Dark
Light
System
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 (2015Q4)
Portfolio Summary: 227 holdings with a total value of $4,259,244,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 MARKETAXESS HLDGS INC 791,964 88,375,000 2.07%
2 TYLER TECHNOLOGIES INC 467,765 81,541,000 1.91%
3 WEST PHARMACEUTICAL SVSC INC 1,153,222 69,447,000 1.63%
4 ICU MED INC COM 521,048 58,764,000 1.38%
5 GRAND CANYON ED INC 1,442,252 57,863,000 1.36%
6 BLACKBAUD INC COM 876,117 57,701,000 1.35%
7 AMERICAN CAMPUS CMNTYS INC 1,384,698 57,243,000 1.34%
8 TORO CO 746,633 54,556,000 1.28%
9 TEXAS ROADHOUSE INC 1,472,794 52,682,000 1.24%
10 NATIONAL HEALTH INVS INC 858,355 52,248,000 1.23%
11 COGNEX CORP 1,471,764 49,701,000 1.17%
12 FEI COMPANY 619,728 49,448,000 1.16%
13 GLACIER BANCORP INC NEW COM 1,805,776 47,907,000 1.12%
14 STANDARD PAC CORP NEW 1,248,578 47,346,000 1.11%
15 LITHIA MTRS INC COM 436,541 46,566,000 1.09%
16 NORTHWESTERN ENERGY GROUP INC COM NEW 849,833 46,103,000 1.08%
17 CEB Inc 711,196 43,660,000 1.03%
18 RITCHIE BROS AUCTIONEERS 1,797,376 43,335,000 1.02%
19 PROASSURANCE CORP COM 892,768 43,326,000 1.02%
20 GLOBUS MED INC 1,535,697 42,723,000 1.00%
21 SUN COMMUNITIES INC COM 618,727 42,401,000 1.00%
22 POWER INTEGRATIONS INC COM 869,989 42,308,000 0.99%
23 CAVIUM INC 619,746 40,724,000 0.96%
24 EPAM SYS INC 517,252 40,666,000 0.95%
25 PROTO LABS INC 631,736 40,235,000 0.94%
26 TEXAS CAP BANCSHARES INC COM 804,237 39,745,000 0.93%
27 LogMeIn Inc 572,544 38,418,000 0.90%
28 Education Realty Trust Inc 1,010,694 38,285,000 0.90%
29 RPM INTL INC 856,635 37,743,000 0.89%
30 CATALENT INC 1,504,470 37,657,000 0.88%
31 MEDIDATA SOLUTIONS INC 761,623 37,540,000 0.88%
32 FIVE BELOW INC COM 1,162,349 37,311,000 0.88%
33 STIFEL FINANCIAL CP 876,163 37,114,000 0.87%
34 HEARTLAND EXPRESS INC COM 2,163,877 36,829,000 0.86%
35 HEALTHCARE SVCS GROUP INC COM 1,033,707 36,045,000 0.85%
36 WEBSTER FINL CORP CONN 959,152 35,671,000 0.84%
37 TEAM HEALTH HOLDINGS INCORPORATED 780,885 34,273,000 0.80%
38 KAPSTONE PAPER & PACKAGING CRP COM 1,509,451 34,098,000 0.80%
39 RBC BEARINGS INC 520,748 33,635,000 0.79%
40 CATHAY GEN BANCORP 1,059,986 33,209,000 0.78%
41 MICROCHIP TECHNOLOGY 700,414 32,597,000 0.77%
42 UNIVERSAL FOREST PRODS INC 470,300 32,154,000 0.75%
43 Diplomat Pharmacy Inc 938,383 32,111,000 0.75%
44 WD 40 CO COM 321,346 31,701,000 0.74%
45 Wright Medical Group NV 1,299,009 31,410,000 0.74%
46 CLARCOR Inc 631,054 31,351,000 0.74%
47 CANTEL MED CORP 499,103 31,014,000 0.73%
48 PRA GROUP INC 893,365 30,991,000 0.73%
49 GENERAL ELECTRIC CO 990,614 30,858,000 0.72%
50 HEICO CORP NEW 562,618 30,584,000 0.72%
Page 1 of 5

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001082917-16-000011, filed 2016.01.15).

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.