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JANE STREET GROUP, LLC

Position in ABOS — Acumen Pharmaceuticals, Inc.

CIK 1595888 NEW YORK, NY

Position in ABOS

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$211,599
-$88,279 QoQ
Shares Held
89,661
-36.9% QoQ
Ownership
0.124%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#32
of 84 holders
Holding Since
Dec 2022
13 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ABOS Over Time

Shares Held

Position Value (USD)

Derivatives in ABOS

reported options exposure · as of Mar 31, 2026
CallValue
$55,932
CallShares
23,700
PutValue
$44,604
PutShares
18,900

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. ABOS ranks #213 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ABOS

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16 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $55,932 23,700
2026-03-31 $211,599 89,661
2026-03-31 $44,604 18,900
2025-12-31 $299,878 142,123
2025-09-30 $354,377 207,239
2025-06-30 $203,776 175,670
2025-03-31 $11,883 10,804
2024-12-31 $52,872 30,740
2024-09-30 $1,209,237 487,596
2024-09-30 $1,681,440 678,000
2024-06-30 $1,035,006 427,689
2024-03-31 $2,431,031 600,255
2023-12-31 $2,321,740 604,620
2023-09-30 $69,670 16,788
2023-03-31 $302,636 74,541
2022-12-31 $55,069 10,198