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AMERICAN SCIENCE & ENGR INC
AMERICAN SCIENCE & ENGR INC . Institutional holdings reported to the SEC.

Institutional Holders (2014Q2)
Portfolio Summary: 120 Institutional holders with a total value of $427,896,896.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRICE T ROWE ASSOCIATES INC /MD/ 1,042,253 72,530,000 16.95%
2 VANGUARD GROUP INC 539,369 37,535,000 8.77%
3 NUANCE INVESTMENTS, LLC 521,936 36,322,000 8.49%
4 AMERICAN CENTURY COMPANIES INC 431,542 30,031,000 7.02%
5 BlackRock Fund Advisors 422,860 29,427,000 6.88%
6 RENAISSANCE TECHNOLOGIES LLC 384,640 26,767,000 6.26%
7 ROYCE & ASSOCIATES LP 324,497 22,582,000 5.28%
8 DIMENSIONAL FUND ADVISORS LP 234,845 16,343,000 3.82%
9 BlackRock Institutional Trust Company, N.A. 232,377 16,171,000 3.78%
10 AMERIPRISE FINANCIAL INC 212,245 14,770,000 3.45%
11 DEPRINCE RACE & ZOLLO INC 188,769 13,136,000 3.07%
12 STATE STREET CORP 169,867 11,825,000 2.76%
13 Bank of New York Mellon Corp 108,591 7,558,000 1.77%
14 NORTHERN TRUST CORP 99,525 6,926,000 1.62%
15 EAGLE BOSTON INVESTMENT MANAGEMENT INC 84,743 5,897,000 1.38%
16 GEODE CAPITAL MANAGEMENT, LLC 79,762 5,550,000 1.30%
17 NORGES BANK 69,512 4,837,000 1.13%
18 ING GROEP NV 60,200 4,166,000 0.97%
19 SMITH ASSET MANAGEMENT GROUP LP 52,715 3,668,000 0.86%
20 PRINCIPAL FINANCIAL GROUP INC 48,010 3,341,000 0.78%
21 TIAA CREF INVESTMENT MANAGEMENT LLC 45,997 3,201,000 0.75%
22 AQR CAPITAL MANAGEMENT LLC 40,500 2,818,000 0.66%
23 QS BATTERYMARCH FINANCIAL MANAGEMENT, INC 39,896 2,777,000 0.65%
24 GOLDMAN SACHS GROUP INC 36,426 2,535,000 0.59%
25 Invesco Ltd. 33,201 2,310,000 0.54%
26 BlackRock Investment Management, LLC 29,883 2,080,000 0.49%
27 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 25,400 1,768,000 0.41%
28 RHUMBLINE ADVISERS 23,706 1,650,000 0.39%
29 ALLIANCEBERNSTEIN L.P. 23,264 1,619,000 0.38%
30 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 22,703 1,580,000 0.37%
31 PRUDENTIAL FINANCIAL INC 20,627 1,435,000 0.34%
32 GUGGENHEIM CAPITAL LLC 20,222 1,408,000 0.33%
33 NEW YORK STATE COMMON RETIREMENT FUND 19,772 1,376,000 0.32%
34 PUBLIC SECTOR PENSION INVESTMENT BOARD 17,239 1,200,000 0.28%
35 TWO SIGMA ADVISERS, LP 15,943 1,109,000 0.26%
36 Nationwide Fund Advisors 15,908 1,107,000 0.26%
37 UBS AG 15,830 1,102,000 0.26%
38 PARAMETRIC PORTFOLIO ASSOCIATES LLC 15,463 1,076,000 0.25%
39 Sterneck Capital Management, LLC 15,165 1,055,000 0.25%
40 BlackRock Group LTD 14,537 1,011,000 0.24%
41 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 14,340 998,000 0.23%
42 TEACHERS ADVISORS, LLC 11,941 831,000 0.19%
43 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 11,237 782,000 0.18%
44 SUSQUEHANNA INTERNATIONAL GROUP, LLP 10,200 710,000 0.17% Put
45 CREDIT SUISSE AG/ 9,528 663,000 0.15%
46 I.G. INVESTMENT MANAGEMENT, LTD. 9,390 653,000 0.15%
47 DEUTSCHE BANK AG\ 9,358 650,000 0.15%
48 WELLINGTON MANAGEMENT GROUP LLP 9,168 638,000 0.15%
49 MORGAN STANLEY 9,157 637,000 0.15%
50 MILLENNIUM MANAGEMENT LLC 8,250 574,000 0.13%
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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.