Skip to main content

CITADEL ADVISORS LLC

Position in QSI — Quantum-Si Inc

CIK 1423053 MIAMI, FL

Position in QSI

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$12,032
-$2,931,674 QoQ
Shares Held
15,546
-99.4% QoQ
Ownership
0.007%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 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 Mar 31, 2026
CallValue
$69,814
CallShares
90,200
PutValue
$88,081
PutShares
113,800

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 Mar 31, 2026

CITADEL ADVISORS LLC holds $1,870,037,695 across 83 Medical Devices names. QSI ranks #81 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in QSI

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $88,081 113,800
2026-03-31 $12,032 15,546
2026-03-31 $69,814 90,200
2025-12-31 $611,600 556,000
2025-12-31 $287,100 261,000
2025-12-31 $2,943,706 2,676,097
2025-09-30 $459,237 325,700
2025-09-30 $573,936 407,047
2025-09-30 $655,227 464,700
2025-06-30 $512,148 261,300
2025-06-30 $1,003,128 511,800
2025-06-30 $1,094,281 558,307
2025-03-31 $166,197 138,498
2025-03-31 $626,040 521,700
2025-03-31 $357,360 297,800
2024-12-31 $2,078,460 769,800
2024-12-31 $797,310 295,300
2024-09-30 $5,909 6,700
2024-09-30 $60,064 68,100
2024-09-30 $70,342 79,753
2024-06-30 $4,305 4,100
2024-06-30 $237,614 226,300
2024-06-30 $52,815 50,300
2024-03-31 $197,985 100,500
2024-03-31 $10,441 5,300
2024-03-31 $183,210 93,000
2023-12-31 $42,210 21,000
2023-12-31 $251,511 125,130
2023-12-31 $328,233 163,300
2023-09-30 $365,034 219,900
2023-09-30 $43,160 26,000
2023-06-30 $128,880 72,000
2023-06-30 $60,681 33,900
2023-06-30 $191,727 107,111
2023-03-31 $53,913 30,633
2023-03-31 $128,832 73,200
2023-03-31 $59,664 33,900
2022-12-31 $300,669 164,300
2022-12-31 $100,650 55,000
2022-12-31 $264,954 144,784
2022-09-30 $70,125 25,500
2022-09-30 $456,857 166,130
2022-09-30 $322,850 117,400
2022-06-30 $27,840 12,000
2022-06-30 $339,184 146,200
2022-06-30 $673,136 290,145
2022-03-31 $195,085 41,685
2022-03-31 $694,512 148,400
2022-03-31 $62,712 13,400
2021-12-31 $1,027,035 130,500