Miami International (MIAX) Options Chain
NYSE: MIAXFinanceInvestment Bankers/Brokers/ServiceUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
After hours: 30.70 -0.03%
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $30.70
- Put/call ratio (OI)
- 0.12
- Put/call ratio (volume)
- 0.04
- Expected move
- ±$2.48
- Open interest (C / P)
- 3.35K / 409
MIAX options summary
The MIAX options chain for the October 16, 2026 expiration lists 10 call and 8 put contracts, with 8 days until expiration. Open interest stands at 3,355 calls and 409 puts, a put/call ratio of 0.12, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $30.00 strike is 54.6%, which implies the market expects a move of about ±$2.48 (8.1%) in Miami International stock by expiration.
The most open interest sits at the $45.00 call (2.04K contracts) and the $35.00 put (261 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MIAX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 20.00 | 0.00 | 0.00 | 0.10 | |||||
| 20.14 | 0.00 | 0.00 | 22.50 | 0.00 | 0.70 | 0.03 | |||||
| 1.29 | 1.15 | 1.50 | 30.00 | 0.40 | 0.90 | 0.68 | |||||
| 0.05 | 0.00 | 0.50 | 35.00 | 4.00 | 4.70 | 5.00 | |||||
| 0.04 | 0.00 | 0.10 | 40.00 | 9.00 | 10.80 | 8.70 | |||||
| 0.14 | 0.00 | 0.05 | 45.00 | 13.20 | 15.80 | 13.70 | |||||
| 0.05 | 0.00 | 0.20 | 50.00 | 8.70 | 9.80 | 9.65 | |||||
| 0.20 | 0.00 | 0.00 | 55.00 | — | — | — | |||||
| 0.15 | 0.00 | 0.50 | 60.00 | 17.10 | 20.20 | 22.26 | |||||
| 1.90 | 0.00 | 0.00 | 65.00 | — | — | — | |||||
| 0.50 | 0.00 | 0.00 | 70.00 | — | — | — | |||||
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 October 16, 2026 expiration, the MIAX put/call ratio based on open interest is 0.12 (409 puts vs 3,355 calls), and 0.04 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 October 16, 2026 is about 54.6%, 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.