MA Options Open Interest by Strike, Oct 21 Settlement
MA open interest settled 2026-10-21 vs 2026-10-20.
Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.
Computed from the Oct 21 settlement. Next update after the Oct 22 settlement, after 5:30 a.m. PT (8:30 a.m. ET) on Friday, Oct 23, 2026.
All archived unexpired expiration/strike/type keys, including unchanged counts. Series sharing that key are combined; roots and deliverables are not retained. Zero-OI keys omitted by the archive are not reconstructed.
This page shows the 6 nearest of 16 expirations, with the 40 strikes nearest the archived reference price (2026-10-21) for each, plus the largest changes across the whole book. The complete book, 1,540 expiration/strike/type keys, is in the Markdown table.
Strike bucket on the horizontal axis, settled open contracts per bucket on the vertical axis. Calls in the accent color; puts in orange. Totals across the 6 nearest expirations, strikes from 498 to 747. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.
MA: largest changes in the full book, settled 2026-10-21 vs 2026-10-20
Strike
Expiry
Type
Prior OI
Settled OI
Change
880
12/17
call
390
231
-159
607.5
11/20
put
16
174
+158
607.5
11/20
call
1
117
+116
622.5
10/23
put
69
170
+101
680
01/15
call
451
511
+60
760
12/15
put
404
463
+59
640
10/23
call
87
144
+57
620
12/18
call
573
517
-56
650
01/15
call
515
570
+55
665
12/18
call
118
171
+53
550
03/19
put
390
433
+43
637.5
10/23
call
71
113
+42
670
11/20
call
331
291
-40
617.5
10/23
put
69
103
+34
600
10/23
call
195
165
-30
Expiration 2026-10-23
MA open interest, settled 2026-10-21, expiration 2026-10-23, strikes 567.5 to 680
Strike
Expiry
Type
Prior OI
Settled OI
Change
567.5
10/23
call
8
8
0
567.5
10/23
put
6
6
0
570
10/23
call
21
21
0
570
10/23
put
95
95
0
572.5
10/23
call
8
8
0
572.5
10/23
put
4
4
0
575
10/23
call
49
48
-1
575
10/23
put
147
148
+1
577.5
10/23
call
3
3
0
577.5
10/23
put
51
51
0
580
10/23
call
58
58
0
580
10/23
put
163
163
0
582.5
10/23
call
3
3
0
582.5
10/23
put
24
25
+1
585
10/23
call
57
57
0
585
10/23
put
49
49
0
587.5
10/23
call
3
3
0
587.5
10/23
put
67
67
0
590
10/23
call
41
41
0
590
10/23
put
281
281
0
592.5
10/23
call
1
1
0
592.5
10/23
put
16
16
0
595
10/23
call
21
21
0
595
10/23
put
205
200
-5
597.5
10/23
call
3
3
0
597.5
10/23
put
25
25
0
600
10/23
call
195
165
-30
600
10/23
put
310
309
-1
602.5
10/23
call
16
16
0
602.5
10/23
put
11
11
0
605
10/23
call
126
125
-1
605
10/23
put
133
139
+6
607.5
10/23
call
118
117
-1
607.5
10/23
put
42
51
+9
610
10/23
call
63
62
-1
610
10/23
put
49
71
+22
612.5
10/23
call
18
19
+1
612.5
10/23
put
105
112
+7
615
10/23
call
113
113
0
615
10/23
put
46
61
+15
617.5
10/23
call
59
62
+3
617.5
10/23
put
69
103
+34
620
10/23
call
124
116
-8
620
10/23
put
102
123
+21
622.5
10/23
call
133
146
+13
622.5
10/23
put
69
170
+101
625
10/23
call
148
139
-9
625
10/23
put
26
26
0
627.5
10/23
call
35
42
+7
630
10/23
call
98
110
+12
630
10/23
put
2
2
0
632.5
10/23
call
51
61
+10
635
10/23
call
127
131
+4
637.5
10/23
call
71
113
+42
640
10/23
call
87
144
+57
642.5
10/23
call
4
4
0
645
10/23
call
103
105
+2
645
10/23
put
1
0
-1
647.5
10/23
call
3
3
0
650
10/23
call
4
4
0
652.5
10/23
call
13
13
0
655
10/23
call
14
14
0
657.5
10/23
call
12
12
0
660
10/23
call
75
75
0
670
10/23
call
1
1
0
680
10/23
call
1
1
0
Expiration 2026-10-30
MA open interest, settled 2026-10-21, expiration 2026-10-30, strikes 562.5 to 682.5
Strike
Expiry
Type
Prior OI
Settled OI
Change
562.5
10/30
call
1
1
0
565
10/30
call
5
5
0
565
10/30
put
31
31
0
567.5
10/30
put
1
1
0
570
10/30
call
25
25
0
570
10/30
put
42
42
0
572.5
10/30
call
1
4
+3
572.5
10/30
put
6
6
0
575
10/30
call
31
32
+1
575
10/30
put
138
144
+6
577.5
10/30
call
4
4
0
577.5
10/30
put
4
4
0
580
10/30
call
113
112
-1
580
10/30
put
52
52
0
582.5
10/30
call
3
2
-1
582.5
10/30
put
16
16
0
585
10/30
call
38
38
0
585
10/30
put
42
42
0
587.5
10/30
call
0
1
+1
587.5
10/30
put
0
1
+1
590
10/30
call
179
178
-1
590
10/30
put
13
13
0
595
10/30
call
50
50
0
595
10/30
put
57
62
+5
600
10/30
call
89
89
0
600
10/30
put
11
11
0
605
10/30
call
32
33
+1
605
10/30
put
8
9
+1
610
10/30
call
135
135
0
610
10/30
put
14
15
+1
612.5
10/30
put
0
2
+2
615
10/30
call
71
97
+26
615
10/30
put
6
6
0
617.5
10/30
call
0
1
+1
617.5
10/30
put
1
1
0
620
10/30
call
67
72
+5
620
10/30
put
12
28
+16
622.5
10/30
call
0
1
+1
622.5
10/30
put
5
7
+2
625
10/30
call
46
53
+7
625
10/30
put
3
10
+7
627.5
10/30
put
3
3
0
630
10/30
call
75
76
+1
630
10/30
put
10
11
+1
632.5
10/30
call
1
1
0
635
10/30
call
30
32
+2
637.5
10/30
call
0
1
+1
640
10/30
call
61
69
+8
640
10/30
put
1
2
+1
642.5
10/30
call
0
7
+7
645
10/30
call
41
41
0
647.5
10/30
call
7
7
0
650
10/30
call
14
21
+7
652.5
10/30
call
0
1
+1
655
10/30
call
41
41
0
660
10/30
call
6
6
0
665
10/30
call
9
9
0
670
10/30
call
14
16
+2
675
10/30
call
10
10
0
680
10/30
call
7
7
0
682.5
10/30
call
11
11
0
Expiration 2026-11-06
MA open interest, settled 2026-10-21, expiration 2026-11-06, strikes 490 to 680
Strike
Expiry
Type
Prior OI
Settled OI
Change
490
11/06
call
1
1
0
500
11/06
call
1
1
0
505
11/06
put
15
15
0
510
11/06
put
17
17
0
515
11/06
put
11
11
0
520
11/06
put
33
33
0
525
11/06
put
133
133
0
530
11/06
call
2
2
0
530
11/06
put
1
1
0
535
11/06
put
10
10
0
540
11/06
put
11
11
0
545
11/06
put
15
15
0
550
11/06
call
1
1
0
550
11/06
put
79
80
+1
555
11/06
put
7
7
0
560
11/06
call
3
3
0
560
11/06
put
22
22
0
565
11/06
call
5
5
0
565
11/06
put
19
19
0
570
11/06
call
16
16
0
570
11/06
put
75
75
0
575
11/06
call
7
7
0
575
11/06
put
11
11
0
580
11/06
call
6
6
0
580
11/06
put
33
33
0
585
11/06
call
14
14
0
585
11/06
put
25
35
+10
590
11/06
call
15
15
0
590
11/06
put
12
12
0
595
11/06
call
32
32
0
595
11/06
put
202
202
0
600
11/06
call
15
14
-1
600
11/06
put
25
26
+1
605
11/06
call
10
10
0
605
11/06
put
2
2
0
607.5
11/06
call
13
13
0
610
11/06
call
48
53
+5
610
11/06
put
5
5
0
612.5
11/06
call
1
1
0
612.5
11/06
put
1
1
0
615
11/06
call
66
66
0
615
11/06
put
23
24
+1
617.5
11/06
call
31
31
0
617.5
11/06
put
2
2
0
620
11/06
call
31
31
0
620
11/06
put
4
4
0
622.5
11/06
call
1
1
0
625
11/06
call
20
20
0
625
11/06
put
36
41
+5
630
11/06
call
22
21
-1
630
11/06
put
2
2
0
632.5
11/06
call
3
3
0
635
11/06
call
1
1
0
640
11/06
call
38
45
+7
640
11/06
put
4
4
0
645
11/06
call
7
7
0
650
11/06
call
2
2
0
660
11/06
put
1
1
0
665
11/06
call
11
11
0
665
11/06
put
1
1
0
680
11/06
call
1
1
0
Expiration 2026-11-13
MA open interest, settled 2026-10-21, expiration 2026-11-13, strikes 500 to 690
Strike
Expiry
Type
Prior OI
Settled OI
Change
500
11/13
put
1
1
0
515
11/13
call
1
1
0
515
11/13
put
1
1
0
520
11/13
put
5
5
0
525
11/13
put
101
101
0
530
11/13
call
2
2
0
530
11/13
put
13
1
-12
535
11/13
put
33
33
0
540
11/13
put
3
3
0
545
11/13
call
5
5
0
545
11/13
put
1
1
0
550
11/13
call
119
119
0
550
11/13
put
11
11
0
555
11/13
put
1
1
0
560
11/13
put
26
26
0
565
11/13
put
22
22
0
570
11/13
call
3
3
0
570
11/13
put
74
74
0
575
11/13
call
7
7
0
575
11/13
put
15
15
0
580
11/13
call
9
9
0
580
11/13
put
21
21
0
585
11/13
call
7
7
0
585
11/13
put
6
6
0
590
11/13
call
3
3
0
590
11/13
put
19
19
0
595
11/13
call
7
8
+1
595
11/13
put
204
204
0
600
11/13
call
46
46
0
600
11/13
put
195
195
0
605
11/13
call
2
2
0
605
11/13
put
89
89
0
610
11/13
call
28
30
+2
610
11/13
put
79
83
+4
615
11/13
call
19
18
-1
615
11/13
put
14
14
0
620
11/13
call
25
25
0
620
11/13
put
57
57
0
625
11/13
call
3
4
+1
630
11/13
call
48
52
+4
630
11/13
put
0
1
+1
635
11/13
call
11
17
+6
640
11/13
call
2
5
+3
645
11/13
call
33
33
0
650
11/13
call
40
40
0
660
11/13
call
4
4
0
690
11/13
call
6
6
0
Expiration 2026-11-20
MA open interest, settled 2026-10-21, expiration 2026-11-20, strikes 550 to 695
Strike
Expiry
Type
Prior OI
Settled OI
Change
550
11/20
call
183
183
0
550
11/20
put
447
447
0
555
11/20
call
137
139
+2
555
11/20
put
362
362
0
560
11/20
call
734
734
0
560
11/20
put
243
243
0
565
11/20
call
95
95
0
565
11/20
put
559
559
0
570
11/20
call
652
652
0
570
11/20
put
384
383
-1
575
11/20
call
183
183
0
575
11/20
put
367
367
0
580
11/20
call
263
261
-2
580
11/20
put
360
360
0
585
11/20
call
162
162
0
585
11/20
put
195
195
0
590
11/20
call
306
306
0
590
11/20
put
134
151
+17
595
11/20
call
294
295
+1
595
11/20
put
88
109
+21
597.5
11/20
put
17
17
0
600
11/20
call
838
838
0
600
11/20
put
426
426
0
602.5
11/20
put
2
2
0
605
11/20
call
249
249
0
605
11/20
put
80
83
+3
607.5
11/20
call
1
117
+116
607.5
11/20
put
16
174
+158
610
11/20
call
384
373
-11
610
11/20
put
169
169
0
612.5
11/20
call
1
1
0
612.5
11/20
put
18
18
0
615
11/20
call
422
419
-3
615
11/20
put
59
63
+4
617.5
11/20
call
13
13
0
617.5
11/20
put
5
4
-1
620
11/20
call
607
612
+5
620
11/20
put
207
228
+21
622.5
11/20
call
1
7
+6
622.5
11/20
put
1
14
+13
625
11/20
call
462
479
+17
625
11/20
put
3
28
+25
627.5
11/20
call
1
15
+14
627.5
11/20
put
9
18
+9
630
11/20
call
368
367
-1
630
11/20
put
13
16
+3
632.5
11/20
call
328
330
+2
632.5
11/20
put
6
13
+7
635
11/20
call
501
501
0
635
11/20
put
2
23
+21
637.5
11/20
put
1
3
+2
640
11/20
call
336
336
0
640
11/20
put
13
14
+1
642.5
11/20
call
4
4
0
642.5
11/20
put
0
1
+1
645
11/20
call
2,072
2,074
+2
650
11/20
call
512
513
+1
650
11/20
put
3
3
0
655
11/20
call
165
167
+2
655
11/20
put
1
1
0
660
11/20
call
143
144
+1
665
11/20
call
522
519
-3
670
11/20
call
331
291
-40
675
11/20
call
31
31
0
680
11/20
call
159
159
0
685
11/20
call
121
126
+5
690
11/20
call
40
46
+6
690
11/20
put
1
1
0
695
11/20
call
53
78
+25
Expiration 2026-11-27
MA open interest, settled 2026-10-21, expiration 2026-11-27, strikes 495 to 700
Strike
Expiry
Type
Prior OI
Settled OI
Change
495
11/27
put
27
27
0
505
11/27
put
2
2
0
510
11/27
put
1
1
0
515
11/27
put
50
50
0
525
11/27
put
7
7
0
540
11/27
put
4
4
0
545
11/27
put
6
6
0
550
11/27
put
1
1
0
555
11/27
put
4
4
0
560
11/27
call
4
4
0
560
11/27
put
1
1
0
565
11/27
put
6
6
0
570
11/27
call
1
1
0
570
11/27
put
9
9
0
575
11/27
call
1
1
0
575
11/27
put
7
7
0
580
11/27
put
2
2
0
585
11/27
call
7
7
0
585
11/27
put
1
1
0
590
11/27
call
5
5
0
595
11/27
call
9
9
0
595
11/27
put
1
1
0
600
11/27
call
8
8
0
600
11/27
put
12
12
0
605
11/27
put
6
6
0
610
11/27
put
6
6
0
615
11/27
call
1
1
0
615
11/27
put
2
2
0
620
11/27
call
10
10
0
620
11/27
put
9
17
+8
625
11/27
call
1
1
0
625
11/27
put
1
1
0
630
11/27
call
4
4
0
635
11/27
call
1
1
0
640
11/27
call
1
1
0
645
11/27
call
15
14
-1
650
11/27
call
21
24
+3
655
11/27
call
1
6
+5
660
11/27
call
6
6
0
665
11/27
call
10
10
0
670
11/27
call
5
5
0
675
11/27
call
7
7
0
700
11/27
call
2
2
0
Later expirations (2026-12-18, 2027-01-15, 2027-03-19, 2027-04-16, 2027-06-17, 2027-09-17, 2027-12-17, 2028-01-21, 2028-12-15, 2029-01-19) and all other strikes are in the Markdown table.