13F Insight
DOSSIER · 13F Holders · Q2 2026

SPACSPHERE ACQUISITION CORP

34 institutions still hold SPACSPHERE ACQUISITION CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G8T088109·34 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$124M
visible holders
Holders
34
filers reporting
Concentration
11.98%
MIZUHO SECURITIES USA LLC #1
top holder share
AI Holders Summary · Q2 2026

34 institutions reported SPACSPHERE ACQUISITION CORP in Q2 2026. MIZUHO SECURITIES USA LLC leads at 12.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
MIZUHO SECURITIES USA LLC
CIK 0000812291
$15M1.5M0.14%Q2 202602
Polar Asset Management Partners Inc.
CIK 0001326389
$15M1.5M0.24%Q2 202603
HIGHBRIDGE CAPITAL MANAGEMENT LLC
CIK 0000919185
$14M1.4M0.35%Q2 202604
Karpus Management, Inc.
CIK 0001048703
$12M1.2M0.38%Q1 202605
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$12M1.2M0.10%Q2 202606
Crossingbridge Advisors, LLC
CIK 0001770024
$8M845K1.49%Q2 202607
BERKLEY W R CORP
CIK 0000011544
$8M769K0.35%Q2 202608
Westchester Capital Management, LLC
CIK 0001512805
$5M500K0.24%Q2 202609
LINDEN ADVISORS LP
CIK 0001279396
$4M450K0.02%Q2 202610
MANGROVE PARTNERS IM, LLC
CIK 0001535392
$4M450K0.29%Q2 202611
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$4M402K0.05%Q2 202612
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$3M350K0.17%Q1 202613
GLAZER CAPITAL, LLC
CIK 0001076809
$3M295K0.06%Q1 202614
Shaolin Capital Management LLC
CIK 0001766806
$3M272K0.13%Q2 202615
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$3M272K0.00%Q2 202616
Clear Street Group Inc.
CIK 0001881567
$2M249K0.01%Q2 202617
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$2M229K0.00%Q2 202618
WHITEBOX ADVISORS LLC
CIK 0001257391
$2M212K0.03%Q2 202619
Ghisallo Capital Management LLC
CIK 0001825214
$2M200K0.04%Q2 202620
Hudson Bay Capital Management LP
CIK 0001393825
$2M200K0.01%Q2 2026
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