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How to Buy Cytek Biosciences, Inc. Common Stock (CTKB) Stock

Compare 15 brokers offering CTKB, check 24-hour trading availability, see options pricing, and confirm OTC tier access.

CTKB
$0.0000−$3.77 (−100.00%)
Day range
$3.77 – $3.77
52-week range
$2.37 – $6.18
Volume
105
Market cap
$486.87M
Exchange
XNAS
Asset class
common
Optionable
Yes
24-hour trading
Yes
Fractional eligible
Yes
Tokenized
No
Market cap tier
small

Where to buy CTKB

15 brokers in our matrix offer CTKB (penny/OTC-friendly subset). Verify availability and current fees with each broker before trading.

BrokerCommissionFractionalExtendedOvernightOptionsOTCQXOTCQBPink Cur.Pink Ltd.GreySurchargeShort locate
Firstrade logoFirstradeReview$0
~4,000+ tickers, ≥ $5
~1,200
$0FullFullFullFullLimited—limited
Interactive Brokers logoInteractive BrokersReview$0 (Lite) / per-share (Pro)
~10,000
per-contract pricingFullFullFullFullFullPer-share pricing appliesbest
TradeStation logoTradeStationReview$0 listed
$0.50 / $0.60FullFullFullFullLimited$0.005/share OTC (TS Select/TS Go), $0 up to 10,000 sharesstrong
Charles Schwab (thinkorswim) logoCharles Schwab (thinkorswim)Review$0
Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once
~1,130
$0.65FullFullFullLimitedLimitedVariable service fees on certain restrictedmoderate
E*TRADE (Morgan Stanley) logoE*TRADE (Morgan Stanley)Review$0 listed
~20
$0.65FullFullFullFullLimited$6.95 flat on penny stocksmoderate
Fidelity logoFidelityReview$0
Stocks by the Slice, 7,000+ stocks/ETFs, from $1
$0.65FullFullNoNoNo—limited
Merrill Edge logoMerrill EdgeReview$0
$0.65FullFullFullLimitedNo—none
Moomoo logoMoomooReview$0
$0LimitedLimitedLimitedNoNo—limited
Public.com logoPublic.comReview$0
rebate modelLimitedLimitedLimitedNoNo—none
SoFi Active Investing logoSoFi Active InvestingReview$0
$0FullLimitedLimitedNoNo—none
tastytrade logotastytradeReview$0 stocks
$1.00 open, $0 close (capped at $10 per leg)LimitedLimitedLimitedNoNo—limited
Webull logoWebullReview$0
$0LimitedLimitedLimitedNoNo—limited
CenterPoint Securities logoCenterPoint SecuritiesReviewPer-share (day-trader oriented)
per-contractFullFullFullFullFullPer-sharebest
Cobra Trading logoCobra TradingReviewPer-share (day-trader oriented)
per-contractFullFullFullFullFullPer-sharebest
SpeedTrader logoSpeedTraderReviewPer-share (day-trader oriented)
per-contractFullFullFullFullFullPer-sharebest

24-Hour / Overnight trading

CTKB may be eligible for overnight trading via Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each broker maintains its own eligibility list — confirm before placing an order.

Overnight sessions route through ATSs, typically have wider spreads, accept limit orders only, and offer no guaranteed fills.

Penny stock / OTC routing

CTKB trades on the OTC markets. Broker support varies sharply by tier (OTCQX, OTCQB, Pink Current, Pink Limited, Grey). Fidelity and Robinhood exclude pink/grey entirely. For short-locate on small-caps, Interactive Brokers and the day-trader specialists (Cobra Trading, SpeedTrader, CenterPoint) have the deepest inventory.

About Cytek Biosciences, Inc. Common Stock

Cytek Biosciences Inc is a cell analysis solutions company advancing the next generation of research and clinical tools with its novel technical approach of leveraging the full spectrum of fluorescence signatures from multiple lasers to distinguish fluorescent tags on single cells. Its patented FSP technology optimizes sensitivity and accuracy through its optical and electronic designs that utilize an inventive method of light detection and distribution to a specifically selected number and type of detectors. Its FSP cell analyzers, the Cytek Aurora, Northern Lights, and Cytek Aurora Evo systems, deliver high-resolution, high-content and high-sensitivity cell analysis and address the inherent limitations of other technologies.
Sector
LABORATORY ANALYTICAL INSTRUMENTS
Employees
702
Headquarters
FREMONT, CA
Listed
2021-07-23
Market cap
$486.87M

Frequently asked

Where can I buy Cytek Biosciences, Inc. Common Stock (CTKB)?

CTKB is offered by 15 brokers in our matrix, including Firstrade, Interactive Brokers, TradeStation, Charles Schwab (thinkorswim), E*TRADE (Morgan Stanley). Compare commissions, fractional eligibility, and overnight availability in the broker matrix above.

Can I buy CTKB after hours or overnight?

Yes. CTKB is on the 24-hour eligibility list for Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others. Overnight sessions route through ATSs with wider spreads and limit-orders only.

Does Robinhood offer CTKB?

No. Robinhood does not provide access to the OTC tier CTKB trades on. Interactive Brokers, TradeStation, and Firstrade have the broadest OTC coverage.

Does Fidelity offer CTKB?

Partial. Fidelity's OTC access is tier-limited — see the OTC columns in the matrix to check whether CTKB's specific tier is supported.

Does Webull offer CTKB?

Partial. Webull's OTC access is tier-limited — see the OTC columns in the matrix to check whether CTKB's specific tier is supported.

Is CTKB optionable?

Yes. CTKB has listed options contracts. Per-contract pricing varies by broker — see the Options column in the matrix.

Is there a tokenized version of CTKB?

Not in our current dataset. The tokenized stock universe (Kraken xStocks, Binance Alpha/Ondo, Robinhood EU, Hyperliquid HIP-3) is expanding quickly — we refresh quarterly.

Can I buy a fractional share of CTKB?

Yes. Multiple brokers in the matrix support fractional shares for CTKB — see the Fractional column above for per-broker eligibility and minimums.