Guardant Health (GH) Options Chain
NASDAQ: GHHealth CareMedical SpecialitiesUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Pre-market: 166.77 +0.73%
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $165.56
- Put/call ratio (OI)
- 1.22
- Put/call ratio (volume)
- 1.48
- Expected move
- ±$0.1788
- Open interest (C / P)
- 5.67K / 6.89K
GH options summary
The GH options chain for the October 16, 2026 expiration lists 36 call and 36 put contracts, with 7 days until expiration. Open interest stands at 5,666 calls and 6,888 puts, a put/call ratio of 1.22, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $165.00 strike is 0.8%, which implies the market expects a move of about ±$0.1788 (0.1%) in Guardant Health stock by expiration.
The most open interest sits at the $180.00 call (1.77K contracts) and the $150.00 put (1.75K contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GH options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 45.00 | 0.00 | 2.15 | 0.25 | |||||
| 122.60 | 109.70 | 113.80 | 50.00 | 0.00 | 0.55 | 0.05 | |||||
| 98.00 | 106.70 | 110.80 | 55.00 | 0.00 | 2.15 | 0.40 | |||||
| 112.00 | 99.70 | 103.70 | 60.00 | 0.00 | 2.15 | 0.50 | |||||
| 92.40 | 96.60 | 100.80 | 65.00 | 0.00 | 2.15 | 0.50 | |||||
| 104.10 | 89.80 | 93.80 | 70.00 | 0.00 | 0.00 | 0.10 | |||||
| 90.00 | 0.00 | 0.00 | 75.00 | 0.00 | 0.00 | 2.05 | |||||
| 94.50 | 79.90 | 83.90 | 80.00 | 0.00 | 2.15 | 0.55 | |||||
| 86.18 | 0.00 | 0.00 | 85.00 | 0.00 | 2.15 | 0.75 | |||||
| 88.00 | 0.00 | 0.00 | 90.00 | 0.00 | 2.15 | 0.05 | |||||
| 69.20 | 0.00 | 0.00 | 95.00 | 0.00 | 2.15 | 1.05 | |||||
| 80.30 | 0.00 | 0.00 | 100.00 | 0.00 | 0.00 | 0.04 | |||||
| 61.10 | 0.00 | 0.00 | 105.00 | 0.00 | 2.25 | 2.50 | |||||
| 55.30 | 0.00 | 0.00 | 110.00 | 0.00 | 0.00 | 0.11 | |||||
| 47.75 | 45.60 | 48.70 | 115.00 | 0.00 | 0.00 | 1.25 | |||||
| 51.70 | 0.00 | 0.00 | 120.00 | 0.00 | 0.00 | 0.05 | |||||
| 50.66 | 0.00 | 0.00 | 125.00 | 0.00 | 0.00 | 0.05 | |||||
| 35.25 | 0.00 | 0.00 | 130.00 | 0.00 | 0.00 | 0.01 | |||||
| 28.14 | 0.00 | 0.00 | 135.00 | 0.00 | 0.00 | 0.10 | |||||
| 23.25 | 0.00 | 0.00 | 140.00 | 0.00 | 0.00 | 0.25 | |||||
| 24.22 | 0.00 | 0.00 | 145.00 | 0.00 | 0.00 | 0.30 | |||||
| 14.30 | 0.00 | 0.00 | 150.00 | 0.00 | 0.00 | 0.75 | |||||
| 32.79 | 0.00 | 0.00 | 155.00 | 0.00 | 0.00 | 2.80 | |||||
| 7.50 | 0.00 | 0.00 | 160.00 | 0.00 | 0.00 | 4.06 | |||||
| 5.31 | 0.00 | 0.00 | 165.00 | 0.00 | 0.00 | 6.55 | |||||
| 3.10 | 0.00 | 0.00 | 170.00 | 0.00 | 0.00 | 8.20 | |||||
| 1.98 | 0.00 | 0.00 | 175.00 | 0.00 | 0.00 | 11.50 | |||||
| 0.90 | 0.00 | 0.00 | 180.00 | 0.00 | 0.00 | 16.50 | |||||
| 0.50 | 0.00 | 0.00 | 185.00 | 0.00 | 0.00 | 11.72 | |||||
| 0.25 | 0.00 | 0.00 | 190.00 | 0.00 | 0.00 | 13.89 | |||||
| 0.20 | 0.00 | 0.00 | 195.00 | 34.20 | 37.00 | 42.00 | |||||
| 0.06 | 0.00 | 0.00 | 200.00 | 0.00 | 0.00 | 12.80 | |||||
| 0.03 | 0.00 | 0.00 | 210.00 | 48.30 | 50.90 | 39.80 | |||||
| 0.48 | 0.00 | 0.00 | 220.00 | 0.00 | 0.00 | 43.40 | |||||
| 0.30 | 0.00 | 0.00 | 230.00 | 66.60 | 70.60 | 70.00 | |||||
| 0.54 | 0.00 | 0.00 | 240.00 | — | — | — | |||||
| 0.05 | 0.00 | 0.00 | 250.00 | 84.70 | 88.50 | 98.00 | |||||
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 GH put/call ratio?
For the October 16, 2026 expiration, the GH put/call ratio based on open interest is 1.22 (6,888 puts vs 5,666 calls), and 1.48 based on today's volume. A ratio above 1 means more puts than calls.
What is GH's implied volatility?
At-the-money implied volatility for GH options expiring October 16, 2026 is about 0.8%, an annualized estimate of how much the market expects Guardant Health stock to move.
How many GH option expiration dates are there?
GH has 10 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.