Cardiff Oncology (CRDF) Options Chain
NASDAQ: CRDFHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $1.08
- Put/call ratio (OI)
- 0.01
- Put/call ratio (volume)
- 0.03
- Expected move
- ±$0.1592
- Open interest (C / P)
- 4.39K / 49
CRDF options summary
The CRDF options chain for the November 20, 2026 expiration lists 7 call and 4 put contracts, with 40 days until expiration. Open interest stands at 4,388 calls and 49 puts, a put/call ratio of 0.01, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $1.00 strike is 44.5%, which implies the market expects a move of about ±$0.1592 (14.7%) in Cardiff Oncology stock by expiration.
The most open interest sits at the $1.50 call (1.87K contracts) and the $1.50 put (31 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CRDF options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.57 | 0.25 | 1.00 | 0.50 | 0.00 | 0.15 | 0.05 | |||||
| 0.30 | 0.00 | 0.30 | 1.00 | 0.00 | 0.00 | 0.15 | |||||
| 0.05 | 0.00 | 0.05 | 1.50 | 0.10 | 0.85 | 0.53 | |||||
| 0.10 | 0.00 | 0.75 | 2.00 | 0.70 | 1.65 | 0.69 | |||||
| 0.04 | 0.00 | 0.10 | 2.50 | — | — | — | |||||
| 0.03 | 0.00 | 0.75 | 5.00 | — | — | — | |||||
| 0.21 | 0.00 | 0.50 | 7.50 | — | — | — | |||||
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 CRDF put/call ratio?
For the November 20, 2026 expiration, the CRDF put/call ratio based on open interest is 0.01 (49 puts vs 4,388 calls), and 0.03 based on today's volume. A ratio above 1 means more puts than calls.
What is CRDF's implied volatility?
At-the-money implied volatility for CRDF options expiring November 20, 2026 is about 44.5%, an annualized estimate of how much the market expects Cardiff Oncology stock to move.
How many CRDF option expiration dates are there?
CRDF has 5 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.
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.