Southwest Gas (SWX) Options Chain
NYSE: SWXUtilitiesOil & Gas ProductionUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $84.14
- Put/call ratio (OI)
- 3.33
- Expected move
- ±$10.74
- Open interest (C / P)
- 3 / 10
SWX options summary
The SWX options chain for the November 20, 2026 expiration lists 2 call and 1 put contracts, with 40 days until expiration. Open interest stands at 3 calls and 10 puts, a put/call ratio of 3.33, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $85.00 strike is 38.5%, which implies the market expects a move of about ±$10.74 (12.8%) in Southwest Gas stock by expiration.
The most open interest sits at the $95.00 call (2 contracts) and the $85.00 put (10 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
SWX options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 85.00 | 1.05 | 4.80 | 3.00 | |||||
| 0.05 | 0.00 | 4.80 | 90.00 | — | — | — | |||||
| 0.15 | 0.00 | 4.80 | 95.00 | — | — | — | |||||
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 SWX put/call ratio?
For the November 20, 2026 expiration, the SWX put/call ratio based on open interest is 3.33 (10 puts vs 3 calls). A ratio above 1 means more puts than calls.
What is SWX's implied volatility?
At-the-money implied volatility for SWX options expiring November 20, 2026 is about 38.5%, an annualized estimate of how much the market expects Southwest Gas stock to move.
How many SWX option expiration dates are there?
SWX 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.