undamentalytics Newsletter

Spacsphere Acquisition Corp.: which funds bought and sold

Institutions that bought and sold Spacsphere Acquisition shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 22 institutions that filed 13F reports for both quarters added to or opened positions in Spacsphere Acquisition, and 8 cut or closed them. Together they added a net 4.0M shares, +37.6% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.7M shares (+47.4%); index fund managers held the same number of shares overall. 12 opened a new position and 5 sold out entirely.

Bought, Q2 2026 22 institutions, 12 of them new holders Sold, Q2 2026 8 institutions, 5 of them sold out
Net change, all compared +4.0M shares (+37.6%)
Net change, active managers +1.7M shares (+47.4%), 6 bought, 1 sold

Buyers versus sellers

institutions compared, 44
Active managers and hedge funds 6 bought · 1 sold · +1.7M
Index fund managers 0 bought · 0 sold · 0
Other institutions 16 bought · 7 sold · +2.3M

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
Mizuho Securities Usa LLC +1.0M +206.0% 1.5M $14.9M
Crossingbridge Advisors, LLC +845K New position 845K $8.4M
Wolverine Asset Management LLC +826K +245.0% 1.2M $11.6M
Westchester Capital Management, LLC Hedge fund +500K New position 500K $5M
Aristeia Capital, L.L.C. Hedge fund +402K New position 402K $4M
Sona Asset Management (US) LLC Active manager +350K New position 350K $3.5M
Magnetar Financial LLC Hedge fund +300K New position 300K $3M
Glazer Capital, LLC +214K +72.7% 510K $5.1M
Ghisallo Capital Management LLC Hedge fund +200K New position 200K $2M
Berkley W R Corp +196K +34.1% 769K $7.7M
Clear Street Group Inc. +183K +277.1% 249K $2.5M
Toronto Dominion Bank +69K +218.5% 100K $998,000
Mmcap International Inc. Spc +50K New position 50K $499,000
Highbridge Capital Management LLC Hedge fund +35K +2.5% 1.4M $14.2M
Virtu Financial LLC +33K New position 33K $328,000
Karpus Management, Inc. +32K +2.6% 1.2M $12.5M
Heights Capital Management, Inc +25K New position 25K $249,500
Tuttle Capital Management, LLC +20K New position 20K $199,600
Susquehanna International Group, LLP +10K New position 10K $102,205
AQR Arbitrage LLC +2,352 +1.4% 173K $1.7M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Lineage Point Capital LP −570K Sold out 0 —
Meteora Capital, LLC −317K Sold out 0 —
Parallax Volatility Advisers, L.P. −162K Sold out 0 —
Shaolin Capital Management LLC −128K −32.0% 272K $2.7M
Schonfeld Strategic Advisors LLC Hedge fund −84K −83.6% 16K $163,242
Abc Arbitrage SA −40K Sold out 0 —
HRT Financial LP −11K Sold out 0 —
Truemark Investments, LLC −462 −1.8% 26K $254,869

New positions

largest by value
InstitutionSharesValue June 30, 2026
Crossingbridge Advisors, LLC 845K $8.4M
Westchester Capital Management, LLCHedge fund 500K $5M
Aristeia Capital, L.L.C.Hedge fund 402K $4M
Sona Asset Management (US) LLCActive manager 350K $3.5M
Magnetar Financial LLCHedge fund 300K $3M
Ghisallo Capital Management LLCHedge fund 200K $2M
Mmcap International Inc. Spc 50K $499,000
Virtu Financial LLC 33K $328,000
Heights Capital Management, Inc 25K $249,500
Tuttle Capital Management, LLC 20K $199,600

Sold out

largest by value
InstitutionSharesValue March 31, 2026
Lineage Point Capital LP 570K $5.6M
Meteora Capital, LLC 317K $3.1M
Parallax Volatility Advisers, L.P. 162K $1.6M
Abc Arbitrage SA 40K $396,000
HRT Financial LP 11K $111,000

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
39
Ten largest holders
68.1%
of 13F-reported shares
Index fund managers
0.2%
of 13F-reported shares
Active managers and hedge funds
36.2%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 6 1 5 0 +1.7M +47.4%
Index fund managers 0 0 0 0 0 0.0%
Other institutions 16 7 7 5 +2.3M +32.7%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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