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ATMI INC
ATMI INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q1)
Portfolio Summary: 151 Institutional holders with a total value of $1,044,574,970.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 FMR LLC 3,018,730 102,667,000 9.83%
2 VANGUARD GROUP INC 2,148,853 73,083,000 7.00%
3 BlackRock Fund Advisors 1,773,622 60,321,000 5.77%
4 DIMENSIONAL FUND ADVISORS LP 1,452,146 49,388,000 4.73%
5 GABELLI FUNDS LLC 1,336,687 45,461,000 4.35%
6 PRICE T ROWE ASSOCIATES INC /MD/ 1,225,222 41,670,000 3.99%
7 WATER ISLAND CAPITAL LLC 1,156,734 39,340,000 3.77%
8 BlackRock Institutional Trust Company, N.A. 1,144,478 38,924,000 3.73%
9 INVESTMENT COUNSELORS OF MARYLAND LLC 1,000,850 34,039,000 3.26%
10 AQR CAPITAL MANAGEMENT LLC 854,233 29,052,000 2.78%
11 JPMORGAN CHASE & CO 832,792 28,323,000 2.71%
12 STATE STREET CORP 816,503 27,766,000 2.66%
13 NORTHERN TRUST CORP 797,709 27,131,000 2.60%
14 AMERIPRISE FINANCIAL INC 714,517 24,300,000 2.33%
15 GAMCO INVESTORS, INC. ET AL 665,321 22,628,000 2.17%
16 CREDIT SUISSE AG/ 633,378 21,542,000 2.06%
17 MILLENNIUM MANAGEMENT LLC 627,258 21,333,000 2.04%
18 MORGAN STANLEY 615,838 20,945,000 2.01%
19 LG Capital Management, LP 612,711 20,838,000 1.99%
20 HERALD INVESTMENT MANAGEMENT Ltd 580,000 19,703,000 1.89%
21 RENAISSANCE TECHNOLOGIES LLC 502,492 17,090,000 1.64%
22 GABELLI & Co INVESTMENT ADVISERS, INC. 403,353 13,718,000 1.31%
23 ALPINE ASSOCIATES ADVISORS 369,100 12,553,000 1.20%
24 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 367,648 12,504,000 1.20%
25 Granahan Investment Management, LLC 340,700 11,587,000 1.11%
26 BARCLAYS PLC 303,952 10,335,000 0.99%
27 DEUTSCHE BANK AG\ 303,302 10,314,000 0.99%
28 Bank of New York Mellon Corp 301,026 10,238,000 0.98%
29 NORGES BANK 294,461 10,015,000 0.96%
30 SEGALL BRYANT & HAMILL, LLC 293,227 9,973,000 0.95%
31 JENNISON ASSOCIATES LLC 269,416 9,163,000 0.88%
32 ROYCE & ASSOCIATES LP 235,623 8,014,000 0.77%
33 Loeb Offshore Management LP 222,504 7,567,000 0.72%
34 SG Americas Securities, LLC 211,007 7,176,000 0.69%
35 PRINCIPAL FINANCIAL GROUP INC 209,163 7,114,000 0.68%
36 OMERS ADMINISTRATION Corp 201,400 6,850,000 0.66%
37 FORESTERS INVESTMENT MANAGEMENT COMPANY, INC. 191,200 6,503,000 0.62%
38 GEODE CAPITAL MANAGEMENT, LLC 179,860 6,116,000 0.59%
39 TIAA CREF INVESTMENT MANAGEMENT LLC 147,729 5,024,000 0.48%
40 KENNEDY CAPITAL MANAGEMENT LLC 131,876 4,485,000 0.43%
41 BlackRock Investment Management, LLC 126,981 4,319,000 0.41%
42 Lombard Odier Asset Management (USA) Corp 125,000 4,251,000 0.41%
43 GLAZER CAPITAL, LLC 121,807 4,143,000 0.40%
44 Visium Asset Management, LP 119,044 4,050,000 0.39%
45 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 110,439 3,757,000 0.36%
46 UNITED SERVICES AUTOMOBILE ASSOCIATION 94,300 3,207,000 0.31%
47 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 90,080 3,064,000 0.29%
48 PRUDENTIAL FINANCIAL INC 85,131 2,895,000 0.28%
49 Invesco Ltd. 82,427 2,803,000 0.27%
50 MASON STREET ADVISORS, LLC 81,142 2,760,000 0.26%
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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.