SSAC — Spacsphere Acquisition Corp Institutional Holders · Q2 2026

Name: Who Owns SSAC? 44 Institutions Hold $146M (Q2 2026)
Creator: ko.io

Who owns Spacsphere Acquisition Corp (SSAC)? 44 institutions reported holding $145.98M in SEC 13F filings for Q2 2026 (period ended 2026-06-30). Largest holders: Mizuho Securities USA LLC ($14.9M), Polar Asset Management Partners Inc. ($14.9M), Highbridge Capital Management LLC ($14.2M).

Rank	Institution	Value	Shares	Change
1	MIZUHO SECURITIES USA LLC	$14.9M	1.5M	Added
2	Polar Asset Management Partners Inc.	$14.9M	1.5M	Hold
3	HIGHBRIDGE CAPITAL MANAGEMENT LLC	$14.2M	1.4M	Added
4	Karpus Management, Inc.	$12.5M	1.2M	Added
5	WOLVERINE ASSET MANAGEMENT LLC	$11.6M	1.2M	Added
6	Crossingbridge Advisors, LLC	$8.4M	845,112	New
7	BERKLEY W R CORP	$7.7M	768,983	Added
8	D. E. Shaw & Co., Inc.	$5.2M	517,000	Hold
9	GLAZER CAPITAL, LLC	$5.1M	509,589	Added
10	Westchester Capital Management, LLC	$5.0M	500,000	New
11	Linden Advisors LP	$4.5M	450,000	Hold
12	MANGROVE PARTNERS IM, LLC	$4.5M	450,000	Hold
13	ARISTEIA CAPITAL, L.L.C.	$4.0M	402,400	New
14	RIVERNORTH CAPITAL MANAGEMENT, LLC	$3.5M	350,000	Hold
15	SONA ASSET MANAGEMENT (US) LLC	$3.5M	350,000	New
16	Magnetar Financial LLC	$3.0M	300,000	New
17	Shaolin Capital Management LLC	$2.7M	272,169	Trimmed
18	TWO SIGMA INVESTMENTS, LP	$2.7M	271,875	Hold
19	Clear Street Group Inc.	$2.5M	249,404	Added
20	BNP PARIBAS FINANCIAL MARKETS	$2.3M	229,356	Hold
21	WHITEBOX ADVISORS LLC	$2.1M	212,043	Hold
22	Hudson Bay Capital Management LP	$2.0M	200,000	Hold
23	Ghisallo Capital Management LLC	$2.0M	200,000	New
24	AQR Arbitrage LLC	$1.7M	172,992	Added
25	Periscope Capital Inc.	$1.2M	125,000	Hold

Source: SEC Form 13F filings · as of 2026-06-30