Jane Street’s Rubico Inc RUBI Stock Holding History

Jane Street’s Portfolio RUBI Stock Details RUBI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-17	Closed	-$34.6K	–	13550
2025 Q4	$34.6K	Buy	+17	New	+$770K	﹤0.01%	10612

Jane Street's RUBI Position: Q1 2026 in Review

Jane Street sold out of Rubico Inc (RUBI) in Q1 2026, closing a stake of 17 shares — an estimated $34.6K sold.

Jane Street first reported a position in RUBI in Q4 2025 and held it in 1 quarter. The position peaked at $34.6K in Q4 2025. 0 funds tracked by Wall St. Rank hold RUBI as of Q1 2026.

Jane Street reported no remaining Rubico Inc position as of Q1 2026 after selling out during the quarter.
Jane Street sold 17 Rubico Inc shares in Q1 2026, an estimated $34.6K.
Jane Street first reported a position in Rubico Inc in Q4 2025 and held it in 1 quarter.
Jane Street's Rubico Inc position peaked at $34.6K in Q4 2025.
0 funds tracked by Wall St. Rank held Rubico Inc as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.