CTKB

Cytek Biosciences, Inc.
NasdaqGSUSDEQUITY Healthcare DELAYED
Last price
5.35
▼ 0.74 (12.15%)
MARKET · —

Price

1D — H — L — Range — Vol —
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
6.18
Prev close
6.09
Day high
6.21
Day low
5.36
Volume
2.05M
Market cap
$699.31M
P/E (TTM)
—
52W range
3.31 – 6.21

Day trading desk

Current session · delayed
Gap from prior close
+1.48%
Prior close 6.09
VWAP
5.59
-4.26% from price
Relative volume
1.71×
Unusually busy
Session range
20.94%
5.30 – 6.41
Position in range
5%
Near session low
ATR (14D)
0.31
5.83% of price
Prior day high
6.11
PDH
Prior day low
5.82
PDL
Bid / ask spread
—
Quote not published
Session volume
1.73M
Avg 1.01M

VWAP and the session figures are computed from the delayed intraday series on this page, so they lag the live tape and will not match a broker's real-time VWAP exactly. Turn on Prior day H/L/C, Opening range and Volume profile in the chart's Studies menu to see these levels drawn on price.

Trailing performance

Price return · vs SPY
Returnvs SPY
1W
-6.60% -8.5%
1M
+14.47% +13.3%
3M
+22.55% +18.0%
6M
+16.96% -1.2%
YTD
+6.53% -7.7%
1Y
+35.52% +19.1%
3Y
-2.54% -84.8%
5Y
— —

Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.

Unusual options activity

Account required
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
Free account required

Contracts trading at or above their open interest, ranked by notional and where the print landed.

Free account

5 more panels on CTKB open with an account.

Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.

Insider net activity

6m · Form 4 rollup
Net shares
0
Net selling
Buy transactions
0
0 shares
Sell transactions
0
—
Net transactions
0
Buys less sells
Sell : buy shares
—
Not enough filings
Insider-held shares
11.01M
Total on file

Insider transactions

Account required
DateInsiderAction SharesValueHeld
Aug 18, 26
YAN MING
Chief Technology Officer
— 33.27K — Direct
Aug 18, 26
MCCOMBE WILLIAM D.
Chief Financial Officer
— 35.42K — Direct
Aug 18, 26
MUIR GLENN P
Director
— 3.09K — Direct
Aug 18, 26
CHIN RICHARD M.D. PH.D.
Director
— 6.11K — Direct
Aug 18, 26
HOLDER MICHAEL
Director
— 2.18K — Direct
Aug 18, 26
JIANG WENBIN
Chief Executive Officer
— 120.09K — Direct
Jun 12, 26
YAN MING
Chief Technology Officer
STOCK 135.89K $0 Direct
Jun 10, 26
IMPER VERA
Director
— 43.97K — Direct
Jun 10, 26
NEFF DEBORAH J
Director
— 43.97K — Direct
Jun 10, 26
HOLDER MICHAEL
Director
— 43.97K — Direct
Jun 10, 26
BALL JACK
Director
— 43.97K — Direct
May 18, 26
YAN MING
Chief Technology Officer
— 22.18K — Direct
May 18, 26
MCCOMBE WILLIAM D.
Chief Financial Officer
— 25.72K — Direct
May 18, 26
BUSQUE PHILIPPE PH.D.
Officer
— 10.46K — Direct
What this is, and what it is not

These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.

A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.

This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.

Free account required

Officer and director trades in their own stock, straight from Form 4 filings.

Insider holders

10 reporting
NameRelationShares heldLatest
BALL JACK
Director 86.68K Conversion of Exercise of derivative security
BARNETT VALERIE
Officer 150.01K Conversion of Exercise of derivative security
BUSQUE PHILIPPE PH.D.
Officer 43.47K Conversion of Exercise of derivative security
HOLDER MICHAEL
Director 62.88K Conversion of Exercise of derivative security
IMPER VERA
Director 59.68K Conversion of Exercise of derivative security
JIANG WENBIN
Chief Executive Officer 5.56M Conversion of Exercise of derivative security
MCCOMBE WILLIAM D.
Chief Financial Officer 134.69K Conversion of Exercise of derivative security
NEFF DEBORAH J
Director 59.68K Conversion of Exercise of derivative security
POIRSON ALLEN
Officer 59.98K Conversion of Exercise of derivative security
YAN MING
Chief Technology Officer 4.82M Conversion of Exercise of derivative security

Fundamentals

TTM · reported
Market cap$699.31M
Enterprise value$463.77M
Revenue (TTM)$206.71M
Gross profit$107.23M
EBITDA$-39.76M
Net income$-80.58M
EPS (TTM)$-0.62
Free cash flow$9.30M
Total cash$262.00M
Total debt$26.46M
Book value / share$2.48
Shares outstanding129.98M
Float102.94M
Short % of float5.10%
Dividend yield0.00%
Beta (5Y)1.16

Valuation & profitability ratios

Account required
Trailing P/E—
Forward P/E76.86
PEG ratio—
Price / sales—
Price / book2.17
EV / revenue2.24
EV / EBITDA-11.66
Gross margin51.88%
Operating margin-29.50%
Profit margin-38.98%
Return on equity-23.04%
Return on assets-6.31%
Debt / equity8.22
Current ratio4.48
Free account required

Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.

Financial statements

As reported · 4 years · 5 quarters
Blank means not reported, not zero
Line item2025202420232022YoY
Total revenue $201.49M$200.45M$193.01M$164.04M +0.5%
Operating revenue $201.49M$200.45M$193.01M$164.04M +0.5%
Cost of revenue $97.03M$89.35M$83.59M$63.06M +8.6%
Gross profit $104.46M$111.11M$109.43M$100.97M -6.0%
Research & development $36.47M$39.40M$44.15M$34.86M -7.4%
Selling, general & admin $108.38M$92.23M$93.12M$67.92M +17.5%
Total operating expense $144.84M$131.63M$137.27M$102.78M +10.0%
Operating income -$40.38M-$20.52M-$27.84M-$1.80M -96.8%
Net interest income $1.74M$10.36M$4.34M$2.05M -83.2%
Pre-tax income -$29.84M-$5.70M-$15.71M$1.26M -423.5%
Tax provision $36.70M$320.00K-$3.56M-$1.22M +11,368.1%
Net income -$66.54M-$6.02M-$12.15M$2.58M -1,005.3%
Net income to common -$66.54M-$6.02M-$12.15M$2.58M -1,005.3%
Basic EPS -0.52-0.05-0.090.02 -940.0%
Diluted EPS -0.52-0.05-0.090.02 -940.0%
EBIT -$29.37M-$20.52M-$13.64M$3.83M -43.1%
EBITDA -$17.39M-$10.03M-$4.41M$9.49M -73.3%
Basic shares 127.75M130.61M130.71M134.51M -2.2%
Diluted shares 127.75M130.61M130.71M138.56M -2.2%

Options analytics

Account required
Put / call volume
0.60
Call-heavy session
Put / call open interest
0.00
Positioning, not flow
Max pain
2.50
-53.5% from spot
ATM implied vol
0.0%
Nearest strike to spot
Skew (10% OTM)
+12.5%
Puts bid over calls
Call volume
5
Contracts, this expiry
Put volume
3
Contracts, this expiry
Heaviest call OI
2.50
7 contracts
Heaviest put OI
2.50
0 contracts

Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.

Free account required

Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.

Earnings

History & consensus estimates
Reported vs expected · EPS
QuarterEst.ActualSurprise
Jun 2026 -0.02-0.03 -55.0%
Mar 2026 -0.08-0.10 -20.0%
Dec 2025 0.02-0.29 -2,014.7%
Sep 2025 0.01-0.00 -103.0%
Forward consensus
PeriodEPSAnalystsRevenueGrowth
Current quarter -0.07 2 $52.95M +1.3%
Next quarter 0.03 1 $63.65M +2.4%
Current year -0.12 1 $209.43M +3.9%
Next year 0.07 1 $223.24M +6.6%

Analyst targets & ownership

Account required
Mean target$5.56
High target$7.50
Low target$4.75
Implied upside3.97%
Analyst count4
ConsensusNONE
Strong buy / Buy1 / 1
Hold2
Sell / Strong sell0 / 0
Held by insiders8.47%
Held by institutions62.95%
Institutions holding208
Free account required

Price targets, consensus spread, insider and institutional ownership.

Moving averages & technicals

Computed from 2Y daily closes
SMA 10
5.77
-7.23% from price
SMA 20
5.38
-0.08% from price
SMA 50
4.89
+10.01% from price
SMA 100
4.55
+17.50% from price
SMA 200
4.62
+16.39% from price
EMA 12
5.64
-5.07% from price
EMA 26
5.35
+0.03% from price
EMA 50
5.05
+5.86% from price
RSI (14)
51.2
Neutral
MACD (12,26,9)
0.29
Hist 0.00
ATR (14)
0.31
5.80% of price
Realised vol 30D
55.0%
Annualised
Bollinger upper
6.33
20, 2σ
Bollinger lower
4.44
20, 2σ
50 / 200 cross
Golden
4.89 vs 4.62
Trend bias
Above 200
+16.39%

Options chain

Account required
Expiry
Spot 5.35
Calls
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Puts
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Free account required

Every listed expiry, both sides of the book, with volume, open interest and implied volatility.

Risk profile

Daily returns · 1Y window
Beta vs SPY
0.87
Less volatile than market
Correlation to SPY
0.20
Largely independent
Realised vol 30D
55.0%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-42.9%
Peak to trough
Max drawdown 5Y
-90.3%
Peak to trough
ATR 14
0.31
5.80% of price
Beta (reported)
1.16
5Y monthly, from filing

Short interest

Semi-monthly exchange report · lags by ~2 weeks
Shares short
5.24M
Prior 4.99M
Change vs prior
+5.1%
Shorts adding
% of float
5.10%
Normal
% of shares out
4.03%
Against total outstanding
Days to cover
6.3
Crowded exit
Float
102.94M
Freely tradeable shares

Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.

Rating changes

36 on file
DateFirm ActionFromTo
May 13, 26 Stephens & Co. MAINTAINED Overweight Overweight
May 12, 26 Morgan Stanley MAINTAINED Equal-Weight Equal-Weight
Jan 8, 26 TD Cowen MAINTAINED Buy Buy
Nov 11, 25 Piper Sandler MAINTAINED Overweight Overweight
May 28, 25 Morgan Stanley MAINTAINED Equal-Weight Equal-Weight
May 12, 25 Goldman Sachs MAINTAINED Sell Sell
Mar 19, 25 Stephens & Co. MAINTAINED Overweight Overweight
Mar 4, 25 Piper Sandler MAINTAINED Overweight Overweight
Nov 11, 24 Piper Sandler MAINTAINED Overweight Overweight
Aug 13, 24 Piper Sandler MAINTAINED Overweight Overweight
May 13, 24 Piper Sandler MAINTAINED Overweight Overweight
Mar 6, 24 Piper Sandler MAINTAINED Overweight Overweight

Dividends & splits

Declared · from the issuer
Forward rate—
Forward yield0.00%
5-year avg yield—
Payout ratio0.00%
Ex-dividend date—
Next pay date—
Last split—
Split date—

PRIVATE STRATEGY · BY QUALIFICATION

The same data. A different seat.

The research you are reading is the input layer for a discretionary options program we run for a small number of qualified investors. Minimum $1,000,000.