MKS (MKSI) Options Chain
NASDAQ: MKSIIndustrialsIndustrial Machinery/ComponentsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Pre-market: 265.79 +0.49%
Expiration date
- Expiration
- Jan 15, 2027
- Days to expiration
- 95
- Share price
- $264.50
- Put/call ratio (OI)
- 0.23
- Put/call ratio (volume)
- 0.54
- Expected move
- ±$1.05
- Open interest (C / P)
- 30 / 7
MKSI options summary
The MKSI options chain for the January 15, 2027 expiration lists 45 call and 26 put contracts, with 95 days until expiration. Open interest stands at 30 calls and 7 puts, a put/call ratio of 0.23, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $260.00 strike is 0.8%, which implies the market expects a move of about ±$1.05 (0.4%) in MKS stock by expiration.
The most open interest sits at the $370.00 call (9 contracts) and the $170.00 put (3 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MKSI options chain · January 15, 2027
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 125.00 | 0.00 | 0.00 | 0.60 | |||||
| 168.00 | 0.00 | 0.00 | 130.00 | 0.00 | 0.00 | 1.95 | |||||
| 165.00 | 0.00 | 0.00 | 135.00 | 0.00 | 0.00 | 1.87 | |||||
| 165.50 | 0.00 | 0.00 | 145.00 | — | — | — | |||||
| 153.00 | 0.00 | 0.00 | 150.00 | 0.00 | 0.00 | 3.17 | |||||
| 151.00 | 0.00 | 0.00 | 155.00 | — | — | — | |||||
| 121.50 | 104.30 | 108.20 | 160.00 | — | — | — | |||||
| 185.80 | 110.10 | 113.90 | 165.00 | — | — | — | |||||
| 114.00 | 95.70 | 99.50 | 170.00 | 4.90 | 7.80 | 5.39 | |||||
| 128.00 | 0.00 | 0.00 | 175.00 | — | — | — | |||||
| 218.00 | 176.90 | 180.70 | 180.00 | — | — | — | |||||
| 121.82 | 0.00 | 0.00 | 185.00 | 0.00 | 0.00 | 3.50 | |||||
| 144.16 | 79.10 | 83.30 | 190.00 | 0.00 | 0.00 | 12.35 | |||||
| — | — | — | 195.00 | 0.00 | 0.00 | 14.20 | |||||
| 86.75 | 0.00 | 0.00 | 200.00 | 0.00 | 0.00 | 16.00 | |||||
| — | — | — | 210.00 | 0.00 | 0.00 | 9.70 | |||||
| — | — | — | 220.00 | 0.00 | 0.00 | 8.21 | |||||
| 66.94 | 0.00 | 0.00 | 230.00 | 0.00 | 0.00 | 16.50 | |||||
| 118.70 | 57.10 | 60.50 | 240.00 | 0.00 | 0.00 | 15.50 | |||||
| 49.80 | 0.00 | 0.00 | 250.00 | 0.00 | 0.00 | 16.83 | |||||
| 46.60 | 0.00 | 0.00 | 260.00 | 0.00 | 0.00 | 28.50 | |||||
| 27.00 | 0.00 | 0.00 | 270.00 | 0.00 | 0.00 | 34.30 | |||||
| 29.70 | 0.00 | 0.00 | 280.00 | 0.00 | 0.00 | 30.88 | |||||
| 31.26 | 0.00 | 0.00 | 290.00 | 0.00 | 0.00 | 40.85 | |||||
| 18.13 | 0.00 | 0.00 | 300.00 | — | — | — | |||||
| 19.20 | 0.00 | 0.00 | 310.00 | — | — | — | |||||
| 21.00 | 0.00 | 0.00 | 320.00 | 0.00 | 0.00 | 54.67 | |||||
| 12.26 | 0.00 | 0.00 | 330.00 | — | — | — | |||||
| 14.30 | 0.00 | 0.00 | 340.00 | — | — | — | |||||
| 6.80 | 0.00 | 0.00 | 350.00 | 95.00 | 97.90 | 70.73 | |||||
| 10.76 | 0.00 | 0.00 | 360.00 | — | — | — | |||||
| 37.60 | 7.00 | 11.10 | 370.00 | — | — | — | |||||
| 8.50 | 0.00 | 0.00 | 380.00 | 0.00 | 0.00 | 93.67 | |||||
| 26.06 | 0.00 | 0.00 | 390.00 | — | — | — | |||||
| 5.70 | 0.00 | 0.00 | 400.00 | — | — | — | |||||
| 25.40 | 0.00 | 0.00 | 410.00 | — | — | — | |||||
| 3.80 | 0.00 | 0.00 | 420.00 | 117.60 | 120.50 | 85.60 | |||||
| 100.90 | 6.10 | 9.70 | 440.00 | 178.30 | 182.50 | 192.80 | |||||
| 1.90 | 0.00 | 0.00 | 450.00 | — | — | — | |||||
| 3.70 | 0.00 | 0.00 | 460.00 | — | — | — | |||||
| 25.00 | 0.05 | 4.10 | 480.00 | — | — | — | |||||
| 2.00 | 0.00 | 0.00 | 490.00 | 0.00 | 0.00 | 222.70 | |||||
| 2.50 | 0.00 | 0.00 | 500.00 | — | — | — | |||||
| 70.95 | 2.25 | 5.40 | 520.00 | 249.70 | 253.60 | 172.70 | |||||
| 2.14 | 0.00 | 0.00 | 540.00 | — | — | — | |||||
| 15.78 | 1.35 | 4.30 | 560.00 | — | — | — | |||||
| 1.95 | 0.00 | 0.00 | 580.00 | 317.70 | 321.70 | 286.20 | |||||
| 6.70 | 0.00 | 0.00 | 600.00 | — | — | — | |||||
| 0.65 | 0.00 | 0.00 | 620.00 | — | — | — | |||||
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 MKSI put/call ratio?
For the January 15, 2027 expiration, the MKSI put/call ratio based on open interest is 0.23 (7 puts vs 30 calls), and 0.54 based on today's volume. A ratio above 1 means more puts than calls.
What is MKSI's implied volatility?
At-the-money implied volatility for MKSI options expiring January 15, 2027 is about 0.8%, an annualized estimate of how much the market expects MKS stock to move.
How many MKSI option expiration dates are there?
MKSI has 9 listed expiration dates, from Oct 16, 2026 to Nov 19, 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.