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RHUMBLINE ADVISERS

Position in CTKB — Cytek Biosciences, Inc.

CIK 1115418 BOSTON, MA

Position in CTKB

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$678,786
-$433,767 QoQ
Shares Held
153,225
-39.8% QoQ
Ownership
0.118%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#46
of 154 holders
Holding Since
Sep 2021
20 quarters on record
Voting authority Sole 17% Shared 0% None 83%

Common Shares in CTKB Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $1,264,483,794 across 83 Medical Devices names. CTKB ranks #44 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CTKB

Export CSV
20 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $678,786 153,225
2026-03-31 $1,112,553 254,589
2025-12-31 $1,262,197 249,940
2025-09-30 $972,873 280,367
2025-06-30 $961,013 282,651
2025-03-31 $1,188,098 296,284
2024-12-31 $1,911,558 294,539
2024-09-30 $1,631,668 294,525
2024-06-30 $1,983,332 355,436
2024-03-31 $2,263,363 337,312
2023-12-31 $2,987,985 327,630
2023-09-30 $1,777,395 321,992
2023-06-30 $2,480,203 290,422
2023-03-31 $1,372,682 149,367
2022-12-31 $1,455,568 142,563
2022-09-30 $2,071,368 140,718
2022-06-30 $1,383,815 128,967
2022-03-31 $1,037,876 96,278
2021-12-31 $241,911 14,823
2021-09-30 $251,803 11,761