Mereo BioPharma Group (MREO) Options Chain
NASDAQ: MREOHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- May 21, 2027
- Days to expiration
- 223
- Share price
- $0.3499
- Put/call ratio (OI)
- 0.06
- Put/call ratio (volume)
- 0.11
- ATM implied volatility
- 198.4%
- Expected move
- ±$0.5427
- Open interest (C / P)
- 222 / 14
MREO options summary
The MREO options chain for the May 21, 2027 expiration lists 2 call and 2 put contracts, with 223 days until expiration. Open interest stands at 222 calls and 14 puts, a put/call ratio of 0.06, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $0.50 strike is 198.4%, which implies the market expects a move of about ±$0.5427 (155.1%) in Mereo BioPharma Group stock by expiration.
The most open interest sits at the $0.50 call (121 contracts) and the $1.00 put (10 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MREO options chain · May 21, 2027
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.22 | 0.05 | 0.40 | 0.50 | 0.00 | 0.50 | 0.30 | |||||
| 0.15 | 0.00 | 4.90 | 1.00 | 0.20 | 1.10 | 0.70 | |||||
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 MREO put/call ratio?
For the May 21, 2027 expiration, the MREO put/call ratio based on open interest is 0.06 (14 puts vs 222 calls), and 0.11 based on today's volume. A ratio above 1 means more puts than calls.
What is MREO's implied volatility?
At-the-money implied volatility for MREO options expiring May 21, 2027 is about 198.4%, an annualized estimate of how much the market expects Mereo BioPharma Group stock to move.
How many MREO option expiration dates are there?
MREO has 6 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.
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.