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CITADEL ADVISORS LLC

Position in CTKB — Cytek Biosciences, Inc.

CIK 1423053 MIAMI, FL

Position in CTKB

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,196,112
+$1,136,129 QoQ
Shares Held
721,470
+53.1% QoQ
Ownership
0.555%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#24
of 154 holders
Holding Since
Sep 2021
18 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CTKB Over Time

Shares Held

Position Value (USD)

Derivatives in CTKB

reported options exposure · as of Mar 31, 2026
CallValue
$50,255
CallShares
11,500
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 Medical Devices

Healthcare · as of Jun 30, 2026

CITADEL ADVISORS LLC holds $3,447,350,274 across 95 Medical Devices names. CTKB ranks #37 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CTKB

Export CSV
33 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,196,112 721,470
2026-03-31 $50,255 11,500
2026-03-31 $2,059,983 471,392
2025-12-31 $842,107 166,754
2025-09-30 $285,594 82,304
2025-06-30 $2,098,088 617,085
2025-03-31 $2,406 600
2025-03-31 $19,649 4,900
2025-03-31 $2,416,092 602,517
2024-12-31 $6,490 1,000
2024-12-31 $1,305,397 201,140
2024-09-30 $2,216 400
2024-09-30 $1,498,968 270,572
2024-06-30 $1,116 200
2024-06-30 $558 100
2024-06-30 $318,774 57,128
2023-09-30 $33,672 6,100
2023-09-30 $2,230 404
2023-09-30 $51,336 9,300
2023-06-30 $30,744 3,600
2023-06-30 $222,040 26,000
2023-06-30 $9,897 1,159
2023-03-31 $210,451 22,900
2023-03-31 $919 100
2023-03-31 $3,610,677 392,892
2022-12-31 $619,747 60,700
2022-12-31 $501,739 49,142
2022-12-31 $3,063 300
2022-09-30 $1,017,152 69,100
2022-06-30 $2,842,677 264,928
2022-03-31 $273,262 25,349
2021-12-31 $1,507,461 92,369
2021-09-30 $327,958 15,318