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JANE STREET GROUP, LLC

Position in CRBU — Caribou Biosciences, Inc.

CIK 1595888 NEW YORK, NY

Position in CRBU

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$47,450
-$422,688 QoQ
Shares Held
24,975
-91.6% QoQ
Ownership
0.025%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#75
of 137 holders
Holding Since
Sep 2022
13 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in CRBU Over Time

Shares Held

Position Value (USD)

Derivatives in CRBU

reported options exposure · as of Mar 31, 2026
CallValue
$164,350
CallShares
86,500
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

JANE STREET GROUP, LLC holds $1,247,243,084 across 314 Biotechnology names. CRBU ranks #273 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CRBU

Export CSV
15 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $164,350 86,500
2026-03-31 $47,450 24,975
2025-12-31 $55,650 35,000
2025-12-31 $470,138 295,685
2025-09-30 $1,117,089 479,438
2025-06-30 $609,347 483,610
2025-03-31 $268,136 293,687
2024-12-31 $541,934 340,840
2024-09-30 $1,273,920 649,960
2024-06-30 $1,096,339 668,500
2024-03-31 $314,665 61,219
2023-12-31 $655,127 114,333
2023-09-30 $229,846 48,085
2023-06-30 $732,338 172,315
2022-09-30 $182,652 17,313