Miami International (MIAX) Options Chain
NYSE: MIAXFinanceInvestment Bankers/Brokers/ServiceUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 68
- Share price
- $30.71
- Put/call ratio (OI)
- 0.23
- Put/call ratio (volume)
- 0.74
- Expected move
- ±$7.03
- Open interest (C / P)
- 1.56K / 356
MIAX options summary
The MIAX options chain for the December 18, 2026 expiration lists 11 call and 7 put contracts, with 68 days until expiration. Open interest stands at 1,561 calls and 356 puts, a put/call ratio of 0.23, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $30.00 strike is 53.0%, which implies the market expects a move of about ±$7.03 (22.9%) in Miami International stock by expiration.
The most open interest sits at the $45.00 call (421 contracts) and the $35.00 put (160 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MIAX options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 22.50 | 0.05 | 0.80 | 0.15 | |||||
| 9.80 | 5.50 | 6.90 | 25.00 | 0.60 | 0.95 | 0.83 | |||||
| 3.28 | 3.00 | 3.50 | 30.00 | 2.20 | 2.50 | 2.30 | |||||
| 1.35 | 1.00 | 1.35 | 35.00 | 5.00 | 6.00 | 3.38 | |||||
| 0.38 | 0.30 | 0.55 | 40.00 | 9.40 | 9.70 | 8.23 | |||||
| 0.17 | 0.15 | 0.30 | 45.00 | 13.30 | 15.40 | 6.00 | |||||
| 0.15 | 0.05 | 0.65 | 50.00 | 0.00 | 0.00 | 10.50 | |||||
| 1.00 | 0.00 | 0.65 | 55.00 | — | — | — | |||||
| 0.50 | 0.00 | 0.65 | 60.00 | — | — | — | |||||
| 1.06 | 0.00 | 0.75 | 65.00 | — | — | — | |||||
| 0.51 | 0.00 | 0.00 | 70.00 | — | — | — | |||||
| 0.10 | 0.00 | 0.65 | 75.00 | — | — | — | |||||
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 MIAX put/call ratio?
For the December 18, 2026 expiration, the MIAX put/call ratio based on open interest is 0.23 (356 puts vs 1,561 calls), and 0.74 based on today's volume. A ratio above 1 means more puts than calls.
What is MIAX's implied volatility?
At-the-money implied volatility for MIAX options expiring December 18, 2026 is about 53.0%, an annualized estimate of how much the market expects Miami International stock to move.
How many MIAX option expiration dates are there?
MIAX has 7 listed expiration dates, from Oct 16, 2026 to Dec 17, 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.