Keystone Acquisition Corp

Q2 2026 vs Q3 2026

Comparing institutional holders between quarters

Compare Detailed Historical Funds Options Short Interest 13D/13G Peers Targeting Trading Summary Profile

Sort by

Alberta Investment Management Corp

UNCHANGED

Shares800,000 from 800,000

Change0 (0%)

Value$8.1M (+$96.0K)

Filed 2026-11-09

Calamos Advisors LLC

UNCHANGED

Shares200,000 from 200,000

Change0 (0%)

Value$2.0M (+$18.0K)

Filed 2026-11-02

Picton Mahoney Asset Management

CLOSED

Shares0 from 400,000

Change-400,000 (-100%)

Value$0 (-$4.0M)

Filed 2026-11-09

ABC Arbitrage SA

CLOSED

Shares0 from 30,000

Change-30,000 (-100%)

Value$0 (-$301.2K)

Filed 2026-10-23

Magnetar Financial LLC

N/A

Shares— from 2,000,000

Change-2,000,000 (-100%)

Value—

AQR Arbitrage LLC

N/A

Shares— from 1,723,275

Change-1,723,275 (-100%)

Value—

LMR Partners LLP

N/A

Shares— from 1,300,000

Change-1,300,000 (-100%)

Value—

Healthcare of Ontario Pension Plan Trust Fund

N/A

Shares— from 1,250,000

Change-1,250,000 (-100%)

Value—

HGC Investment Management Inc.

N/A

Shares— from 800,000

Change-800,000 (-100%)

Value—

Fort Baker Capital Management LP

N/A

Shares— from 600,000

Change-600,000 (-100%)

Value—

BNP Paribas Financial Markets

N/A

Shares— from 526,725

Change-526,725 (-100%)

Value—

Millennium Management LLC

N/A

Shares— from 500,000

Change-500,000 (-100%)

Value—

Radcliffe Capital Management, L.P.

N/A

Shares— from 499,900

Change-499,900 (-100%)

Value—

Centiva Capital, LP

N/A

Shares— from 425,000

Change-425,000 (-100%)

Value—

Decagon Asset Management LLP

N/A

Shares— from 375,000

Change-375,000 (-100%)

Value—

Whitebox Advisors LLC

N/A

Shares— from 350,000

Change-350,000 (-100%)

Value—

Moore Capital Management, LP

N/A

Shares— from 300,000

Change-300,000 (-100%)

Value—

Lineage Point Capital LP

N/A

Shares— from 295,719

Change-295,719 (-100%)

Value—

Rivernorth Capital Management, LLC

N/A

Shares— from 200,000

Change-200,000 (-100%)

Value—

Schonfeld Strategic Advisors LLC

N/A

Shares— from 200,000

Change-200,000 (-100%)

Value—

Toronto Dominion Bank

N/A

Shares— from 199,900

Change-199,900 (-100%)

Value—

Ghisallo Capital Management LLC

N/A

Shares— from 150,000

Change-150,000 (-100%)

Value—

Aristeia Capital, L.L.C.

N/A

Shares— from 144,062

Change-144,062 (-100%)

Value—

DLD Asset Management, LP

N/A

Shares— from 100,000

Change-100,000 (-100%)

Value—

Susquehanna International Group, LLP

N/A

Shares— from 40,000

Change-40,000 (-100%)

Value—

HRT Financial LP

N/A

Shares— from 22,330

Change-22,330 (-100%)

Value—

Clear Street Group Inc.

N/A

Shares— from 20,553

Change-20,553 (-100%)

Value—

Longfellow Investment Management Co LLC

N/A

Shares— from 8,642

Change-8,642 (-100%)

Value—

UBS Group AG

N/A

Shares— from 1,040

Change-1,040 (-100%)

Value—

	Status
Alberta Investment Management Corp	UNCHANGED	800,000	800,000	0	0%	$8.0M	$8.1M	+$96.0K	2026-11-09
Calamos Advisors LLC	UNCHANGED	200,000	200,000	0	0%	$2.0M	$2.0M	+$18.0K	2026-11-02
Picton Mahoney Asset Management	CLOSED	0	400,000	-400,000	-100%	$4.0M	$0	-$4.0M	2026-11-09
ABC Arbitrage SA	CLOSED	0	30,000	-30,000	-100%	$301.2K	$0	-$301.2K	2026-10-23
Magnetar Financial LLC	N/A	—	2,000,000	-2,000,000	-100%	$20.1M	—	—	—
AQR Arbitrage LLC	N/A	—	1,723,275	-1,723,275	-100%	$17.3M	—	—	—
LMR Partners LLP	N/A	—	1,300,000	-1,300,000	-100%	$13.1M	—	—	—
Healthcare of Ontario Pension Plan Trust Fund	N/A	—	1,250,000	-1,250,000	-100%	$12.6M	—	—	—
HGC Investment Management Inc.	N/A	—	800,000	-800,000	-100%	$8.0M	—	—	—
Fort Baker Capital Management LP	N/A	—	600,000	-600,000	-100%	$6.0M	—	—	—
BNP Paribas Financial Markets	N/A	—	526,725	-526,725	-100%	$5.3M	—	—	—
Millennium Management LLC	N/A	—	500,000	-500,000	-100%	$5.0M	—	—	—
Radcliffe Capital Management, L.P.	N/A	—	499,900	-499,900	-100%	$5.0M	—	—	—
Centiva Capital, LP	N/A	—	425,000	-425,000	-100%	$4.3M	—	—	—
Decagon Asset Management LLP	N/A	—	375,000	-375,000	-100%	$3.8M	—	—	—
Whitebox Advisors LLC	N/A	—	350,000	-350,000	-100%	$3.5M	—	—	—
Moore Capital Management, LP	N/A	—	300,000	-300,000	-100%	$3.0M	—	—	—
Lineage Point Capital LP	N/A	—	295,719	-295,719	-100%	$3.0M	—	—	—
Rivernorth Capital Management, LLC	N/A	—	200,000	-200,000	-100%	$2.0M	—	—	—
Schonfeld Strategic Advisors LLC	N/A	—	200,000	-200,000	-100%	$2.0M	—	—	—
Toronto Dominion Bank	N/A	—	199,900	-199,900	-100%	$2.0M	—	—	—
Ghisallo Capital Management LLC	N/A	—	150,000	-150,000	-100%	$1.5M	—	—	—
Aristeia Capital, L.L.C.	N/A	—	144,062	-144,062	-100%	$1.4M	—	—	—
DLD Asset Management, LP	N/A	—	100,000	-100,000	-100%	$1.0M	—	—	—
Susquehanna International Group, LLP	N/A	—	40,000	-40,000	-100%	$401.6K	—	—	—
HRT Financial LP	N/A	—	22,330	-22,330	-100%	$224	—	—	—
Clear Street Group Inc.	N/A	—	20,553	-20,553	-100%	$206.4K	—	—	—
Longfellow Investment Management Co LLC	N/A	—	8,642	-8,642	-100%	$86.8K	—	—	—
UBS Group AG	N/A	—	1,040	-1,040	-100%	$10.4K	—	—	—

Showing 29 of 29 institutions