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 62 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	$22.17M 5,097,688 shares	11.97%	0(0.00%)Unchanged	SEC filing ↗ Nov 13, 2025	▾
02	LM Asset Management Inc. CIK 2057190 · View history	$12.14M 2,791,800 shares	9.65%	+846.00K(+43.50%)Added	SEC filing ↗ Nov 14, 2025	▾
03	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$6.60M 1,517,363 shares	0.00%	+107.78K(+7.60%)Added	SEC filing ↗ Nov 12, 2025	▾
04	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$3.48M 799,880 shares	0.00%	-29.70K(-3.60%)Reduced	SEC filing ↗ Nov 13, 2025	▾
05	RWC Asset Management LLP CIK 1520478 · View history	$3.32M 772,507 shares	0.16%	0(0.00%)Unchanged	SEC filing ↗ Oct 27, 2025	▾
06	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$2.41M 554,262 shares	0.05%	+31.80K(+6.10%)Added	SEC filing ↗ Nov 14, 2025	▾
07	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$1.61M 375,299 shares	0.01%	+34.70K(+10.20%)Added	SEC filing ↗ Nov 13, 2025	▾
08	BlackRock, Inc. CIK 2012383 · View history	$1.53M 352,449 shares	0.00%	+164.54K(+87.60%)Added	SEC filing ↗ Nov 12, 2025	▾
09	Empowered Funds, LLC CIK 1592828 · View history	$1.21M 279,159 shares	0.01%	+22.36K(+8.70%)Added	SEC filing ↗ Nov 13, 2025	▾
10	RWC ASSET ADVISORS (US) LLC CIK 1638081 · View history	$971.94K 226,147 shares	0.16%	0(0.00%)Unchanged	SEC filing ↗ Oct 27, 2025	▾
11	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$817.22K 187,866 shares	0.00%	-25.07K(-11.80%)Reduced	SEC filing ↗ Nov 14, 2025	▾
12	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$716.18K 168,883 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
13	GSA CAPITAL PARTNERS LLP CIK 1362033 · View history	$633.00K 145,478 shares	0.05%	+145.48KNew	SEC filing ↗ Nov 7, 2025	▾
14	Cubist Systematic Strategies, LLC CIK 1603465 · View history	$587.05K 134,953 shares	0.01%	+60.17K(+80.40%)Added	SEC filing ↗ Nov 14, 2025	▾
15	Sanctuary Advisors, LLC CIK 1777271 · Amended · View history	$538.10K 123,702 shares	0.00%	+9.18K(+8.00%)Added	SEC filing ↗ Jan 13, 2026	▾
16	UBS Group AG CIK 1610520 · View history	$531.72K 122,235 shares	0.00%	-9.91K(-7.50%)Reduced	SEC filing ↗ Nov 13, 2025	▾
17	MORGAN STANLEY CIK 895421 · Amended · View history	$528.30K 121,449 shares	0.00%	+22.53K(+22.80%)Added	SEC filing ↗ May 27, 2026	▾
18	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$454.40K 104,459 shares	0.00%	+77.37K(+285.60%)Added	SEC filing ↗ Nov 14, 2025	▾
19	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$447.71K 102,921 shares	0.00%	-1.07K(-1.00%)Reduced	SEC filing ↗ Nov 14, 2025	▾
20	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$433.50K 99,654 shares	0.00%	+46.64K(+88.00%)Added	SEC filing ↗ Nov 14, 2025	▾

Showing 20 / 62 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

15,358,029

Not deduplicated across managers

Disclosed value

$66.72M

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. · Q3 2025

Explore all 62 reporting institutions.

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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.