Pacific Biosciences of California (PACB) Options Chain
NASDAQ: PACBIndustrialsBiotechnology: Laboratory Analytical InstrumentsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $2.33
- Put/call ratio (OI)
- 0.04
- Put/call ratio (volume)
- 0.01
- ATM implied volatility
- 117.2%
- Expected move
- ±$0.9039
- Open interest (C / P)
- 8.74K / 385
PACB options summary
The PACB options chain for the November 20, 2026 expiration lists 6 call and 3 put contracts, with 40 days until expiration. Open interest stands at 8,740 calls and 385 puts, a put/call ratio of 0.04, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.00 strike is 117.2%, which implies the market expects a move of about ±$0.9039 (38.8%) in Pacific Biosciences of California stock by expiration.
The most open interest sits at the $3.00 call (4.66K contracts) and the $3.00 put (195 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
PACB options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.22 | 1.30 | 2.25 | 0.50 | — | — | — | |||||
| 1.58 | 1.00 | 1.70 | 1.00 | 0.00 | 0.10 | 0.04 | |||||
| 1.16 | 0.40 | 1.05 | 1.50 | — | — | — | |||||
| 0.48 | 0.40 | 0.70 | 2.00 | 0.10 | 0.25 | 0.20 | |||||
| 0.20 | 0.15 | 0.20 | 3.00 | 0.50 | 0.95 | 0.80 | |||||
| 0.05 | 0.00 | 0.05 | 4.00 | — | — | — | |||||
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 PACB put/call ratio?
For the November 20, 2026 expiration, the PACB put/call ratio based on open interest is 0.04 (385 puts vs 8,740 calls), and 0.01 based on today's volume. A ratio above 1 means more puts than calls.
What is PACB's implied volatility?
At-the-money implied volatility for PACB options expiring November 20, 2026 is about 117.2%, an annualized estimate of how much the market expects Pacific Biosciences of California stock to move.
How many PACB option expiration dates are there?
PACB has 7 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
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.