Constellium (CSTM) Options Chain
NYSE: CSTMIndustrialsMetal FabricationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- May 21, 2027
- Days to expiration
- 223
- Share price
- $25.81
- Put/call ratio (OI)
- 2.00
- Put/call ratio (volume)
- 1.35
- Expected move
- ±$11.67
- Open interest (C / P)
- 23 / 46
CSTM options summary
The CSTM options chain for the May 21, 2027 expiration lists 8 call and 4 put contracts, with 223 days until expiration. Open interest stands at 23 calls and 46 puts, a put/call ratio of 2.00, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $26.00 strike is 57.9%, which implies the market expects a move of about ±$11.67 (45.2%) in Constellium stock by expiration.
The most open interest sits at the $15.00 call (5 contracts) and the $23.00 put (22 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CSTM options chain · May 21, 2027
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 11.06 | 10.20 | 12.90 | 15.00 | — | — | — | |||||
| 6.65 | 6.30 | 8.30 | 21.00 | 1.45 | 2.25 | 2.28 | |||||
| 4.98 | 4.60 | 7.10 | 23.00 | 2.10 | 3.10 | 2.65 | |||||
| 5.00 | 4.70 | 6.50 | 24.00 | — | — | — | |||||
| — | — | — | 25.00 | 2.50 | 4.10 | 3.60 | |||||
| 4.20 | 3.80 | 5.30 | 26.00 | — | — | — | |||||
| — | — | — | 28.00 | 4.50 | 5.70 | 5.88 | |||||
| 3.10 | 2.60 | 4.00 | 29.00 | — | — | — | |||||
| 2.10 | 2.30 | 3.80 | 30.00 | — | — | — | |||||
| 2.25 | 2.00 | 3.40 | 31.00 | — | — | — | |||||
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 CSTM put/call ratio?
For the May 21, 2027 expiration, the CSTM put/call ratio based on open interest is 2.00 (46 puts vs 23 calls), and 1.35 based on today's volume. A ratio above 1 means more puts than calls.
What is CSTM's implied volatility?
At-the-money implied volatility for CSTM options expiring May 21, 2027 is about 57.9%, an annualized estimate of how much the market expects Constellium stock to move.
How many CSTM option expiration dates are there?
CSTM has 5 listed expiration dates, from Oct 16, 2026 to May 21, 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.