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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 May 21, 2027View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
62	370	17	272

MKSI May 21, 2027 Exp. - Volume by Strike

Puts

Calls

MKSI May 21, 2027 Exp. - Open Interest by Strike

Puts

Calls

MKSI May 21, 2027 Exp. - Max Pain @ $220.00

Puts

Calls

MKSI May 21, 2027 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
620 C	2.80	-20.00%	1	2	09-15	MKSI270521C00620000
600 C	3.20	-17.95%	1	100	09-15	MKSI270521C00600000
580 C	4.30	0%	1	1	09-14	MKSI270521C00580000
560 C	4.90	0%	1	1	09-02	MKSI270521C00560000
540 C	7.80	0%	1	1	08-31	MKSI270521C00540000
520 C	8.70	-52.61%	1	3	08-31	MKSI270521C00520000
500 C	18.70	-58.99%	6	13	08-19	MKSI270521C00500000
490 C	19.80	0%	6	6	08-19	MKSI270521C00490000
480 C	12.26	-45.51%	1	1	08-28	MKSI270521C00480000
470 C	0	0%	0			MKSI270521C00470000
460 C	0	0%	0			MKSI270521C00460000
450 C	0	0%	0			MKSI270521C00450000
440 C	21.49	-23.71%	1	1	08-24	MKSI270521C00440000
430 C	41.58	-15.63%	1	1	08-12	MKSI270521C00430000
420 C	58.20	0%	18	10	06-04	MKSI270521C00420000
410 C	0	0%	0			MKSI270521C00410000
400 C	18.00	-59.74%	4	11	08-28	MKSI270521C00400000
390 C	0	0%	0			MKSI270521C00390000
380 C	0	0%	0			MKSI270521C00380000
370 C	0	0%	0			MKSI270521C00370000
360 C	131.00	+25.42%	1	1	06-22	MKSI270521C00360000
350 C	107.00	+20.78%	1	1	06-15	MKSI270521C00350000
340 C	0	0%	0			MKSI270521C00340000
330 C	0	0%	0			MKSI270521C00330000
320 C	37.10	-16.82%	17	17	09-11	MKSI270521C00320000
310 C	41.30	-13.78%	10	11	09-08	MKSI270521C00310000
300 C	42.00	+10.53%	1	16	09-10	MKSI270521C00300000
290 C	53.90	-1.64%	55	85	08-26	MKSI270521C00290000
280 C	38.00	-19.95%	1	12	09-18	MKSI270521C00280000
270 C	41.00	+8.47%	1	36	09-18	MKSI270521C00270000
260 C	54.00	0%	40	40	08-28	MKSI270521C00260000
250 C	58.74	-61.90%	17	16	08-28	MKSI270521C00250000
240 C	68.60	0%	4	4	08-28	MKSI270521C00240000
230 C	67.90	0%	4	4	08-28	MKSI270521C00230000
220 C	72.70	0%	4	4	08-28	MKSI270521C00220000
210 C	0	0%	0			MKSI270521C00210000
200 C	135.50	0%	1	1	07-31	MKSI270521C00200000
195 C	0	0%	0			MKSI270521C00195000
190 C	142.00	0%	1	1	07-31	MKSI270521C00190000
185 C	0	0%	0			MKSI270521C00185000
180 C	209.45	0%	5	5	07-10	MKSI270521C00180000
175 C	0	0%	0			MKSI270521C00175000
170 C	177.01	0%	1	1	06-02	MKSI270521C00170000
165 C	0	0%	0			MKSI270521C00165000
160 C	0	0%	0			MKSI270521C00160000
155 C	0	0%	0			MKSI270521C00155000
150 C	165.00	0%	1	1	07-31	MKSI270521C00150000
145 C	0	0%	0			MKSI270521C00145000
140 C	192.43	0%	1	1	08-05	MKSI270521C00140000
135 C	104.82	-37.83%	20	22	09-15	MKSI270521C00135000
130 C	205.66	+13.94%	1	2	08-04	MKSI270521C00130000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
620 P	0	0%	0			MKSI270521P00620000
600 P	0	0%	0			MKSI270521P00600000
580 P	0	0%	0			MKSI270521P00580000
560 P	0	0%	0			MKSI270521P00560000
540 P	0	0%	0			MKSI270521P00540000
520 P	0	0%	0			MKSI270521P00520000
500 P	0	0%	0			MKSI270521P00500000
490 P	0	0%	0			MKSI270521P00490000
480 P	0	0%	0			MKSI270521P00480000
470 P	0	0%	0			MKSI270521P00470000
460 P	0	0%	0			MKSI270521P00460000
450 P	0	0%	0			MKSI270521P00450000
440 P	0	0%	0			MKSI270521P00440000
430 P	0	0%	0			MKSI270521P00430000
420 P	0	0%	0			MKSI270521P00420000
410 P	0	0%	0			MKSI270521P00410000
400 P	119.22	0%	18	10	06-04	MKSI270521P00400000
390 P	0	0%	0			MKSI270521P00390000
380 P	0	0%	0			MKSI270521P00380000
370 P	0	0%	0			MKSI270521P00370000
360 P	0	0%	0			MKSI270521P00360000
350 P	0	0%	0			MKSI270521P00350000
340 P	0	0%	0			MKSI270521P00340000
330 P	0	0%	0			MKSI270521P00330000
320 P	0	0%	0			MKSI270521P00320000
310 P	0	0%	0			MKSI270521P00310000
300 P	81.20	+40.48%	1	4	09-03	MKSI270521P00300000
290 P	0	0%	0			MKSI270521P00290000
280 P	67.95	+16.75%	1	2	09-14	MKSI270521P00280000
270 P	61.35	0%	1	1	09-14	MKSI270521P00270000
260 P	0	0%	0			MKSI270521P00260000
250 P	0	0%	0			MKSI270521P00250000
240 P	47.05	+17.63%	1	13	09-15	MKSI270521P00240000
230 P	33.90	0%	8	4	08-28	MKSI270521P00230000
220 P	26.15	-12.83%	20	244	09-08	MKSI270521P00220000
210 P	25.50	0%	4	4	08-28	MKSI270521P00210000
200 P	0	0%	0			MKSI270521P00200000
195 P	0	0%	0			MKSI270521P00195000
190 P	0	0%	0			MKSI270521P00190000
185 P	0	0%	0			MKSI270521P00185000
180 P	0	0%	0			MKSI270521P00180000
175 P	0	0%	0			MKSI270521P00175000
170 P	0	0%	0			MKSI270521P00170000
165 P	0	0%	0			MKSI270521P00165000
160 P	11.70	-2.90%	1	1	06-05	MKSI270521P00160000
155 P	0	0%	0			MKSI270521P00155000
150 P	0	0%	0			MKSI270521P00150000
145 P	0	0%	0			MKSI270521P00145000
140 P	0	0%	0			MKSI270521P00140000
135 P	5.60	-9.68%	1	2	08-27	MKSI270521P00135000
130 P	4.80	-5.88%	1	4	08-31	MKSI270521P00130000

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MKSI May 21, 2027 Exp. - Open Interest by Strike

MKSI May 21, 2027 Exp. - Max Pain @ $220.00

MKSI
MKS Inc. Common Stock
stock NASDAQ