Keros Therapeutics (KROS) Options Chain
NASDAQ: KROSHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $11.64
- Put/call ratio (OI)
- 2.08
- Put/call ratio (volume)
- 0.17
- Expected move
- ±$0.2015
- Open interest (C / P)
- 13 / 27
KROS options summary
The KROS options chain for the October 16, 2026 expiration lists 3 call and 1 put contracts, with 7 days until expiration. Open interest stands at 13 calls and 27 puts, a put/call ratio of 2.08, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $12.50 strike is 12.5%, which implies the market expects a move of about ±$0.2015 (1.7%) in Keros Therapeutics stock by expiration.
The most open interest sits at the $12.50 call (10 contracts) and the $10.00 put (27 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
KROS options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 1.50 | 0.00 | 0.00 | 10.00 | 0.00 | 0.00 | 0.10 | |||||
| 0.34 | 0.00 | 0.00 | 12.50 | — | — | — | |||||
| 0.25 | 0.00 | 0.00 | 15.00 | — | — | — | |||||
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 KROS put/call ratio?
For the October 16, 2026 expiration, the KROS put/call ratio based on open interest is 2.08 (27 puts vs 13 calls), and 0.17 based on today's volume. A ratio above 1 means more puts than calls.
What is KROS's implied volatility?
At-the-money implied volatility for KROS options expiring October 16, 2026 is about 12.5%, an annualized estimate of how much the market expects Keros Therapeutics stock to move.
How many KROS option expiration dates are there?
KROS has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 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.