Dark
Light
System
Security
ARMSTRONG WORLD INDS INC NEW COM
ARMSTRONG WORLD INDS INC NEW COM. Institutional holdings reported to the SEC.

Institutional Holders (2017Q2)
Portfolio Summary: 168 Institutional holders with a total value of $2,603,355,188.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 ValueAct Holdings, L.P. 9,200,000 423,200,000 16.26%
2 IRIDIAN ASSET MANAGEMENT LLC/CT 4,750,675 218,531,000 8.39%
3 VANGUARD GROUP INC 3,491,622 160,614,000 6.17%
4 LONDON CO OF VIRGINIA 2,961,146 136,213,000 5.23%
5 Stockbridge Partners LLC 2,613,441 120,218,000 4.62%
6 BlackRock Finance, Inc. 1,846,077 84,920,000 3.26%
7 FULLER & THALER ASSET MANAGEMENT, INC. 1,824,517 83,928,000 3.22%
8 PRICE T ROWE ASSOCIATES INC /MD/ 1,812,286 83,365,000 3.20%
9 TIGER GLOBAL MANAGEMENT LLC 1,779,431 81,854,000 3.14%
10 Marble Arch Investments, LP 1,750,000 80,500,000 3.09%
11 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,678,225 77,198,000 2.97%
12 First Eagle Investment Management, LLC 1,323,541 60,883,000 2.34%
13 BRIDGER MANAGEMENT, LLC 1,251,456 57,567,000 2.21%
14 DIMENSIONAL FUND ADVISORS LP 1,224,261 56,315,000 2.16%
15 BALYASNY ASSET MANAGEMENT L.P. 1,077,712 49,575,000 1.90%
16 ADVISORY RESEARCH INC 1,033,263 47,530,000 1.83%
17 STATE STREET CORP 1,014,984 46,689,000 1.79%
18 MILLENNIUM MANAGEMENT LLC 875,645 40,280,000 1.55%
19 River Road Asset Management, LLC 863,127 39,704,000 1.53%
20 ADAGE CAPITAL PARTNERS GP, L.L.C. 825,000 37,950,000 1.46%
21 FMR LLC 822,314 37,827,000 1.45%
22 D. E. Shaw & Co., Inc. 777,627 35,771,000 1.37%
23 GOLDMAN SACHS GROUP INC 715,313 32,905,000 1.26%
24 SAMLYN CAPITAL, LLC 665,385 30,608,000 1.18%
25 MIG Capital, LLC 630,101 28,985,000 1.11%
26 BANK OF AMERICA CORP /DE/ 571,945 26,309,000 1.01%
27 WELLINGTON MANAGEMENT GROUP LLP 507,918 23,364,000 0.90%
28 LOOMIS SAYLES & CO L P 500,733 23,034,000 0.88%
29 INVESTMENT COUNSELORS OF MARYLAND LLC 488,000 22,448,000 0.86%
30 TIMUCUAN ASSET MANAGEMENT INC/FL 429,301 19,748,000 0.76%
31 GEODE CAPITAL MANAGEMENT, LLC 368,468 16,949,000 0.65%
32 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 355,648 16,360,000 0.63%
33 Sandhill Capital Partners LLC 289,452 13,315,000 0.51%
34 NEW YORK STATE COMMON RETIREMENT FUND 279,381 12,852,000 0.49%
35 FRONTIER CAPITAL MANAGEMENT CO LLC 255,200 11,739,000 0.45%
36 CREDIT SUISSE AG/ 248,551 11,433,000 0.44%
37 NORGES BANK 245,459 11,291,000 0.43%
38 NORTHERN TRUST CORP 238,723 10,982,000 0.42%
39 RUSSELL INVESTMENTS GROUP, LTD. 235,913 10,851,000 0.42%
40 Invesco Ltd. 232,587 10,699,000 0.41%
41 PRUDENTIAL FINANCIAL INC 216,282 9,949,000 0.38%
42 PARAMETRIC PORTFOLIO ASSOCIATES LLC 211,681 9,737,000 0.37%
43 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 210,170 9,668,000 0.37%
44 13D Management LLC 199,984 9,199,000 0.35%
45 COMERICA BANK 185,187 8,343,000 0.32%
46 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 179,600 8,262,000 0.32%
47 Bank of New York Mellon Corp 158,557 7,294,000 0.28%
48 SEI INVESTMENTS CO 157,067 7,225,000 0.28%
49 KBC Group NV 149,553 6,879,000 0.26%
50 NATIXIS ADVISORS, LLC 146,444 6,737,000 0.26%
Page 1 of 4

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.