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Institutional Investment Manager
GW&K Investment Management, LLC
GW&K Investment Management, LLC (CIK: 0001082917) incorporated in Massachusetts, located at 222 Berkeley St Suite 1500, Boston, MA. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q3)
Portfolio Summary: 223 holdings with a total value of $4,188,354,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 MARKETAXESS HLDGS INC 825,881 76,708,000 1.83%
2 TYLER TECHNOLOGIES INC 510,598 76,237,000 1.82%
3 WEST PHARMACEUTICAL SVSC INC 1,185,296 64,148,000 1.53%
4 BLACKBAUD INC COM 1,059,266 59,446,000 1.42%
5 AMERICAN CAMPUS CMNTYS INC 1,606,843 58,232,000 1.39%
6 ICU MED INC COM 531,724 58,224,000 1.39%
7 TEXAS ROADHOUSE INC 1,517,944 56,468,000 1.35%
8 GRAND CANYON ED INC 1,482,428 56,317,000 1.34%
9 TORO CO 764,892 53,955,000 1.29%
10 COGNEX CORP 1,503,985 51,692,000 1.23%
11 The Ryland Group Inc (Acquired 10/1/15) 1,246,090 50,878,000 1.21%
12 NATIONAL HEALTH INVS INC 869,689 49,998,000 1.19%
13 CEB Inc 727,448 49,714,000 1.19%
14 GLACIER BANCORP INC NEW COM 1,844,078 48,665,000 1.16%
15 LITHIA MTRS INC COM 448,612 48,499,000 1.16%
16 RITCHIE BROS AUCTIONEERS 1,833,380 47,448,000 1.13%
17 NORTHWESTERN ENERGY GROUP INC COM NEW 875,270 47,116,000 1.12%
18 FEI COMPANY 636,832 46,514,000 1.11%
19 PROASSURANCE CORP COM 909,222 44,616,000 1.07%
20 HEARTLAND EXPRESS INC COM 2,217,043 44,208,000 1.06%
21 HEALTHCARE SVCS GROUP INC COM 1,288,698 43,429,000 1.04%
22 TEXAS CAP BANCSHARES INC COM 827,500 43,378,000 1.04%
23 PROTO LABS INC 643,206 43,095,000 1.03%
24 PRA GROUP INC 796,637 42,158,000 1.01%
25 FIVE BELOW INC COM 1,215,820 40,827,000 0.97%
26 LogMeIn Inc 587,681 40,056,000 0.96%
27 SILGAN HOLDINGS INC 762,492 39,680,000 0.95%
28 EPAM SYS INC 531,474 39,605,000 0.95%
29 CAVIUM INC 629,342 38,623,000 0.92%
30 CMS Energy Corp 725,353 38,618,000 0.92%
31 STIFEL FINANCIAL CP 899,782 37,881,000 0.90%
32 TEAM HEALTH HOLDINGS INCORPORATED 679,974 36,739,000 0.88%
33 RBC BEARINGS INC 611,154 36,504,000 0.87%
34 RPM INTL INC 867,905 36,357,000 0.87%
35 SOLERA HOLDINGS INC 672,362 36,308,000 0.87%
36 OXFORD INDS INC COM 488,454 36,087,000 0.86%
37 PEBBLEBROOK HOTEL TR 1,006,187 35,669,000 0.85%
38 POWER INTEGRATIONS INC COM 836,409 35,271,000 0.84%
39 WEBSTER FINL CORP CONN 974,637 34,726,000 0.83%
40 GLOBUS MED INC 1,577,749 32,596,000 0.78%
41 CATHAY GEN BANCORP 1,085,561 32,523,000 0.78%
42 IBERIABANK CORP COM 554,612 32,284,000 0.77%
43 ASPEN TECHNOLOGY INC 846,362 32,086,000 0.77%
44 MICROCHIP TECHNOLOGY 744,438 32,078,000 0.77%
45 MATADOR RES CO 1,536,960 31,877,000 0.76%
46 CLARCOR Inc 651,386 31,058,000 0.74%
47 AMERISAFE INC COM 616,194 30,643,000 0.73%
48 HIBBETT INC COM 871,043 30,495,000 0.73%
49 CATALENT INC 1,254,466 30,484,000 0.73%
50 COMPASS MINERALS INTL INC 388,981 30,484,000 0.73%
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Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001082917-15-000009, filed 2015.10.08).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.