Ferroglobe (GSM) Options Chain
NASDAQ: GSMBasic MaterialsMetal MiningUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Mar 19, 2027
- Days to expiration
- 159
- Share price
- $4.24
- Put/call ratio (OI)
- 0.03
- Put/call ratio (volume)
- 0.02
- Expected move
- ±$1.60
- Open interest (C / P)
- 797 / 24
GSM options summary
The GSM options chain for the March 19, 2027 expiration lists 5 call and 2 put contracts, with 159 days until expiration. Open interest stands at 797 calls and 24 puts, a put/call ratio of 0.03, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $4.00 strike is 57.2%, which implies the market expects a move of about ±$1.60 (37.8%) in Ferroglobe stock by expiration.
The most open interest sits at the $5.00 call (546 contracts) and the $4.00 put (20 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GSM options chain · March 19, 2027
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.40 | 1.95 | 2.70 | 2.00 | — | — | — | |||||
| 1.10 | 0.45 | 1.15 | 4.00 | 0.15 | 0.75 | 0.75 | |||||
| 0.45 | 0.25 | 0.55 | 5.00 | 0.05 | 1.70 | 2.21 | |||||
| 0.50 | 0.00 | 0.70 | 6.00 | — | — | — | |||||
| 0.15 | 0.00 | 0.50 | 7.00 | — | — | — | |||||
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 GSM put/call ratio?
For the March 19, 2027 expiration, the GSM put/call ratio based on open interest is 0.03 (24 puts vs 797 calls), and 0.02 based on today's volume. A ratio above 1 means more puts than calls.
What is GSM's implied volatility?
At-the-money implied volatility for GSM options expiring March 19, 2027 is about 57.2%, an annualized estimate of how much the market expects Ferroglobe stock to move.
How many GSM option expiration dates are there?
GSM 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.