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Iron Mountain Inc New
Iron Mountain Inc New . Institutional holdings reported to the SEC.

Institutional Holders (2014Q1)
Portfolio Summary: 382 Institutional holders with a total value of $5,388,443,706.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Capital World Investors 21,109,540 581,990,000 10.80%
2 VANGUARD GROUP INC 12,014,452 331,239,000 6.15%
3 HIGHFIELDS CAPITAL MANAGEMENT LP 9,428,516 259,944,000 4.82%
4 PRICE T ROWE ASSOCIATES INC /MD/ 9,247,528 254,954,000 4.73%
5 SCHOONER CAPITAL CORP 8,251,277 227,488,000 4.22%
6 PARNASSUS INVESTMENTS, LLC 7,173,095 197,762,000 3.67%
7 STATE STREET CORP 6,790,362 187,205,000 3.47%
8 BROOKFIELD Corp /ON/ 5,152,214 142,046,000 2.64%
9 BlackRock Institutional Trust Company, N.A. 4,353,048 120,014,000 2.23%
10 CAPITAL GUARDIAN TRUST CO 3,842,969 105,951,000 1.97%
11 RS INVESTMENT MANAGEMENT CO LLC 3,802,027 104,815,000 1.95%
12 Capital International Investors 3,765,884 103,825,000 1.93%
13 River Road Asset Management, LLC 3,758,254 103,615,000 1.92%
14 GOLDMAN SACHS GROUP INC 3,588,200 98,927,000 1.84% Call
15 FMR LLC 3,319,306 91,514,000 1.70%
16 Bank of New York Mellon Corp 3,279,436 90,414,000 1.68%
17 WASATCH ADVISORS LP 3,124,807 86,151,000 1.60%
18 Invesco Ltd. 2,858,528 78,811,000 1.46%
19 MUNDER CAPITAL MANAGEMENT 2,502,054 68,982,000 1.28%
20 NORTHERN TRUST CORP 2,331,795 64,287,000 1.19%
21 JENNISON ASSOCIATES LLC 2,185,224 60,247,000 1.12%
22 Owl Creek Asset Management, L.P. 2,040,930 56,268,000 1.04%
23 BlackRock Fund Advisors 2,027,261 55,892,000 1.04%
24 Makaira Partners LLC 2,014,549 55,541,000 1.03% SH
25 HIGHFIELDS CAPITAL MANAGEMENT LP 2,000,000 55,140,000 1.02% Call
26 GOLDMAN SACHS GROUP INC 1,976,693 54,497,000 1.01%
27 Westchester Capital Management, LLC 1,716,800 47,332,000 0.88% Put
28 Allianz Asset Management GmbH 1,703,760 46,973,000 0.87%
29 Westchester Capital Management, LLC 1,507,003 41,548,000 0.77%
30 NORGES BANK 1,402,840 38,676,000 0.72%
31 WELCH & FORBES LLC 1,266,452 34,917,000 0.65%
32 D. E. Shaw & Co., Inc. 1,237,727 34,124,000 0.63%
33 GEODE CAPITAL MANAGEMENT, LLC 1,234,225 34,013,000 0.63%
34 TOBAM 1,220,582 33,651,000 0.62%
35 GOLDMAN SACHS GROUP INC 1,210,200 33,365,000 0.62% Put
36 GW CAPITAL INC 1,205,609 33,239,000 0.62%
37 MORGAN STANLEY 1,195,988 32,974,000 0.61%
38 BlackRock Group LTD 1,071,536 29,542,000 0.55%
39 CONFLUENCE INVESTMENT MANAGEMENT LLC 1,057,947 29,168,000 0.54%
40 JET CAPITAL INVESTORS L P 1,039,700 28,665,000 0.53% Put
41 MACKENZIE FINANCIAL CORP 1,014,634 27,973,000 0.52%
42 Stonerise Capital Management, LLC 1,000,000 27,570,000 0.51%
43 MILLENNIUM MANAGEMENT LLC 913,537 25,186,000 0.47%
44 FARALLON CAPITAL MANAGEMENT LLC 895,000 24,675,000 0.46%
45 CREDIT SUISSE AG/ 820,939 22,634,000 0.42%
46 NOMURA HOLDINGS INC 794,800 21,887,000 0.41% Call
47 Legal & General Group Plc 784,057 21,616,000 0.40%
48 RENAISSANCE TECHNOLOGIES LLC 751,843 20,728,000 0.38%
49 TIAA CREF INVESTMENT MANAGEMENT LLC 700,829 19,322,000 0.36%
50 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 656,527 18,021,000 0.33%
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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.