Company · Ownership research

Telesat Corp TSAT

CIK 0001845840 · CUSIP 879512309

Insider tradingInitial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 879512309 (TSAT), not CUSIP 879512909 (TSAT), CUSIP 879512959 (TSAT), and does not merge CUSIPs.

This page lists the top 20 of 65 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	MHR FUND MANAGEMENT LLC CIK 1277742 · View history	$477.93M 18,035,092 shares	46.81%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
02	Public Sector Pension Investment Board CIK 1396318 · View history	$475.50M 18,211,203 shares	1.75%	0(0.00%)Unchanged	SEC filing ↗ Nov 6, 2025	▾
03	GAMCO INVESTORS, INC. ET AL CIK 807249 · View history	$47.35M 1,786,908 shares	0.46%	-73.06K(-3.90%)Reduced	SEC filing ↗ Nov 12, 2025	▾
04	Heard Capital LLC CIK 1796409 · Amended · View history	$39.02M 1,472,335 shares	1.89%	-45.38K(-3.00%)Reduced	SEC filing ↗ Nov 14, 2025	▾
05	Rubric Capital Management LP CIK 1687509 · View history	$22.36M 843,781 shares	0.30%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
06	GABELLI FUNDS LLC CIK 1081407 · View history	$18.95M 715,279 shares	0.13%	-9.85K(-1.40%)Reduced	SEC filing ↗ Nov 12, 2025	▾
07	LM Asset Management Inc. CIK 2057190 · View history	$11.82M 452,450 shares	9.39%	-14.00K(-3.00%)Reduced	SEC filing ↗ Nov 14, 2025	▾
08	PenderFund Capital Management Ltd. CIK 1706164 · View history	$10.51M 409,753 shares	1.77%	+309.15K(+307.30%)Added	SEC filing ↗ Nov 14, 2025	▾
09	NEXPOINT ASSET MANAGEMENT, L.P. CIK 1469877 · View history	$10.51M 396,623 shares	0.93%	-137.68K(-25.80%)Reduced	SEC filing ↗ Nov 14, 2025	▾
10	Vestcor Inc CIK 1536925 · View history	$4.64M 175,000 shares	0.14%	+50.00K(+40.00%)Added	SEC filing ↗ Nov 13, 2025	▾
11	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$3.11M 117,553 shares	0.01%	+29.52K(+33.50%)Added	SEC filing ↗ Nov 13, 2025	▾
12	PCJ Investment Counsel Ltd. CIK 1426318 · View history	$2.93M 112,180 shares	0.81%	-1.67K(-1.50%)Reduced	SEC filing ↗ Nov 13, 2025	▾
13	Polar Asset Management Partners Inc. CIK 1326389 · Amended · View history	$2.78M 105,225 shares	0.06%	+47.73K(+83.00%)Added	SEC filing ↗ Dec 1, 2025	▾
14	Caption Management, LLC CIK 1706766 · View history	$2.30M 86,835 shares	0.13%	-26.77K(-23.60%)Reduced	SEC filing ↗ Nov 14, 2025	▾
15	GABELLI & Co INVESTMENT ADVISERS, INC. CIK 932724 · View history	$1.70M 64,011 shares	0.27%	-15.15K(-19.10%)Reduced	SEC filing ↗ Nov 12, 2025	▾
16	CITADEL ADVISORS LLC CIK 1423053 · View history	$1.69M 63,737 shares	0.00%	+52.16K(+450.60%)Added	SEC filing ↗ Nov 14, 2025	▾
17	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$1.63M 61,646 shares	0.00%	-6.85K(-10.00%)Reduced	SEC filing ↗ Nov 13, 2025	▾
18	K.J. Harrison & Partners Inc CIK 1418359 · View history	$1.61M 58,000 shares	0.23%	+32.60K(+128.30%)Added	SEC filing ↗ Nov 12, 2025	▾
19	GROUP ONE TRADING LLC CIK 932540 · View history	$1.41M 53,214 shares	0.04%	-10.65K(-16.70%)Reduced	SEC filing ↗ Nov 12, 2025	▾
20	MORGAN STANLEY CIK 895421 · Amended · View history	$1.10M 41,676 shares	0.00%	+4.22K(+11.30%)Added	SEC filing ↗ May 27, 2026	▾

Showing 20 / 65 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

43,826,385

Not deduplicated across managers

Disclosed value

$1.15B

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.

Telesat Corp · Q3 2025

Explore all 65 reporting institutions.

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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.