Guardant Health (GH) Options Chain

NASDAQ: GHHealth CareMedical SpecialitiesUSD

167.47+1.91 (+1.15%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Jan 21, 2028
Days to expiration: 468
Share price: $167.47
Put/call ratio (OI): 0.12
Put/call ratio (volume): 0.45
ATM implied volatility: 62.1%
Expected move: ±$117.78
Open interest (C / P): 1.20K / 141

GH options summary

The GH options chain for the January 21, 2028 expiration lists 40 call and 26 put contracts, with 468 days until expiration. Open interest stands at 1,197 calls and 141 puts, a put/call ratio of 0.12, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $165.00 strike is 62.1%, which implies the market expects a move of about ±$117.78 (70.3%) in Guardant Health stock by expiration.

The most open interest sits at the $60.00 call (238 contracts) and the $120.00 put (32 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

GH options chain · January 21, 2028

GH calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
54	4	102.9%	155.44	137.50	142.00	30.00	0.00	2.95	0.58	93.3%	3	3
0	1	—	126.50	0.00	0.00	35.00	—	—	—	—	—	—
0	6	—	127.50	0.00	0.00	40.00	—	—	—	—	—	—
7	1	81.0%	104.31	120.00	125.00	45.00	0.00	0.00	4.30	25.0%	2	0
14	2	87.6%	119.00	119.50	124.50	50.00	3.50	7.00	8.34	91.6%	1	2
10	1	61.7%	117.50	111.50	116.50	55.00	—	—	—	—	—	—
238	1	64.4%	110.00	105.00	110.00	60.00	4.50	9.50	12.30	86.8%	2	4
20	1	—	63.50	36.00	41.00	65.00	11.50	16.50	19.00	106.5%	—	1
14	5	78.3%	118.17	103.00	107.50	70.00	2.00	4.30	7.71	59.0%	3	9
0	1	—	99.00	0.00	0.00	75.00	16.00	21.00	13.20	106.4%	—	0
0	4	—	49.79	0.00	0.00	80.00	0.00	0.00	13.00	12.5%	2	0
10	3	65.0%	91.09	88.30	93.00	85.00	4.50	9.50	10.20	61.4%	1	5
13	1	72.2%	90.00	87.50	92.20	90.00	5.50	10.50	11.70	60.3%	1	2
0	1	—	81.00	0.00	0.00	95.00	7.00	11.20	10.10	59.3%	1	17
0	2	—	77.73	0.00	0.00	100.00	6.50	11.50	9.20	55.1%	13	22
164	5	68.8%	76.50	77.00	81.50	105.00	30.50	35.00	38.20	102.7%	1	11
133	1	68.0%	66.80	74.00	78.00	110.00	11.00	16.00	18.59	57.6%	1	1
1	2	—	22.20	43.50	48.00	115.00	11.00	15.70	13.07	53.4%	1	1
0	2	—	66.48	0.00	0.00	120.00	12.90	17.50	14.43	53.2%	1	32
11	5	66.1%	70.50	64.50	69.50	125.00	—	—	—	—	—	—
3	1	57.6%	60.00	57.50	61.50	130.00	48.00	52.50	42.44	106.8%	—	1
0	8	—	56.50	0.00	0.00	135.00	0.00	0.00	24.10	3.1%	10	0
28	1	62.0%	58.50	55.00	59.50	140.00	20.50	25.50	22.00	51.3%	5	1
0	2	—	53.25	0.00	0.00	145.00	23.00	28.00	20.20	51.2%	1	6
52	10	63.3%	61.42	51.50	56.00	150.00	25.00	30.00	23.60	50.3%	2	4
33	10	63.0%	58.89	49.00	54.00	155.00	27.50	32.50	29.70	53.5%	2	4
40	10	62.6%	55.48	47.00	51.50	160.00	30.00	35.00	30.10	53.0%	10	10
113	1	62.1%	55.77	44.50	49.50	165.00	—	—	—	—	—	—
GH $167.47
13	1	61.9%	53.37	42.50	47.50	170.00	35.50	40.50	37.73	52.2%	1	3
86	1	61.5%	48.30	40.50	45.50	175.00	38.50	43.50	35.50	51.9%	1	2
16	1	61.0%	53.90	38.50	43.50	180.00	—	—	—	—	—	—
3	2	60.8%	39.00	37.00	41.50	185.00	—	—	—	—	—	—
33	30	56.5%	32.72	32.50	36.50	190.00	—	—	—	—	—	—
9	2	60.1%	42.50	33.50	38.00	195.00	—	—	—	—	—	—
47	1	60.0%	36.50	32.00	36.50	200.00	—	—	—	—	—	—
0	1	3.1%	30.00	0.00	0.00	210.00	—	—	—	—	—	—
—	—	—	39.22	—	—	220.00	—	—	—	—	—	—
1	1	58.3%	30.50	21.50	26.00	240.00	—	—	—	—	—	—
21	1	57.7%	22.00	19.00	24.00	250.00	0.00	0.00	102.00	—	—	0
10	10	57.2%	22.48	17.00	22.00	260.00	—	—	—	—	—	—

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 January 21, 2028 expiration, the GH put/call ratio based on open interest is 0.12 (141 puts vs 1,197 calls), and 0.45 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 January 21, 2028 is about 62.1%, 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.