Quantum-Si (QSI) Options Chain
NASDAQ: QSIIndustrialsIndustrial Machinery/ComponentsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 30, 2026
- Days to expiration
- 19
- Share price
- $1.53
- Put/call ratio (OI)
- 1.15
- Put/call ratio (volume)
- 0.16
- ATM implied volatility
- 150.8%
- Expected move
- ±$0.5263
- Open interest (C / P)
- 653 / 748
QSI options summary
The QSI options chain for the October 30, 2026 expiration lists 4 call and 4 put contracts, with 19 days until expiration. Open interest stands at 653 calls and 748 puts, a put/call ratio of 1.15, which is fairly balanced between calls and puts. At-the-money implied volatility near the $1.50 strike is 150.8%, which implies the market expects a move of about ±$0.5263 (34.4%) in Quantum-Si stock by expiration.
The most open interest sits at the $1.50 call (428 contracts) and the $1.00 put (570 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
QSI options chain · October 30, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 1.15 | 0.70 | 1.70 | 0.50 | 0.00 | 0.05 | 0.05 | |||||
| 0.60 | 0.45 | 0.70 | 1.00 | 0.00 | 0.05 | 0.05 | |||||
| 0.30 | 0.05 | 0.35 | 1.50 | 0.10 | 0.35 | 0.24 | |||||
| 0.15 | 0.10 | 0.20 | 2.00 | 0.25 | 1.25 | 0.57 | |||||
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 QSI put/call ratio?
For the October 30, 2026 expiration, the QSI put/call ratio based on open interest is 1.15 (748 puts vs 653 calls), and 0.16 based on today's volume. A ratio above 1 means more puts than calls.
What is QSI's implied volatility?
At-the-money implied volatility for QSI options expiring October 30, 2026 is about 150.8%, an annualized estimate of how much the market expects Quantum-Si stock to move.
How many QSI option expiration dates are there?
QSI has 8 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.