Mesabi (MSB) Options Chain
NYSE: MSBIndustrialsPrecious MetalsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 6
- Share price
- $18.42
- Put/call ratio (OI)
- 0.05
- Put/call ratio (volume)
- 0.00
- Expected move
- ±$2.11
- Open interest (C / P)
- 442 / 22
MSB options summary
The MSB options chain for the October 16, 2026 expiration lists 5 call and 3 put contracts, with 6 days until expiration. Open interest stands at 442 calls and 22 puts, a put/call ratio of 0.05, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $17.50 strike is 89.3%, which implies the market expects a move of about ±$2.11 (11.4%) in Mesabi stock by expiration.
The most open interest sits at the $22.50 call (276 contracts) and the $15.00 put (10 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MSB options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 4.10 | 1.30 | 4.90 | 15.00 | 0.00 | 4.50 | 0.15 | |||||
| — | — | — | 17.50 | 0.00 | 1.00 | 0.07 | |||||
| 0.05 | 0.00 | 0.50 | 20.00 | 0.95 | 4.90 | 1.00 | |||||
| 0.15 | 0.00 | 0.05 | 22.50 | — | — | — | |||||
| 0.09 | 0.00 | 0.05 | 25.00 | — | — | — | |||||
| 0.05 | 0.00 | 0.75 | 30.00 | — | — | — | |||||
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 MSB put/call ratio?
For the October 16, 2026 expiration, the MSB put/call ratio based on open interest is 0.05 (22 puts vs 442 calls), and 0.00 based on today's volume. A ratio above 1 means more puts than calls.
What is MSB's implied volatility?
At-the-money implied volatility for MSB options expiring October 16, 2026 is about 89.3%, an annualized estimate of how much the market expects Mesabi stock to move.
How many MSB option expiration dates are there?
MSB 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.