MBX Biosciences (MBX) Options Chain
NASDAQ: MBXHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 6
- Share price
- $53.24
- Put/call ratio (OI)
- 0.05
- Put/call ratio (volume)
- 0.17
- Expected move
- ±$6.66
- Open interest (C / P)
- 1.62K / 81
MBX options summary
The MBX options chain for the October 16, 2026 expiration lists 18 call and 9 put contracts, with 6 days until expiration. Open interest stands at 1,624 calls and 81 puts, a put/call ratio of 0.05, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $55.00 strike is 97.5%, which implies the market expects a move of about ±$6.66 (12.5%) in MBX Biosciences stock by expiration.
The most open interest sits at the $70.00 call (664 contracts) and the $60.00 put (26 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MBX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 27.50 | 42.40 | 46.50 | 22.50 | — | — | — | |||||
| 30.00 | 26.00 | 30.20 | 25.00 | — | — | — | |||||
| 23.84 | 34.90 | 39.00 | 30.00 | 0.00 | 4.90 | 4.70 | |||||
| 20.18 | 30.00 | 34.00 | 35.00 | — | — | — | |||||
| 14.00 | 25.00 | 29.50 | 40.00 | 0.00 | 4.90 | 5.80 | |||||
| 12.57 | 20.30 | 25.00 | 45.00 | 0.00 | 4.90 | 0.36 | |||||
| 6.70 | 2.00 | 6.50 | 50.00 | 0.00 | 4.90 | 1.73 | |||||
| 4.10 | 0.00 | 5.00 | 55.00 | 1.50 | 5.50 | 2.56 | |||||
| 3.00 | 0.00 | 4.90 | 60.00 | 5.50 | 9.00 | 8.72 | |||||
| 1.40 | 0.00 | 4.90 | 65.00 | 10.50 | 14.00 | 7.73 | |||||
| 0.10 | 0.00 | 2.80 | 70.00 | — | — | — | |||||
| 1.50 | 0.00 | 4.90 | 75.00 | — | — | — | |||||
| 1.58 | 0.00 | 0.95 | 80.00 | 15.50 | 18.50 | 25.00 | |||||
| 0.05 | 0.00 | 0.40 | 85.00 | — | — | — | |||||
| 2.20 | 0.00 | 2.10 | 90.00 | — | — | — | |||||
| 1.40 | 0.00 | 4.90 | 95.00 | 27.00 | 31.00 | 37.30 | |||||
| 1.95 | 0.00 | 0.00 | 100.00 | — | — | — | |||||
| 1.45 | 0.00 | 0.00 | 105.00 | — | — | — | |||||
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 MBX put/call ratio?
For the October 16, 2026 expiration, the MBX put/call ratio based on open interest is 0.05 (81 puts vs 1,624 calls), and 0.17 based on today's volume. A ratio above 1 means more puts than calls.
What is MBX's implied volatility?
At-the-money implied volatility for MBX options expiring October 16, 2026 is about 97.5%, an annualized estimate of how much the market expects MBX Biosciences stock to move.
How many MBX option expiration dates are there?
MBX 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.