92% |
| 20 | PERFORMANCE FOOD GROUP CO | PFGC | 913,495 | $82,141 | 1.90% |