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JANE STREET GROUP, LLC

Position in QSI — Quantum-Si Inc

CIK 1595888 NEW YORK, NY

Position in QSI

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,896,320
+$1,896,320 QoQ
Shares Held
2,142,735
Ownership
0.979%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#10
of 141 holders
Holding Since
Mar 2021
20 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in QSI Over Time

Shares Held

Position Value (USD)

Derivatives in QSI

reported options exposure · as of Jun 30, 2026
CallValue
$218,860
CallShares
247,300
PutValue
$29,913
PutShares
33,800

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 Medical Devices

Healthcare · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $1,155,682,201 across 70 Medical Devices names. QSI ranks #20 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in QSI

Export CSV
40 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $218,860 247,300
2026-06-30 $1,896,320 2,142,735
2026-06-30 $29,913 33,800
2026-03-31 $24,071 31,100
2026-03-31 $194,661 251,500
2025-12-31 $306,460 278,600
2025-12-31 $1,214,435 1,104,033
2025-12-31 $57,420 52,200
2025-09-30 $21,150 15,000
2025-09-30 $86,292 61,200
2025-09-30 $2,270,131 1,610,023
2025-06-30 $558,115 284,753
2025-06-30 $84,280 43,000
2025-06-30 $46,648 23,800
2025-03-31 $44,760 37,300
2025-03-31 $44,880 37,400
2024-12-31 $64,381 23,845
2024-12-31 $120,960 44,800
2024-12-31 $268,380 99,400
2024-09-30 $226,399 256,689
2024-06-30 $319,258 304,056
2024-03-31 $297,711 151,123
2023-12-31 $24,549 12,214
2023-09-30 $46,123 27,785
2023-06-30 $48,864 27,299
2023-03-31 $230,624 131,037
2022-09-30 $31,501 11,455
2022-03-31 $319,400 68,248
2022-03-31 $875,628 187,100
2022-03-31 $104,364 22,300
2021-12-31 $206,194 26,200
2021-12-31 $1,581,870 201,000
2021-09-30 $207,090 24,831
2021-09-30 $1,333,566 159,900
2021-09-30 $266,046 31,900
2021-06-30 $534,585 43,604
2021-06-30 $2,261,970 184,500
2021-06-30 $128,730 10,500
2021-03-31 CAPA 13,100
2021-03-31 CAPA 28,931