Twist Bioscience (TWST) Options Chain

NASDAQ: TWSTHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD

159.78+7.73 (+5.08%)

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

Expiration date

Expiration: Dec 17, 2027
Days to expiration: 432
Share price: $159.78
Put/call ratio (OI): 0.42
Put/call ratio (volume): 0.74
ATM implied volatility: 84.0%
Expected move: ±$146.09
Open interest (C / P): 640 / 268

TWST options summary

The TWST options chain for the December 17, 2027 expiration lists 39 call and 29 put contracts, with 432 days until expiration. Open interest stands at 640 calls and 268 puts, a put/call ratio of 0.42, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $160.00 strike is 84.0%, which implies the market expects a move of about ±$146.09 (91.4%) in Twist Bioscience stock by expiration.

The most open interest sits at the $150.00 call (222 contracts) and the $95.00 put (37 contracts).

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

TWST options chain · December 17, 2027

TWST 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
2	1	106.9%	153.90	120.50	125.00	42.50	0.00	0.00	3.80	25.0%	—	0
2	1	105.5%	152.05	118.50	123.00	45.00	—	—	—	—	—	—
—	—	—	—	—	—	47.50	2.00	7.00	9.90	92.6%	—	4
1	—	102.5%	148.58	114.50	119.00	50.00	—	—	—	—	—	—
—	—	—	—	—	—	55.00	2.00	7.00	6.00	82.3%	—	1
1	—	100.3%	117.98	107.30	112.00	60.00	3.50	8.50	6.00	83.6%	1	2
4	2	98.3%	105.40	103.50	108.50	65.00	4.50	9.50	7.50	81.9%	1	1
—	—	—	—	—	—	70.00	6.00	11.00	8.00	81.9%	1	5
1	1	—	57.00	65.00	70.00	75.00	—	—	—	—	—	—
7	16	96.7%	90.76	95.00	98.50	80.00	—	—	—	—	—	—
1	—	97.1%	117.30	93.50	97.50	82.50	—	—	—	—	—	—
2	1	—	35.65	60.00	65.00	85.00	—	—	—	—	—	—
0	—	95.7%	106.20	90.50	94.20	87.50	—	—	—	—	—	—
6	1	—	50.00	57.50	62.50	90.00	13.00	18.00	15.20	80.8%	1	1
13	2	93.5%	111.45	85.30	90.00	95.00	15.00	20.00	14.93	80.5%	35	37
0	1	—	52.50	0.00	0.00	97.50	—	—	—	—	—	—
14	3	94.8%	78.50	84.00	87.50	100.00	17.00	21.50	21.20	79.3%	4	7
5	3	92.3%	53.99	77.50	82.50	110.00	21.50	26.50	31.10	79.3%	—	2
6	2	93.7%	76.65	76.50	80.50	115.00	24.00	29.00	31.20	79.2%	1	5
33	1	92.9%	74.34	74.00	78.00	120.00	—	—	—	—	—	—
4	1	92.9%	64.50	72.00	76.00	125.00	29.00	34.00	32.94	78.4%	1	10
2	2	92.8%	92.69	70.00	74.00	130.00	—	—	—	—	—	—
0	—	—	53.04	0.00	0.00	135.00	34.50	39.50	34.20	78.0%	1	2
1	1	91.4%	103.60	65.00	70.00	140.00	37.50	42.50	33.56	78.0%	6	18
0	—	—	54.46	0.00	0.00	145.00	40.50	45.00	41.25	77.5%	2	37
222	51	91.7%	58.00	62.50	66.00	150.00	43.50	48.00	45.25	77.3%	5	10
10	1	91.5%	59.55	60.50	64.50	155.00	46.50	51.50	46.43	77.3%	1	3
TWST $159.78
8	10	90.8%	61.80	58.00	63.00	160.00	50.00	54.50	49.50	77.3%	5	8
2	—	91.2%	64.30	57.00	61.50	165.00	—	—	—	—	—	—
5	1	91.6%	53.30	56.00	60.00	170.00	56.50	61.00	57.50	76.9%	8	12
16	1	91.0%	81.15	54.00	58.50	175.00	59.50	64.50	53.90	76.5%	4	3
10	5	90.8%	73.62	52.50	57.00	180.00	63.00	67.50	67.00	76.1%	1	3
20	—	91.0%	40.00	51.50	55.50	185.00	—	—	—	—	—	—
4	1	90.6%	84.00	50.00	54.00	190.00	70.00	74.50	71.50	75.8%	4	9
22	2	90.6%	69.90	48.50	53.00	195.00	73.50	78.00	75.10	75.5%	4	15
59	20	90.5%	47.70	47.50	51.50	200.00	—	—	—	—	—	—
1	1	90.6%	81.84	45.00	49.50	210.00	84.50	89.00	94.00	75.0%	—	4
8	1	90.4%	38.67	43.00	47.00	220.00	—	—	—	—	—	—
7	1	90.4%	43.77	41.00	45.00	230.00	100.00	104.50	92.75	74.6%	1	17
—	—	—	—	—	—	240.00	107.50	112.00	99.00	73.7%	—	5
76	6	89.8%	47.33	36.80	41.00	250.00	115.50	120.00	113.00	73.4%	—	6
2	1	89.8%	55.56	35.00	39.50	260.00	123.50	128.00	116.50	72.8%	—	9
63	1	89.9%	32.50	33.50	38.00	270.00	132.00	136.00	117.48	72.5%	18	32

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 TWST put/call ratio?

For the December 17, 2027 expiration, the TWST put/call ratio based on open interest is 0.42 (268 puts vs 640 calls), and 0.74 based on today's volume. A ratio above 1 means more puts than calls.

What is TWST's implied volatility?

At-the-money implied volatility for TWST options expiring December 17, 2027 is about 84.0%, an annualized estimate of how much the market expects Twist Bioscience stock to move.

How many TWST option expiration dates are there?

TWST has 6 listed expiration dates, from Oct 16, 2026 to Dec 17, 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.