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PIONEER NAT RES CO
PIONEER NAT RES CO. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 621 Institutional holders with a total value of $18,528,811,404.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLINGTON MANAGEMENT GROUP LLP 10,709,093 1,342,705,000 7.25%
2 VIKING GLOBAL INVESTORS LP 9,371,105 1,174,949,000 6.34%
3 VANGUARD GROUP INC 9,321,516 1,168,731,000 6.31%
4 Capital World Investors 9,206,309 1,154,287,000 6.23%
5 STATE STREET CORP 8,699,750 1,090,780,000 5.89%
6 SPO ADVISORY CORP 7,296,564 914,843,000 4.94%
7 JPMORGAN CHASE & CO 4,545,570 569,923,000 3.08%
8 FMR LLC 4,489,947 562,949,000 3.04%
9 BlackRock Institutional Trust Company, N.A. 3,841,932 481,701,000 2.60%
10 Neuberger Berman Group LLC 3,692,646 462,983,000 2.50%
11 CITADEL ADVISORS LLC 3,210,041 402,475,000 2.17%
12 BlackRock Fund Advisors 2,707,204 339,429,000 1.83%
13 PRICE T ROWE ASSOCIATES INC /MD/ 2,456,646 308,014,000 1.66%
14 LONE PINE CAPITAL LLC 2,395,261 300,318,000 1.62%
15 BLACKROCK ADVISORS LLC 2,309,085 289,513,000 1.56%
16 MILLENNIUM MANAGEMENT LLC 2,161,452 271,003,000 1.46%
17 GOLDMAN SACHS GROUP INC 2,003,633 251,216,000 1.36%
18 Bank of New York Mellon Corp 1,970,049 247,005,000 1.33%
19 BlackRock Group LTD 1,938,532 243,052,000 1.31%
20 TIAA CREF INVESTMENT MANAGEMENT LLC 1,848,385 231,751,000 1.25%
21 NORTHERN TRUST CORP 1,626,354 203,913,000 1.10%
22 VAN ECK ASSOCIATES CORP 1,600,504 200,671,000 1.08%
23 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,221,000 153,089,000 0.83% Put
24 GEODE CAPITAL MANAGEMENT, LLC 1,192,582 149,217,000 0.81%
25 TEACHERS ADVISORS, LLC 1,149,105 144,075,000 0.78%
26 NORGES BANK 1,134,106 142,194,000 0.77%
27 Invesco Ltd. 1,078,354 135,203,000 0.73%
28 Aristotle Capital Management, LLC 958,303 120,152,000 0.65%
29 VIRTUS CAPITAL ADVISERS, LLC 924,275 115,886,000 0.63%
30 SUSQUEHANNA INTERNATIONAL GROUP, LLP 907,600 113,795,000 0.61% Call
31 BARCLAYS PLC 789,400 98,676,000 0.53% Put
32 BlackRock Investment Management, LLC 665,781 83,476,000 0.45%
33 DIMENSIONAL FUND ADVISORS LP 590,675 74,057,000 0.40%
34 Legal & General Group Plc 589,281 73,881,000 0.40%
35 ADAGE CAPITAL PARTNERS GP, L.L.C. 580,300 72,758,000 0.39%
36 FRONTIER INVESTMENT MGMT CO 569,573 71,413,000 0.39%
37 STELLIAM INVESTMENT MANAGEMENT, LP 550,000 68,959,000 0.37%
38 PUTNAM INVESTMENTS LLC 519,944 65,191,000 0.35%
39 Magnetar Financial LLC 516,636 64,776,000 0.35%
40 WADDELL & REED FINANCIAL INC 509,130 63,835,000 0.34%
41 UBS Group AG 500,500 62,753,000 0.34% Call
42 Sumitomo Mitsui Trust Group, Inc. 498,732 62,077,000 0.34%
43 MORGAN STANLEY 491,810 61,663,000 0.33%
44 Alken Asset Management Ltd 484,113 60,698,000 0.33%
45 STEADFAST CAPITAL MANAGEMENT LP 462,941 58,044,000 0.31%
46 ROYAL BANK OF CANADA 462,197 57,949,000 0.31%
47 LAZARD ASSET MANAGEMENT LLC 452,697 56,758,000 0.31%
48 NEW YORK STATE COMMON RETIREMENT FUND 441,992 55,417,000 0.30%
49 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 436,562 54,735,000 0.30%
50 WEITZ INVESTMENT MANAGEMENT, INC. 432,348 54,208,000 0.29%
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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.