Vault-13

SPACSPHERE ACQUISITION CORP SSAC

CL A SHS · Common Stock · CUSIP G8T088109

39 institutional holders +7 vs Q1 2026
14,633,76114.6m shares reported held*
80.4% of all shares outstanding*
$146.0mreported value*
12 new 10 added 3 reduced 5 sold out net bought ≈ $39.9m (+4.0m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 18.2m as of 2026-03-27, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $9.98.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

02040Q1 26: 32Q2 26: 3939Q1 26Q2 26
Numbers
QuarterHolders
Q1 202632
Q2 202639

Biggest buyers

MIZUHO SECURITIES USA LLC Added +1,012,567+1.0m
Crossingbridge Advisors, LLC New +845,112+845.1k
WOLVERINE ASSET MANAGEMENT LLC Added +826,067+826.1k
Westchester Capital Management, LLC New +500,000+500.0k
ARISTEIA CAPITAL, L.L.C. New +402,400+402.4k
SONA ASSET MANAGEMENT (US) LLC New +350,000+350.0k
Magnetar Financial LLC New +300,000+300.0k
GLAZER CAPITAL, LLC Added +214,476+214.5k
Ghisallo Capital Management LLC New +200,000+200.0k
BERKLEY W R CORP Added +195,633+195.6k

Biggest sellers

Lineage Point Capital LP Sold out -570,000-570.0k
Meteora Capital, LLC Sold out -316,717-316.7k
Parallax Volatility Advisers, L.P. Sold out -161,551-161.6k
Shaolin Capital Management LLC Reduced -127,831-127.8k
Schonfeld Strategic Advisors LLC Reduced -83,643-83.6k
ABC ARBITRAGE SA Sold out -40,000-40.0k
HRT FINANCIAL LP Sold out -11,300-11.3k
TrueMark Investments, LLC Reduced -462-462

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Polar Asset Management Partners Inc. 13G · institution new · filed 2026-05-15 8.2% new 1.5m≈ $14.9m 2026-05-15
Yakira Capital Management, Inc. 13G · institution new · filed 2026-04-08 8.2% new 1.5m≈ $14.8m 2026-04-08
HIGHBRIDGE CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-05-15 7.6% new 1.4m≈ $13.9m 2026-05-15
Lighthouse Investment Partners, LLC 13G · institution new · filed 2026-05-14 7.3% new 1.3m≈ $13.4m 2026-05-14
GOLDMAN SACHS GROUP INC 13G · institution new · filed 2026-05-14 7.3% new 1.3m≈ $13.2m 2026-05-14
MIZUHO FINANCIAL GROUP INC 13G · institution new · filed 2026-08-13 5.5% new 1.0m≈ $10.1m 2026-08-13
WOLVERINE ASSET MANAGEMENT LLC 13G · institution -1.2 pts · filed 2026-10-06 5.2% -1.2 pts 954.3k≈ $9.5m 2026-10-06

Fell to 5% or below in the last year: Karpus Management, Inc. (5.0%, 2026-09-04)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MIZUHO SECURITIES USA LLC 0.14% of their portfolio NEW YORK, NY 1,504,0751.5m $14.9m $14.9m 0.14% Added +1.0m +1,012,567
2 Polar Asset Management Partners Inc. 0.27% of their portfolio TORONTO, A6 1,490,0001.5m $14.9m $14.9m 0.27% Unchanged
3 HIGHBRIDGE CAPITAL MANAGEMENT LLC 0.48% of their portfolio NEW YORK, NY 1,425,0001.4m $14.2m $14.2m 0.48% Added +34.9k +34,877
4 Karpus Management, Inc. 0.36% of their portfolio Pittsford, NY 1,248,8751.2m $12.5m $12.5m 0.36% Added +31.7k +31,665
5 WOLVERINE ASSET MANAGEMENT LLC 0.15% of their portfolio CHICAGO, IL 1,163,2301.2m $11.6m $11.6m 0.15% Added +826.1k +826,067
6 Crossingbridge Advisors, LLC 1.49% of their portfolio PLEASANTVILLE, NY 845,112845.1k $8.4m $8.4m 1.49% New
7 BERKLEY W R CORP 0.38% of their portfolio Greenwich, CT 768,983769.0k $7.7m $7.7m 0.38% Added +195.6k +195,633
8 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 517,000517.0k $5.2m $5.2m 0.00% Unchanged
9 GLAZER CAPITAL, LLC 0.13% of their portfolio New York, NY 509,589509.6k $5.1m $5.1m 0.13% Added +214.5k +214,476
10 Westchester Capital Management, LLC 0.25% of their portfolio VALHALLA, NY 500,000500.0k $5.0m $5.0m 0.25% New
11 Linden Advisors LP 0.02% of their portfolio New York, NY 450,000450.0k $4.5m $4.5m 0.02% Unchanged
12 MANGROVE PARTNERS IM, LLC 0.30% of their portfolio Greenwich, CT 450,000450.0k $4.5m $4.5m 0.30% Unchanged
13 ARISTEIA CAPITAL, L.L.C. 0.06% of their portfolio GREENWICH, CT 402,400402.4k $4.0m $4.0m 0.06% New
14 RIVERNORTH CAPITAL MANAGEMENT, LLC 0.17% of their portfolio WEST PALM BEACH, FL 350,000350.0k $3.5m $3.5m 0.17% Unchanged
15 SONA ASSET MANAGEMENT (US) LLC 0.13% of their portfolio NEW YORK, NY 350,000350.0k $3.5m $3.5m 0.13% New
16 Magnetar Financial LLC 0.03% of their portfolio EVANSTON, IL 300,000300.0k $3.0m $3.0m 0.03% New
17 Shaolin Capital Management LLC 0.15% of their portfolio Miami, FL 272,169272.2k $2.7m $2.7m 0.15% Reduced -127.8k -127,831
18 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 271,875271.9k $2.7m $2.7m 0.00% Unchanged
19 Clear Street Group Inc. 0.01% of their portfolio NEW YORK, NY 249,404249.4k $2.5m $2.5m 0.01% Added +183.3k +183,258
20 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 229,356229.4k $2.3m $2.3m 0.00% Unchanged
21 WHITEBOX ADVISORS LLC 0.03% of their portfolio MINNEAPOLIS, MN 212,043212.0k $2.1m $2.1m 0.03% Unchanged
22 Hudson Bay Capital Management LP 0.01% of their portfolio STAMFORD, CT 200,000200.0k $2.0m $2.0m 0.01% Unchanged
23 Ghisallo Capital Management LLC 0.04% of their portfolio BOSTON, MA 200,000200.0k $2.0m $2.0m 0.04% New
24 AQR Arbitrage LLC 0.02% of their portfolio Greenwich, CT 172,992173.0k $1.7m $1.7m 0.02% Added +2.4k +2,352
25 Periscope Capital Inc. 0.20% of their portfolio Toronto, A6 125,000125.0k $1.2m $1.2m 0.20% Unchanged
26 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 100,000100.0k $998.0k $998.0k 0.00% Added +68.6k +68,606
27 Radcliffe Capital Management, L.P. 0.06% of their portfolio BALA CYNWYD, PA 75,00075.0k $748.5k $748.5k 0.06% Unchanged
28 MMCAP International Inc. SPC 0.04% of their portfolio GRAND CAYMAN, E9 50,00050.0k $499.0k $499.0k 0.04% New
29 Virtu Financial LLC 0.01% of their portfolio New York, NY 32,81632.8k $328.0k $328.0k 0.01% New
30 Kepos Capital LP 0.41% of their portfolio NEW YORK, NY 30,00030.0k $299.0k $299.0k 0.41% Unchanged
31 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 29,62829.6k $295.7k $295.7k 0.00% Unchanged
32 TrueMark Investments, LLC 0.03% of their portfolio CHICAGO, IL 25,53825.5k $254.9k $254.9k 0.03% Reduced -462 -462
33 HEIGHTS CAPITAL MANAGEMENT, INC 0.06% of their portfolio SAN FRANCISCO, CA 25,00025.0k $249.5k $249.5k 0.06% New
34 Tuttle Capital Management, LLC 0.13% of their portfolio RIVERSIDE, CT 20,00020.0k $199.6k $199.6k 0.13% New
35 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 16,35716.4k $163.2k $163.2k 0.00% Reduced -83.6k -83,643
36 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 10,24110.2k $102.2k $102.2k 0.00% New
37 L1 Global Manager Pty Ltd 0.08% of their portfolio Melbourne, C3 10,00010.0k $99.8k $99.8k 0.08% Unchanged
38 UBS Group AG 0.00% of their portfolio ZURICH, V8 2,0462.0k $20.4k $20.4k 0.00% New
39 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 3232 $319 $319 0.00% Added +24 +24