Dark
Light
System
Security
AMERICAN SCIENCE & ENGR INC
AMERICAN SCIENCE & ENGR INC . Institutional holdings reported to the SEC.

Institutional Holders (2015Q2)
Portfolio Summary: 111 Institutional holders with a total value of $248,809,487.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRICE T ROWE ASSOCIATES INC /MD/ 939,723 41,169,000 16.55%
2 NUANCE INVESTMENTS, LLC 732,206 32,078,000 12.89%
3 VANGUARD GROUP INC 576,271 25,247,000 10.15%
4 BlackRock Fund Advisors 433,256 18,981,000 7.63%
5 ROYCE & ASSOCIATES LP 287,697 12,604,000 5.07%
6 RENAISSANCE TECHNOLOGIES LLC 282,400 12,372,000 4.97%
7 AMERIPRISE FINANCIAL INC 239,936 10,510,000 4.22%
8 DIMENSIONAL FUND ADVISORS LP 236,816 10,375,000 4.17%
9 BlackRock Institutional Trust Company, N.A. 200,833 8,798,000 3.54%
10 DEPRINCE RACE & ZOLLO INC 172,927 7,576,000 3.04%
11 AMERICAN CENTURY COMPANIES INC 124,221 5,442,000 2.19%
12 ING GROEP NV 106,000 4,642,000 1.87%
13 Bank of New York Mellon Corp 99,336 4,352,000 1.75%
14 UNIPLAN INVESTMENT COUNSEL, INC. 96,105 4,210,000 1.69%
15 NORTHERN TRUST CORP 82,317 3,606,000 1.45%
16 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 69,500 3,045,000 1.22%
17 FULLER & THALER ASSET MANAGEMENT, INC. 68,985 3,022,000 1.21%
18 BLACKROCK ADVISORS LLC 62,794 2,751,000 1.11%
19 GEODE CAPITAL MANAGEMENT, LLC 53,052 2,324,000 0.93%
20 PRINCIPAL FINANCIAL GROUP INC 43,523 1,907,000 0.77%
21 Aristotle Capital Boston, LLC 42,857 1,878,000 0.75%
22 INTREPID CAPITAL MANAGEMENT INC 38,972 1,707,000 0.69%
23 NORGES BANK 37,262 1,632,000 0.66%
24 BlackRock Investment Management, LLC 31,089 1,362,000 0.55%
25 PARAMETRIC PORTFOLIO ASSOCIATES LLC 30,971 1,357,000 0.55%
26 TIAA CREF INVESTMENT MANAGEMENT LLC 28,226 1,237,000 0.50%
27 DEUTSCHE BANK AG\ 26,476 1,158,000 0.47%
28 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 22,975 1,007,000 0.40%
29 Invesco Ltd. 21,413 938,000 0.38%
30 BlackRock Group LTD 19,945 874,000 0.35%
31 MILLENNIUM MANAGEMENT LLC 17,892 784,000 0.32%
32 EAGLE BOSTON INVESTMENT MANAGEMENT INC 17,199 753,000 0.30%
33 South Dakota Investment Council 17,150 751,000 0.30%
34 PRUDENTIAL FINANCIAL INC 16,652 730,000 0.29%
35 MENTA CAPITAL LLC 15,014 658,000 0.26%
36 COMERICA BANK 14,536 636,000 0.26%
37 MORGAN STANLEY 14,373 629,000 0.25%
38 ALLIANCEBERNSTEIN L.P. 14,259 625,000 0.25%
39 NEW YORK STATE COMMON RETIREMENT FUND 13,625 597,000 0.24%
40 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 13,492 591,000 0.24%
41 TEACHERS ADVISORS, LLC 12,829 562,000 0.23%
42 RHUMBLINE ADVISERS 11,981 525,000 0.21%
43 PEAK6 Group LLC 11,800 517,000 0.21% Call
44 I.G. INVESTMENT MANAGEMENT, LTD. 11,584 508,000 0.20%
45 TWO SIGMA ADVISERS, LP 11,543 506,000 0.20%
46 PUBLIC SECTOR PENSION INVESTMENT BOARD 11,080 485,000 0.19%
47 SUSQUEHANNA INTERNATIONAL GROUP, LLP 10,100 442,000 0.18% Put
48 A.R.T. Advisors, LLC 9,851 431,000 0.17%
49 CREDIT SUISSE AG/ 9,634 422,000 0.17%
50 PARADIGM ASSET MANAGEMENT CO LLC 9,300 407,433 0.16%
Page 1 of 3

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.