Ferroglobe (GSM) Options Chain
NASDAQ: GSMBasic MaterialsMetal MiningUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Jan 21, 2028
- Days to expiration
- 467
- Share price
- $4.24
- Put/call ratio (OI)
- 0.04
- Put/call ratio (volume)
- 0.49
- Expected move
- ±$2.91
- Open interest (C / P)
- 1.24K / 47
GSM options summary
The GSM options chain for the January 21, 2028 expiration lists 7 call and 3 put contracts, with 467 days until expiration. Open interest stands at 1,239 calls and 47 puts, a put/call ratio of 0.04, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $4.00 strike is 60.8%, which implies the market expects a move of about ±$2.91 (68.8%) in Ferroglobe stock by expiration.
The most open interest sits at the $10.00 call (904 contracts) and the $3.00 put (25 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GSM options chain · January 21, 2028
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.79 | 1.10 | 3.90 | 1.00 | — | — | — | |||||
| 2.17 | 0.95 | 3.80 | 2.00 | — | — | — | |||||
| 2.60 | 0.40 | 3.50 | 3.00 | 0.00 | 2.95 | 0.72 | |||||
| 1.16 | 0.40 | 1.75 | 4.00 | 0.00 | 1.15 | 0.90 | |||||
| 0.85 | 0.70 | 1.10 | 5.00 | 0.30 | 1.80 | 1.60 | |||||
| 0.45 | 0.00 | 0.95 | 7.00 | — | — | — | |||||
| 0.25 | 0.05 | 0.40 | 10.00 | — | — | — | |||||
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 January 21, 2028 expiration, the GSM put/call ratio based on open interest is 0.04 (47 puts vs 1,239 calls), and 0.49 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 January 21, 2028 is about 60.8%, 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.