Jane Street’s Calamos Bitcoin Structured Alt Protection ETF - October CBOO Stock Holding History

Jane Street’s Portfolio CBOO Stock Details CBOO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$658K	Buy	26,873 +6,073	+29%	+$149K	﹤0.01%	7414
2026 Q1	$507K	Sell	20,800 -10,072	-33%	-$246K	﹤0.01%	7998
2025 Q4	$755K	Buy	+30,872	New	+$763K	﹤0.01%	6764

Other funds holding CBOO

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

Calamos Advisors Naperville, Illinois $30.1B AUM 30.03% 1-Year Est. Return

RWA

Rooted Wealth Advisors Bourbonnais, Illinois $408M AUM 18.96% 1-Year Est. Return

Harbour Investments Madison, Wisconsin $7.43B AUM 24.49% 1-Year Est. Return

Ankerstar Wealth Leander, Texas $119M AUM

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

BFS

Burkett Financial Services Rock Hill, South Carolina $320M AUM 19.24% 1-Year Est. Return

Jane Street's CBOO Position: Q2 2026 in Review

Jane Street increased its Calamos Bitcoin Structured Alt Protection ETF - October (CBOO) stake by 29% in Q2 2026, buying an estimated $149K and bringing the position to 26,873 shares worth $658K. The position accounts for ﹤0.01% of the portfolio, ranked #7414.

Jane Street first reported a position in CBOO in Q4 2025 and has held it in 3 quarters since. The position peaked at $755K in Q4 2025. 8 funds tracked by Wall St. Rank hold CBOO as of Q2 2026.

Jane Street held 26,873 shares of Calamos Bitcoin Structured Alt Protection ETF - October worth $658K as of Q2 2026.
Jane Street bought 6,073 Calamos Bitcoin Structured Alt Protection ETF - October shares in Q2 2026, an estimated $149K.
Calamos Bitcoin Structured Alt Protection ETF - October made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #7414 holding.
Jane Street first reported a position in Calamos Bitcoin Structured Alt Protection ETF - October in Q4 2025 and has held it in 3 quarters since.
Jane Street's Calamos Bitcoin Structured Alt Protection ETF - October position peaked at $755K in Q4 2025.
8 funds tracked by Wall St. Rank held Calamos Bitcoin Structured Alt Protection ETF - October as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.