Hudson Technologies (HDSN) Options Chain
NASDAQ: HDSNConsumer DiscretionaryIndustrial SpecialtiesUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $5.14
- Put/call ratio (OI)
- 0.25
- Put/call ratio (volume)
- 0.19
- Expected move
- ±$1.38
- Open interest (C / P)
- 1.10K / 271
HDSN options summary
The HDSN options chain for the November 20, 2026 expiration lists 9 call and 9 put contracts, with 40 days until expiration. Open interest stands at 1,097 calls and 271 puts, a put/call ratio of 0.25, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 81.0%, which implies the market expects a move of about ±$1.38 (26.8%) in Hudson Technologies stock by expiration.
The most open interest sits at the $6.00 call (449 contracts) and the $5.00 put (135 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
HDSN options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 4.14 | 3.30 | 4.90 | 1.00 | — | — | — | |||||
| — | — | — | 2.00 | 0.00 | 0.35 | 0.05 | |||||
| 2.25 | 2.10 | 2.55 | 3.00 | 0.00 | 0.90 | 0.05 | |||||
| 1.25 | 1.10 | 1.55 | 4.00 | 0.00 | 0.00 | 0.10 | |||||
| 0.63 | 0.20 | 0.60 | 5.00 | 0.00 | 0.50 | 0.33 | |||||
| 0.14 | 0.00 | 0.25 | 6.00 | 0.60 | 1.35 | 1.15 | |||||
| 0.05 | 0.00 | 0.50 | 7.00 | 0.50 | 3.60 | 1.00 | |||||
| 0.05 | 0.00 | 0.15 | 8.00 | 0.00 | 0.00 | 2.65 | |||||
| 0.60 | 0.00 | 0.00 | 9.00 | 0.00 | 0.00 | 3.17 | |||||
| — | — | — | 10.00 | 3.20 | 5.60 | 3.79 | |||||
| 0.10 | 0.00 | 0.00 | 12.00 | — | — | — | |||||
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 HDSN put/call ratio?
For the November 20, 2026 expiration, the HDSN put/call ratio based on open interest is 0.25 (271 puts vs 1,097 calls), and 0.19 based on today's volume. A ratio above 1 means more puts than calls.
What is HDSN's implied volatility?
At-the-money implied volatility for HDSN options expiring November 20, 2026 is about 81.0%, an annualized estimate of how much the market expects Hudson Technologies stock to move.
How many HDSN option expiration dates are there?
HDSN has 4 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.