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Rubico Inc.: which funds bought and sold

Institutions that bought and sold Rubico 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, 2 institutions that filed 13F reports for both quarters added to or opened positions in Rubico, and 0 cut or closed them. Together they added a net 38K shares, — on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 30K shares; index fund managers held the same number of shares overall. 2 opened a new position and 0 sold out entirely.

Bought, Q2 2026 2 institutions, 2 of them new holders Sold, Q2 2026 0 institutions, 0 of them sold out
Net change, all compared +38K shares (—)
Net change, active managers +30K shares (—), 1 bought, 0 sold

Buyers versus sellers

institutions compared, 2
Active managers and hedge funds 1 bought · 0 sold · +30K
Index fund managers 0 bought · 0 sold · 0
Other institutions 1 bought · 0 sold · +8,211

Biggest buyers

by change in shares held
Institution Change in shares Shares June 30, 2026 Value
Cable Car Capital, LP Hedge fund +30K New position 30K $162,900
UBS Group AG +8,211 New position 8,211 $44,586

Biggest sellers

by change in shares held
Institution Change in shares Shares June 30, 2026 Value
No institution cut its holding.

New positions

largest by value
InstitutionSharesValue June 30, 2026
Cable Car Capital, LPHedge fund 30K $162,900
UBS Group AG 8,211 $44,586

Sold out

largest by value
InstitutionSharesValue March 31, 2026
No institution sold its whole holding.

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
2
Ten largest holders
100.0%
of 13F-reported shares
Index fund managers
0.0%
of 13F-reported shares
Active managers and hedge funds
78.5%
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 1 0 1 0 +30K —
Index fund managers 0 0 0 0 0 —
Other institutions 1 0 1 0 +8,211 —

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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