Cytek Biosciences (CTKB) Options Chain
NASDAQ: CTKBIndustrialsBiotechnology: Laboratory Analytical InstrumentsUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $5.36
- Put/call ratio (OI)
- 0.00
- Put/call ratio (volume)
- 0.60
- Expected move
- ±$0.0928
- Open interest (C / P)
- 7 / 0
CTKB options summary
The CTKB options chain for the October 16, 2026 expiration lists 3 call and 2 put contracts, with 7 days until expiration. Open interest stands at 7 calls and 0 puts, a put/call ratio of 0.00, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 12.5%, which implies the market expects a move of about ±$0.0928 (1.7%) in Cytek Biosciences stock by expiration.
The most open interest sits at the $2.50 call (7 contracts) and the $2.50 put (0 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CTKB options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.22 | 0.00 | 2.45 | 2.50 | 0.00 | 0.00 | 0.05 | |||||
| 1.20 | 0.00 | 0.00 | 5.00 | 0.00 | 0.00 | 0.80 | |||||
| 0.40 | 0.00 | 0.00 | 7.50 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the CTKB put/call ratio?
For the October 16, 2026 expiration, the CTKB put/call ratio based on open interest is 0.00 (0 puts vs 7 calls), and 0.60 based on today's volume. A ratio above 1 means more puts than calls.
What is CTKB's implied volatility?
At-the-money implied volatility for CTKB options expiring October 16, 2026 is about 12.5%, an annualized estimate of how much the market expects Cytek Biosciences stock to move.
How many CTKB option expiration dates are there?
CTKB has 4 listed expiration dates, from Oct 16, 2026 to Apr 16, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.