Standard Nuclear (STDN) Options Chain
NYSE: STDNBasic MaterialsMajor ChemicalsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 41
- Share price
- $13.69
- Put/call ratio (OI)
- 0.21
- Put/call ratio (volume)
- 1.92
- Expected move
- ±$4.10
- Open interest (C / P)
- 218 / 45
STDN options summary
The STDN options chain for the November 20, 2026 expiration lists 5 call and 3 put contracts, with 41 days until expiration. Open interest stands at 218 calls and 45 puts, a put/call ratio of 0.21, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $12.50 strike is 89.4%, which implies the market expects a move of about ±$4.10 (29.9%) in Standard Nuclear stock by expiration.
The most open interest sits at the $15.00 call (177 contracts) and the $12.50 put (26 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
STDN options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 6.50 | 4.60 | 8.00 | 7.50 | 0.00 | 1.95 | 0.20 | |||||
| 4.50 | 2.20 | 5.70 | 10.00 | 0.10 | 0.65 | 0.25 | |||||
| 2.10 | 1.20 | 3.90 | 12.50 | 0.15 | 1.35 | 1.20 | |||||
| 1.03 | 1.00 | 1.25 | 15.00 | — | — | — | |||||
| 0.52 | 0.05 | 1.00 | 17.50 | — | — | — | |||||
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 November 20, 2026 expiration, the STDN put/call ratio based on open interest is 0.21 (45 puts vs 218 calls), and 1.92 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 November 20, 2026 is about 89.4%, 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.