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

Institutional Holders (2015Q1)
Portfolio Summary: 598 Institutional holders with a total value of $23,893,603,081.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRICE T ROWE ASSOCIATES INC /MD/ 11,849,054 1,937,439,000 8.11%
2 WELLINGTON MANAGEMENT GROUP LLP 10,779,316 1,762,525,000 7.38%
3 Capital World Investors 10,012,169 1,637,090,000 6.85%
4 VANGUARD GROUP INC 8,745,800 1,430,026,000 5.98%
5 STATE STREET CORP 8,193,847 1,339,781,000 5.61%
6 SPO ADVISORY CORP 7,350,889 1,201,943,000 5.03%
7 VIKING GLOBAL INVESTORS LP 5,809,207 949,863,000 3.98%
8 FMR LLC 4,473,627 731,482,000 3.06%
9 Neuberger Berman Group LLC 4,375,773 715,483,000 2.99%
10 BlackRock Institutional Trust Company, N.A. 3,831,358 626,465,000 2.62%
11 BAUPOST GROUP LLC/MA 3,166,937 517,826,000 2.17%
12 WELLS FARGO & COMPANY/MN 3,128,577 511,565,000 2.14%
13 GOLDMAN SACHS GROUP INC 2,921,236 477,651,000 2.00%
14 JPMORGAN CHASE & CO 2,885,811 471,862,000 1.97%
15 BlackRock Fund Advisors 2,014,854 329,449,000 1.38%
16 NORTHERN TRUST CORP 1,854,309 303,198,000 1.27%
17 Bank of New York Mellon Corp 1,852,985 302,980,000 1.27%
18 BlackRock Group LTD 1,745,684 285,437,000 1.19%
19 TIAA CREF INVESTMENT MANAGEMENT LLC 1,602,879 262,087,000 1.10%
20 VAN ECK ASSOCIATES CORP 1,525,616 249,453,000 1.04%
21 DEUTSCHE BANK AG\ 1,378,027 225,316,000 0.94%
22 PointState Capital LP 1,296,617 212,010,000 0.89%
23 BLACKROCK ADVISORS LLC 1,191,103 194,757,000 0.82%
24 Invesco Ltd. 1,143,734 187,012,000 0.78%
25 CITADEL ADVISORS LLC 1,132,067 185,104,000 0.77%
26 GEODE CAPITAL MANAGEMENT, LLC 1,108,804 181,002,000 0.76%
27 NORGES BANK 1,063,308 173,861,000 0.73%
28 Salzman & Co., Inc. 958,920 156,793,000 0.66%
29 SUSQUEHANNA INTERNATIONAL GROUP, LLP 895,200 146,375,000 0.61% Call
30 Aristotle Capital Management, LLC 890,134 145,546,000 0.61%
31 SUSQUEHANNA INTERNATIONAL GROUP, LLP 859,700 140,570,000 0.59% Put
32 BLAIR WILLIAM & CO/IL 794,183 129,857,000 0.54%
33 BlackRock Investment Management, LLC 753,500 123,205,000 0.52%
34 FRONTIER INVESTMENT MGMT CO 622,593 107,572,000 0.45%
35 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 654,983 107,096,269 0.45%
36 Magnetar Financial LLC 576,636 94,286,000 0.39%
37 Legal & General Group Plc 547,253 89,484,000 0.37%
38 WEITZ INVESTMENT MANAGEMENT, INC. 527,311 86,221,000 0.36%
39 NEW YORK STATE COMMON RETIREMENT FUND 503,566 82,338,000 0.34%
40 ADVISORY RESEARCH INC 484,757 79,263,000 0.33%
41 Sumitomo Mitsui Trust Group, Inc. 475,795 77,797,000 0.33%
42 Allianz Asset Management GmbH 467,658 76,467,000 0.32%
43 TEACHERS ADVISORS, LLC 462,529 75,628,000 0.32%
44 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 456,139 74,585,000 0.31%
45 REAVES W H & CO INC 454,255 74,275,000 0.31%
46 KGH Ltd 448,381 73,315,000 0.31%
47 AVENIR CORP 427,964 69,976,000 0.29%
48 MILLENNIUM MANAGEMENT LLC 420,351 68,732,000 0.29%
49 BlackRock Finance, Inc. 416,922 68,171,000 0.29%
50 CREDIT SUISSE AG/ 414,023 67,697,000 0.28%
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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.