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MKSI
MKS Inc. Common Stock
stock NASDAQ

At Close

Sep 21, 2026 3:59:58 PM EDT

256.74USD+1.849%(+4.66)946,074

242.65Bid 269.60Ask 26.95Spread

Pre-market

Sep 21, 2026 8:47:30 AM EDT

260.93USD+3.510%(+8.85)504

After-hours

Sep 21, 2026 4:49:30 PM EDT

256.24USD-0.195%(-0.50)1,549

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Oct 16, 2026 Nov 20, 2026 Dec 18, 2026 Jan 15, 2027 Feb 19, 2027 Apr 16, 2027 May 21, 2027 Aug 20, 2027 Nov 19, 2027

ITM/OTM for Dec 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
147	2,118	768	246

MKSI Dec 18, 2026 Exp. - Volume by Strike

Puts

Calls

MKSI Dec 18, 2026 Exp. - Open Interest by Strike

Puts

Calls

MKSI Dec 18, 2026 Exp. - Max Pain @ $280.00

Puts

Calls

MKSI Dec 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
620 C	1.30	-35.00%	1	3	08-26	MKSI261218C00620000
600 C	2.30	-66.18%	1	2	08-20	MKSI261218C00600000
580 C	7.70	-7.67%	1	2	08-10	MKSI261218C00580000
560 C	2.80	0%	1	1	08-21	MKSI261218C00560000
540 C	10.70	0%	1	1	08-07	MKSI261218C00540000
520 C	1.00	-33.33%	1	3	09-01	MKSI261218C00520000
500 C	8.00	-41.82%	10	29	08-14	MKSI261218C00500000
490 C	1.80	-93.77%	1	503	09-10	MKSI261218C00490000
480 C	0	0%	0			MKSI261218C00480000
470 C	19.10	0%	1	1	06-05	MKSI261218C00470000
460 C	4.90	-87.37%	3	11	08-25	MKSI261218C00460000
450 C	2.15	-92.45%	5	26	09-04	MKSI261218C00450000
440 C	56.50	-40.34%	6	4	07-09	MKSI261218C00440000
430 C	18.70	-13.02%	85	82	08-13	MKSI261218C00430000
420 C	2.65	-87.14%	1	4	09-01	MKSI261218C00420000
410 C	3.66	-94.81%	50	2	09-04	MKSI261218C00410000
400 C	8.44	-22.85%	1	22	08-26	MKSI261218C00400000
390 C	59.30	-13.57%	2	3	07-15	MKSI261218C00390000
380 C	2.62	-72.13%	7	79	09-15	MKSI261218C00380000
370 C	3.50	-58.33%	2	23	09-17	MKSI261218C00370000
360 C	6.80	-54.21%	1	4	09-02	MKSI261218C00360000
350 C	5.37	-36.45%	1	11	09-14	MKSI261218C00350000
340 C	12.32	-1.68%	4	833	09-11	MKSI261218C00340000
330 C	15.00	-75.58%	20	23	09-08	MKSI261218C00330000
320 C	8.00	+11.11%	1	70	09-17	MKSI261218C00320000
310 C	14.43	-39.11%	1	8	09-01	MKSI261218C00310000
300 C	22.30	+4.21%	2	42	09-11	MKSI261218C00300000
290 C	18.40	-20.35%	14	38	09-01	MKSI261218C00290000
280 C	16.70	-42.61%	1	155	09-14	MKSI261218C00280000
270 C	15.30	-54.64%	1	123	09-15	MKSI261218C00270000
260 C	23.60	-17.77%	1	10	09-14	MKSI261218C00260000
250 C	28.80	-36.42%	1	34	09-14	MKSI261218C00250000
240 C	82.90	-39.58%	1	12	07-30	MKSI261218C00240000
230 C	42.25	-37.50%	1	2	09-03	MKSI261218C00230000
220 C	41.67	-62.17%	2	3	09-17	MKSI261218C00220000
210 C	116.40	0%	1	1	08-17	MKSI261218C00210000
200 C	83.80	-28.68%	1	2	08-27	MKSI261218C00200000
195 C	128.80	0%	1	1	08-17	MKSI261218C00195000
190 C	67.70	0%	51	50	09-01	MKSI261218C00190000
185 C	120.50	0%	1	1	08-19	MKSI261218C00185000
180 C	155.10	0%	1	1	06-04	MKSI261218C00180000
175 C	0	0%	0			MKSI261218C00175000
170 C	185.50	0%	1	1	07-07	MKSI261218C00170000
165 C	146.00	0%	1	1	08-18	MKSI261218C00165000
160 C	138.50	-22.02%	1	1	07-30	MKSI261218C00160000
155 C	143.60	0%	1	1	07-30	MKSI261218C00155000
150 C	147.70	0%	2	2	07-30	MKSI261218C00150000
145 C	152.00	0%	1	1	07-30	MKSI261218C00145000
140 C	169.00	+3.81%	1	22	08-18	MKSI261218C00140000
135 C	176.20	+9.65%	8	9	08-12	MKSI261218C00135000
130 C	107.00	-40.06%	1	2	09-16	MKSI261218C00130000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
620 P	0	0%	0			MKSI261218P00620000
600 P	307.10	0%	1	1	08-03	MKSI261218P00600000
580 P	0	0%	0			MKSI261218P00580000
560 P	0	0%	0			MKSI261218P00560000
540 P	0	0%	0			MKSI261218P00540000
520 P	0	0%	0			MKSI261218P00520000
500 P	228.00	0%	1	1	08-26	MKSI261218P00500000
490 P	0	0%	0			MKSI261218P00490000
480 P	0	0%	0			MKSI261218P00480000
470 P	0	0%	0			MKSI261218P00470000
460 P	0	0%	0			MKSI261218P00460000
450 P	0	0%	0			MKSI261218P00450000
440 P	0	0%	0			MKSI261218P00440000
430 P	0	0%	0			MKSI261218P00430000
420 P	144.22	0%	1	1	08-03	MKSI261218P00420000
410 P	89.70	0%	6	6	06-24	MKSI261218P00410000
400 P	117.27	0%	1	1	08-07	MKSI261218P00400000
390 P	109.55	0%	1	1	08-07	MKSI261218P00390000
380 P	110.01	+17.03%	5	32	08-20	MKSI261218P00380000
370 P	0	0%	0			MKSI261218P00370000
360 P	83.80	+7.71%	20	6	08-05	MKSI261218P00360000
350 P	97.49	+121.67%	1	7	09-10	MKSI261218P00350000
340 P	78.33	+18.68%	5	65	08-20	MKSI261218P00340000
330 P	71.55	0%	1	1	08-20	MKSI261218P00330000
320 P	80.76	+18.19%	1	96	09-01	MKSI261218P00320000
310 P	35.10	-35.06%	1	10	06-17	MKSI261218P00310000
300 P	57.39	-5.30%	2	60	09-10	MKSI261218P00300000
290 P	52.70	+11.89%	2	15	08-31	MKSI261218P00290000
280 P	40.10	-14.68%	7	94	09-08	MKSI261218P00280000
270 P	33.70	-5.87%	1	363	09-08	MKSI261218P00270000
260 P	29.12	+2.90%	1	8	09-11	MKSI261218P00260000
250 P	23.20	-7.72%	5	18	08-27	MKSI261218P00250000
240 P	24.60	+18.27%	29	109	09-18	MKSI261218P00240000
230 P	17.89	-8.58%	8	10	08-20	MKSI261218P00230000
220 P	16.90	+3.68%	3	5	09-03	MKSI261218P00220000
210 P	14.00	-19.54%	1	28	09-17	MKSI261218P00210000
200 P	9.60	-11.93%	1	5	09-18	MKSI261218P00200000
195 P	12.20	+19.61%	1	4	09-15	MKSI261218P00195000
190 P	7.90	-3.30%	1	9	09-01	MKSI261218P00190000
185 P	7.30	-5.19%	1	4	09-01	MKSI261218P00185000
180 P	9.30	0%	1	1	07-31	MKSI261218P00180000
175 P	0	0%	0			MKSI261218P00175000
170 P	7.00	+12.90%	1	18	09-16	MKSI261218P00170000
165 P	9.00	0%	1	1	07-30	MKSI261218P00165000
160 P	6.10	-25.61%	1	1	07-31	MKSI261218P00160000
155 P	1.90	-64.81%	3	4	09-09	MKSI261218P00155000
150 P	2.69	+22.27%	1	7	09-14	MKSI261218P00150000
145 P	0	0%	0			MKSI261218P00145000
140 P	1.50	+42.86%	11	21	09-14	MKSI261218P00140000
135 P	2.27	0%	1	1	09-14	MKSI261218P00135000
130 P	0	0%	0			MKSI261218P00130000

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MKSI Dec 18, 2026 Exp. - Open Interest by Strike

MKSI Dec 18, 2026 Exp. - Max Pain @ $280.00

MKSI
MKS Inc. Common Stock
stock NASDAQ