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GRAN TIERRA ENERGY INC
GRAN TIERRA ENERGY INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q1)
Portfolio Summary: 143 Institutional holders with a total value of $418,004,171.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 19,919,843 54,381,171 13.01%
2 Amber Capital Management LP 17,681,836 48,329,000 11.56%
3 WEST FACE CAPITAL INC. 9,862,101 26,924,000 6.44%
4 CANADA PENSION PLAN INVESTMENT BOARD 7,611,300 20,793,000 4.97%
5 Invesco Ltd. 6,287,416 17,174,000 4.11%
6 JPMORGAN CHASE & CO 5,567,277 15,198,000 3.64%
7 RENAISSANCE TECHNOLOGIES LLC 5,484,700 14,973,000 3.58%
8 Numeric Investors LLC 5,324,436 14,536,000 3.48%
9 FRANKLIN RESOURCES INC 4,767,334 13,015,000 3.11%
10 SCHRODER INVESTMENT MANAGEMENT GROUP 3,602,414 11,960,000 2.86%
11 River Road Asset Management, LLC 4,349,770 11,875,000 2.84%
12 PUBLIC SECTOR PENSION INVESTMENT BOARD 4,022,068 10,988,000 2.63%
13 Grandeur Peak Global Advisors, LLC 3,787,700 10,340,000 2.47%
14 VANGUARD GROUP INC 3,630,905 9,912,000 2.37%
15 NORGES BANK 3,617,386 9,875,000 2.36%
16 WASATCH ADVISORS LP 3,493,092 9,536,000 2.28%
17 WHITEBOX ADVISORS LLC 2,994,194 8,174,000 1.96%
18 BARROW HANLEY MEWHINNEY & STRAUSS LLC 2,774,994 7,576,000 1.81%
19 EdgePoint Investment Group Inc. 2,668,389 7,279,000 1.74%
20 ALLIANCEBERNSTEIN L.P. 2,419,190 6,609,000 1.58%
21 MORGAN STANLEY 2,251,305 6,146,000 1.47%
22 ACADIAN ASSET MANAGEMENT LLC 1,829,278 4,996,000 1.20%
23 WCM INVESTMENT MANAGEMENT, LLC 1,601,517 4,372,000 1.05%
24 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 1,967,133 4,288,000 1.03%
25 Prince Street Capital Management LLC 1,347,000 3,674,000 0.88%
26 TD ASSET MANAGEMENT INC 1,330,320 3,636,000 0.87%
27 DREMAN VALUE MANAGEMENT, L L C 1,117,561 3,051,000 0.73%
28 TWO SIGMA INVESTMENTS, LP 965,850 2,637,000 0.63%
29 SYSTEMATIC FINANCIAL MANAGEMENT LP 958,145 2,615,000 0.63%
30 TWO SIGMA ADVISERS, LP 927,800 2,533,000 0.61%
31 NORTHERN TRUST CORP 865,377 2,363,000 0.57%
32 BNP Paribas Asset Management Holding S.A. 837,509 2,286,000 0.55%
33 AMERIPRISE FINANCIAL INC 811,025 2,215,000 0.53%
34 SUSQUEHANNA INTERNATIONAL GROUP, LLP 779,489 2,129,000 0.51%
35 CREDIT SUISSE AG/ 774,201 2,113,000 0.51%
36 Boston Partners 716,852 1,957,000 0.47%
37 USCA RIA LLC 702,000 1,916,000 0.46%
38 Pinnacle Summer Investments, Inc. 693,850 1,895,000 0.45%
39 K.J. Harrison & Partners Inc 618,500 1,689,000 0.40%
40 RUSSELL FRANK CO/ 617,945 1,687,000 0.40%
41 Cambrian Capital Limited Partnership 616,199 1,682,000 0.40%
42 HBK INVESTMENTS L P 549,883 1,501,000 0.36%
43 Employees Retirement System of Texas 464,000 1,267,000 0.30%
44 HIGHBRIDGE CAPITAL MANAGEMENT LLC 462,012 1,262,000 0.30%
45 CITADEL ADVISORS LLC 437,404 1,194,000 0.29%
46 BANK OF MONTREAL /CAN/ 436,709 1,191,000 0.28%
47 ROYAL BANK OF CANADA 418,872 1,143,000 0.27%
48 PRICE T ROWE ASSOCIATES INC /MD/ 408,060 1,114,000 0.27%
49 SHEPHERD KAPLAN KROCHUK, LLC 391,038 1,069,000 0.26%
50 A.R.T. Advisors, LLC 381,865 1,042,000 0.25%
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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.