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

Institutional Holders (2014Q3)
Portfolio Summary: 108 Institutional holders with a total value of $347,932,227.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRICE T ROWE ASSOCIATES INC /MD/ 1,059,563 58,679,000 16.87%
2 NUANCE INVESTMENTS, LLC 615,100 34,064,000 9.79%
3 VANGUARD GROUP INC 550,148 30,467,000 8.76%
4 AMERICAN CENTURY COMPANIES INC 505,143 27,975,000 8.04%
5 BlackRock Fund Advisors 411,753 22,803,000 6.55%
6 RENAISSANCE TECHNOLOGIES LLC 382,471 21,181,000 6.09%
7 ROYCE & ASSOCIATES LP 333,297 18,458,000 5.31%
8 DIMENSIONAL FUND ADVISORS LP 243,940 13,510,000 3.88%
9 BlackRock Institutional Trust Company, N.A. 220,136 12,191,000 3.50%
10 AMERIPRISE FINANCIAL INC 208,879 11,567,000 3.32%
11 DEPRINCE RACE & ZOLLO INC 170,894 9,464,000 2.72%
12 STATE STREET CORP 167,660 9,289,000 2.67%
13 ING GROEP NV 129,400 7,195,000 2.07%
14 Bank of New York Mellon Corp 112,786 6,246,000 1.80%
15 NORTHERN TRUST CORP 92,855 5,143,000 1.48%
16 EAGLE BOSTON INVESTMENT MANAGEMENT INC 84,751 4,693,000 1.35%
17 GEODE CAPITAL MANAGEMENT, LLC 79,929 4,426,000 1.27%
18 NORGES BANK 69,512 3,850,000 1.11%
19 PRINCIPAL FINANCIAL GROUP INC 47,604 2,636,000 0.76%
20 TIAA CREF INVESTMENT MANAGEMENT LLC 45,057 2,495,000 0.72%
21 QS BATTERYMARCH FINANCIAL MANAGEMENT, INC 35,925 1,990,000 0.57%
22 Invesco Ltd. 32,631 1,807,000 0.52%
23 GOLDMAN SACHS GROUP INC 30,692 1,700,000 0.49%
24 BlackRock Investment Management, LLC 29,968 1,660,000 0.48%
25 AQR CAPITAL MANAGEMENT LLC 29,900 1,656,000 0.48%
26 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 26,800 1,484,000 0.43%
27 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 25,772 1,428,000 0.41%
28 GUGGENHEIM CAPITAL LLC 22,421 1,240,000 0.36%
29 ALLIANCEBERNSTEIN L.P. 21,964 1,216,000 0.35%
30 RHUMBLINE ADVISERS 21,356 1,183,000 0.34%
31 SUSQUEHANNA INTERNATIONAL GROUP, LLP 20,100 1,113,000 0.32% Put
32 NEW YORK STATE COMMON RETIREMENT FUND 19,772 1,095,000 0.31%
33 PRUDENTIAL FINANCIAL INC 17,552 972,000 0.28%
34 UBS AG 17,457 967,000 0.28%
35 SUSQUEHANNA INTERNATIONAL GROUP, LLP 17,400 964,000 0.28% Call
36 Nationwide Fund Advisors 15,877 879,000 0.25%
37 PARAMETRIC PORTFOLIO ASSOCIATES LLC 15,842 877,000 0.25%
38 TWO SIGMA ADVISERS, LP 15,043 833,000 0.24%
39 PUBLIC SECTOR PENSION INVESTMENT BOARD 14,898 825,000 0.24%
40 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 14,522 804,000 0.23%
41 BlackRock Group LTD 14,251 789,000 0.23%
42 MORGAN STANLEY 13,154 729,000 0.21%
43 DEUTSCHE BANK AG\ 12,959 716,000 0.21%
44 SMITH ASSET MANAGEMENT GROUP LP 12,595 698,000 0.20%
45 TWO SIGMA INVESTMENTS, LP 11,745 650,000 0.19%
46 TEACHERS ADVISORS, LLC 11,501 637,000 0.18%
47 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 11,237 622,000 0.18%
48 ROYAL BANK OF CANADA 9,876 546,000 0.16%
49 I.G. INVESTMENT MANAGEMENT, LTD. 9,795 542,000 0.16%
50 CITADEL ADVISORS LLC 9,701 538,000 0.15%
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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.