Company · Ownership research

GRAN TIERRA ENERGY INC. GTE

CIK 0001273441 · CUSIP 38500T200

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 38500T200 (GTE), not CUSIP 38500T900 (GTE), CUSIP 38500T950 (GTE), CUSIP 38500T101 (GTE), and does not merge CUSIPs.

This page lists the top 20 of 69 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Equinox Partners Investment Management LLC CIK 938552 · View history	$39.88M 6,381,471 shares	18.78%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
02	LM Asset Management Inc. CIK 2057190 · View history	$27.28M 4,365,420 shares	18.88%	+320.00K(+7.90%)Added	SEC filing ↗ Aug 11, 2026	▾
03	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$10.64M 1,702,578 shares	0.00%	+93.43K(+5.80%)Added	SEC filing ↗ Aug 12, 2026	▾
04	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$8.66M 1,385,858 shares	0.01%	+426.94K(+44.50%)Added	SEC filing ↗ Aug 14, 2026	▾
05	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$7.24M 1,158,224 shares	0.00%	+58.02K(+5.30%)Added	SEC filing ↗ Aug 14, 2026	▾
06	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$6.00M 960,360 shares	0.01%	+183.68K(+23.60%)Added	SEC filing ↗ Aug 13, 2026	▾
07	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$5.02M 803,763 shares	0.00%	+199.39K(+33.00%)Added	SEC filing ↗ Aug 13, 2026	▾
08	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$3.60M 575,603 shares	0.06%	+19.69K(+3.50%)Added	SEC filing ↗ Aug 14, 2026	▾
09	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$3.29M 523,877 shares	0.01%	+117.38K(+28.90%)Added	SEC filing ↗ Aug 13, 2026	▾
10	UBS Group AG CIK 1610520 · View history	$3.16M 505,894 shares	0.00%	+82.95K(+19.60%)Added	SEC filing ↗ Aug 13, 2026	▾
11	BNP PARIBAS FINANCIAL MARKETS CIK 1166588 · View history	$2.92M 467,826 shares	0.00%	+125.11K(+36.50%)Added	SEC filing ↗ Aug 13, 2026	▾
12	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$2.73M 437,209 shares	0.00%	+202.36K(+86.20%)Added	SEC filing ↗ Aug 11, 2026	▾
13	MORGAN STANLEY CIK 895421 · View history	$2.57M 411,141 shares	0.00%	+163.04K(+65.70%)Added	SEC filing ↗ Aug 13, 2026	▾
14	CITADEL ADVISORS LLC CIK 1423053 · Amended · View history	$2.53M 404,578 shares	0.00%	+20.85K(+5.40%)Added	SEC filing ↗ Sep 2, 2026	▾
15	Empowered Funds, LLC CIK 1592828 · View history	$2.25M 360,592 shares	0.01%	+39.00K(+12.10%)Added	SEC filing ↗ Aug 17, 2026	▾
16	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$2.08M 333,190 shares	0.00%	+83.15K(+33.30%)Added	SEC filing ↗ Aug 14, 2026	▾
17	JPMORGAN CHASE & CO CIK 19617 · View history	$1.74M 280,682 shares	0.00%	+3.47K(+1.30%)Added	SEC filing ↗ Aug 12, 2026	▾
18	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$1.13M 180,984 shares	0.00%	+180.98KNew	SEC filing ↗ Aug 11, 2026	▾
19	Quadrature Capital Ltd CIK 1651424 · View history	$1.01M 160,292 shares	0.01%	-15.31K(-8.70%)Reduced	SEC filing ↗ Aug 7, 2026	▾
20	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$891.00K 143,614 shares	0.00%	+143.61KNew	SEC filing ↗ Aug 13, 2026	▾

Showing 20 / 69 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

22,930,190

Not deduplicated across managers

Disclosed value

$143.33M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

GRAN TIERRA ENERGY INC. · Q2 2026

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.