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Institutional Investment Manager
EMERALD ADVISERS, LLC
EMERALD ADVISERS, LLC (CIK: 0001015083) incorporated in Pennsylvania, located at 3175 Oregon Pike, Leola, PA. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q4)
Portfolio Summary: 337 holdings with a total value of $1,884,962,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 MWI VETERINARY SUP 278,497 47,319,000 2.51%
2 SPIRIT AIRLS INC 545,280 41,212,000 2.19%
3 EPAM SYS INC 666,836 31,841,000 1.69%
4 PROOFPOINT INC 595,815 28,736,000 1.52%
5 ACADIA HEALTHCARE COMPANY IN 451,690 27,648,000 1.47%
6 BANK OF THE OZARKS 705,016 26,734,000 1.42%
7 CEPHEID 488,605 26,453,000 1.40%
8 WABTEC 289,732 25,175,000 1.34%
9 JACK IN THE BOX INC 309,795 24,771,000 1.31%
10 AMTRUST FINL SVCS INC 434,704 24,452,000 1.30%
11 ALNYLAM PHARMACEUTICALS INC 250,732 24,321,000 1.29%
12 FARO TECHNOLOGIES INC COM 375,371 23,528,000 1.25%
13 WESCO INTL INC 296,504 22,597,000 1.20%
14 BRUNSWICK CORP 434,229 22,259,000 1.18%
15 POLYONE CORP 583,103 22,105,000 1.17%
16 IMPERVA INC 446,483 22,070,000 1.17%
17 QLIK TECHNOLOGIES INC COM 683,086 21,101,000 1.12%
18 APOGEE ENTERPRISES INC COM 496,626 21,042,000 1.12%
19 BLUEBIRD BIO INCORPORATED 219,046 20,091,000 1.07%
20 TREX CO INC COM 471,219 20,065,000 1.06%
21 IPG PHOTONICS CORP 255,768 19,162,000 1.02%
22 Ultimate Software Group Inc 129,086 18,952,000 1.01%
23 MICROSEMI CORP 641,111 18,195,000 0.97%
24 INTREXON CORP 660,476 18,183,000 0.96%
25 OPUS BK IRVINE CALIF 634,242 17,993,000 0.95%
26 KFORCE INC COM 745,594 17,991,000 0.95%
27 HOMEAWAY INC 601,105 17,901,000 0.95%
28 RED ROBIN GOURMET BURGERS INC COM 223,533 17,206,000 0.91%
29 CAVIUM INC 264,475 16,350,000 0.87%
30 CUSTOMERS BANCORP INC COM 837,338 16,295,000 0.86%
31 MICROSTRATEGY INC CL A NEW 90,313 14,667,000 0.78%
32 ACUITY BRANDS INC 104,214 14,597,000 0.77%
33 PACWEST BANCORP DEL COM 319,194 14,511,000 0.77%
34 FIRST NBC BK HLDG CO 402,370 14,163,000 0.75%
35 ANSYS 168,089 13,783,000 0.73%
36 TUTOR PERINI CORP 568,148 13,675,000 0.73%
37 FIVE BELOW INC COM 325,941 13,308,000 0.71%
38 WELLCARE HEALTH PLANS INC COM 161,414 13,246,000 0.70%
39 MACROGENICS INC 375,229 13,159,000 0.70%
40 NPS Pharmaceuticals, Inc. 363,906 13,017,000 0.69%
41 KNOLL INC 595,160 12,600,000 0.67%
42 FCB FINL HLDGS INC 503,325 12,402,000 0.66%
43 CHANNELADVISOR CORP COM 574,017 12,387,000 0.66%
44 ASTRONICS CORP COM 221,563 12,255,000 0.65%
45 8X8 INC NEW COM 1,331,102 12,193,000 0.65%
46 DIAMONDBACK ENERGY 203,892 12,189,000 0.65%
47 NEUROCRINE BIOSCIE COM USD0.001 540,973 12,085,000 0.64%
48 HORIZON PHARMA PLC 935,655 12,061,000 0.64%
49 K2M GROUP HLDGS INC COM 567,947 11,853,000 0.63%
50 DEPOMED INC 727,991 11,728,000 0.62%
Page 1 of 7

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001144204-15-004980, filed 2015.01.30).

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.