Market data loadingS&P 500--NASDAQ--Data as of latest ETNo timestamp

Cytek Biosciences, Inc. (CTKB) Institutional Ownership & Insider Trading

155 institutions reported holding Cytek Biosciences, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

CTKBCytek Biosciences, Inc.Follow CTKB — free
Medical Devices · Healthcare
—
Price chart with a free account
Market cap
726.6M
P/E TTM
—
Dividend yield
—
52-week
—
Next earnings
11 Nov, in 18 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

155 institutions held 62.7% of the shares. Across filers that reported both quarters, shares held changed -4.1%.

Increased+44New+25Decreased-64Closed-34

Largest moves, shares (millions)

Millennium Management+3.0MBoston Partners+1.9MAcadian Asset Management+1.0MBlackRock-7.4MState Street-1.6MBrown Capital Management-1.5M

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters
-3.4Sep 24+1.3Dec 24+0.2Mar 25+1.9Jun 25+0.9Sep 25+1.6Dec 25+2.7Mar 26-3.5Jun 26
QuarterHoldersShares held, MChangeIncreasedNewDecreasedClosed
Jun 2615582-4.1%44256434
Mar 2616585+3.6%61194711
Dec 2515482+2.0%48165515
Sep 2515080+1.1%59154923
Jun 2515679+2.4%63234725
Mar 2516077+0.2%47266220
Dec 2415177+1.7%52253813
Sep 2413675-5.7%62173111

Cytek Biosciences, Inc. — questions

Who owns Cytek Biosciences, Inc. stock?
155 institutions reported Cytek Biosciences, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (7.4%), MILLENNIUM MANAGEMENT LLC (7.2%), Boston Partners (5.9%).

Every figure on this page comes from Cytek Biosciences, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.