Standard Nuclear (STDN) Options Chain
NYSE: STDNBasic MaterialsMajor ChemicalsUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $13.49
- Put/call ratio (OI)
- 0.43
- Put/call ratio (volume)
- 0.57
- ATM implied volatility
- 124.5%
- Expected move
- ±$2.49
- Open interest (C / P)
- 307 / 131
STDN options summary
The STDN options chain for the October 16, 2026 expiration lists 5 call and 3 put contracts, with 8 days until expiration. Open interest stands at 307 calls and 131 puts, a put/call ratio of 0.43, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $12.50 strike is 124.5%, which implies the market expects a move of about ±$2.49 (18.4%) in Standard Nuclear stock by expiration.
The most open interest sits at the $15.00 call (264 contracts) and the $12.50 put (86 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
STDN options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 6.00 | 5.50 | 7.80 | 7.50 | 0.00 | 0.05 | 0.05 | |||||
| — | — | — | 10.00 | 0.00 | 0.55 | 0.05 | |||||
| 1.81 | 0.95 | 2.45 | 12.50 | 0.05 | 0.70 | 0.40 | |||||
| 0.30 | 0.15 | 0.60 | 15.00 | — | — | — | |||||
| 0.25 | 0.00 | 0.25 | 17.50 | — | — | — | |||||
| 0.70 | 0.00 | 0.50 | 20.00 | — | — | — | |||||
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 STDN put/call ratio?
For the October 16, 2026 expiration, the STDN put/call ratio based on open interest is 0.43 (131 puts vs 307 calls), and 0.57 based on today's volume. A ratio above 1 means more puts than calls.
What is STDN's implied volatility?
At-the-money implied volatility for STDN options expiring October 16, 2026 is about 124.5%, an annualized estimate of how much the market expects Standard Nuclear stock to move.
How many STDN option expiration dates are there?
STDN has 4 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.