ET Options Open Interest by Strike, Oct 21 Settlement
ET 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 15 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, 395 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 16 to 24. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.
ET: largest changes in the full book, settled 2026-10-21 vs 2026-10-20
Strike
Expiry
Type
Prior OI
Settled OI
Change
21
12/18
call
7,341
9,376
+2,035
23
12/18
call
3,159
4,111
+952
21
10/30
call
2,069
2,467
+398
22
12/18
call
11,901
12,169
+268
22
01/15
call
72,246
72,453
+207
20
12/15
call
4,537
4,349
-188
20
10/23
put
1,007
1,179
+172
23
11/20
call
1,875
2,028
+153
20
11/20
put
1,428
1,571
+143
20
10/23
call
654
783
+129
20
12/18
put
1,348
1,472
+124
20.5
10/30
call
1,404
1,515
+111
20
11/20
call
1,679
1,786
+107
24
06/17
call
95
198
+103
20
03/19
call
1,537
1,638
+101
Expiration 2026-10-23
ET open interest, settled 2026-10-21, expiration 2026-10-23, strikes 12 to 30
Strike
Expiry
Type
Prior OI
Settled OI
Change
12
10/23
call
0
1
+1
12
10/23
put
4
9
+5
13
10/23
put
4
9
+5
14
10/23
call
23
24
+1
15
10/23
call
23
32
+9
15
10/23
put
13
15
+2
15.5
10/23
call
1
8
+7
15.5
10/23
put
13
15
+2
16
10/23
call
1
3
+2
16
10/23
put
28
30
+2
16.5
10/23
call
2
3
+1
16.5
10/23
put
17
20
+3
17
10/23
call
1
3
+2
17
10/23
put
7
7
0
17.5
10/23
call
1
1
0
17.5
10/23
put
36
36
0
18
10/23
call
19
21
+2
18
10/23
put
9
9
0
18.5
10/23
call
4
4
0
18.5
10/23
put
23
23
0
19
10/23
call
75
75
0
19
10/23
put
78
78
0
19.5
10/23
call
58
48
-10
19.5
10/23
put
1,228
1,279
+51
20
10/23
call
654
783
+129
20
10/23
put
1,007
1,179
+172
20.5
10/23
call
5,919
5,960
+41
20.5
10/23
put
190
187
-3
21
10/23
call
3,059
3,063
+4
21
10/23
put
114
34
-80
21.5
10/23
call
1,732
1,732
0
21.5
10/23
put
2
2
0
22
10/23
call
570
570
0
22.5
10/23
call
163
163
0
23
10/23
call
61
61
0
23
10/23
put
1
1
0
23.5
10/23
call
12
12
0
23.5
10/23
put
2
1
-1
24
10/23
call
2
2
0
24.5
10/23
call
4
4
0
25
10/23
call
2
2
0
25
10/23
put
1
1
0
25.5
10/23
call
2
2
0
25.5
10/23
put
1
1
0
26
10/23
call
2
2
0
26.5
10/23
call
2
2
0
26.5
10/23
put
1
4
+3
30
10/23
call
1
1
0
Expiration 2026-10-30
ET open interest, settled 2026-10-21, expiration 2026-10-30, strikes 12 to 30
Strike
Expiry
Type
Prior OI
Settled OI
Change
12
10/30
call
5
5
0
12
10/30
put
9
14
+5
13
10/30
call
1
1
0
13
10/30
put
9
14
+5
16
10/30
put
8
8
0
16.5
10/30
put
1
1
0
17
10/30
put
3
3
0
17.5
10/30
put
9
9
0
18
10/30
call
2
2
0
18
10/30
put
820
820
0
18.5
10/30
put
250
250
0
19
10/30
call
205
205
0
19
10/30
put
34
35
+1
19.5
10/30
call
52
68
+16
19.5
10/30
put
528
532
+4
20
10/30
call
2,584
2,599
+15
20
10/30
put
653
655
+2
20.5
10/30
call
1,404
1,515
+111
20.5
10/30
put
225
225
0
21
10/30
call
2,069
2,467
+398
21
10/30
put
154
144
-10
21.5
10/30
call
1,997
1,957
-40
21.5
10/30
put
3
3
0
22
10/30
call
574
574
0
22.5
10/30
call
846
846
0
23
10/30
call
17
17
0
23.5
10/30
call
4
4
0
24
10/30
call
2
2
0
24
10/30
put
1
1
0
24.5
10/30
call
1
1
0
25
10/30
call
2
2
0
25.5
10/30
call
2
2
0
26
10/30
call
1
1
0
26.5
10/30
call
1
1
0
30
10/30
call
1
1
0
Expiration 2026-11-06
ET open interest, settled 2026-10-21, expiration 2026-11-06, strikes 12 to 23
Strike
Expiry
Type
Prior OI
Settled OI
Change
12
11/06
call
5
5
0
13
11/06
call
1
1
0
16
11/06
put
2
2
0
16.5
11/06
put
0
1
+1
17
11/06
call
1
1
0
17
11/06
put
12
12
0
17.5
11/06
put
13
13
0
18
11/06
call
1
1
0
18
11/06
put
37
37
0
18.5
11/06
call
11
11
0
18.5
11/06
put
40
40
0
19
11/06
call
29
29
0
19
11/06
put
25
53
+28
19.5
11/06
call
44
48
+4
19.5
11/06
put
470
472
+2
20
11/06
call
333
337
+4
20
11/06
put
655
685
+30
20.5
11/06
call
650
664
+14
20.5
11/06
put
169
170
+1
21
11/06
call
2,205
2,106
-99
21
11/06
put
145
145
0
21.5
11/06
call
402
402
0
21.5
11/06
put
5
5
0
22
11/06
call
446
446
0
22
11/06
put
13
13
0
22.5
11/06
call
108
108
0
23
11/06
call
9
9
0
Expiration 2026-11-13
ET open interest, settled 2026-10-21, expiration 2026-11-13, strikes 16 to 23
Strike
Expiry
Type
Prior OI
Settled OI
Change
16
11/13
put
1
1
0
17
11/13
put
18
18
0
17.5
11/13
put
10
10
0
18
11/13
put
50
51
+1
18.5
11/13
put
43
43
0
19
11/13
call
55
56
+1
19
11/13
put
109
139
+30
19.5
11/13
call
1
1
0
19.5
11/13
put
43
43
0
20
11/13
call
12
37
+25
20
11/13
put
300
297
-3
20.5
11/13
call
142
144
+2
20.5
11/13
put
34
34
0
21
11/13
call
676
678
+2
21.5
11/13
call
301
310
+9
21.5
11/13
put
3
3
0
22
11/13
call
305
307
+2
22.5
11/13
call
2
2
0
23
11/13
call
1
1
0
Expiration 2026-11-20
ET open interest, settled 2026-10-21, expiration 2026-11-20, strikes 13 to 24
Strike
Expiry
Type
Prior OI
Settled OI
Change
13
11/20
call
1
1
0
13
11/20
put
0
1
+1
14
11/20
call
10
10
0
14
11/20
put
0
1
+1
15
11/20
call
1
1
0
15
11/20
put
12
12
0
17
11/20
put
51
51
0
17.5
11/20
put
1
3
+2
18
11/20
put
997
997
0
18.5
11/20
put
5
14
+9
19
11/20
call
432
432
0
19
11/20
put
995
1,006
+11
19.5
11/20
put
14
26
+12
20
11/20
call
1,679
1,786
+107
20
11/20
put
1,428
1,571
+143
20.5
11/20
call
35
89
+54
21
11/20
call
42,191
42,217
+26
21
11/20
put
677
674
-3
21.5
11/20
call
169
190
+21
22
11/20
call
12,773
12,786
+13
22
11/20
put
11
11
0
23
11/20
call
1,875
2,028
+153
24
11/20
call
303
303
0
Expiration 2026-11-27
ET open interest, settled 2026-10-21, expiration 2026-11-27, strikes 17 to 22
Strike
Expiry
Type
Prior OI
Settled OI
Change
17
11/27
put
6
6
0
17.5
11/27
put
13
13
0
18
11/27
put
40
40
0
18.5
11/27
put
40
40
0
19
11/27
call
32
32
0
19
11/27
put
35
35
0
19.5
11/27
put
7
7
0
20
11/27
call
60
60
0
20
11/27
put
70
70
0
20.5
11/27
call
367
386
+19
20.5
11/27
put
0
1
+1
21
11/27
call
48
60
+12
21
11/27
put
4
12
+8
21.5
11/27
call
215
224
+9
22
11/27
call
140
140
0
Later expirations (2026-12-18, 2027-01-15, 2027-03-19, 2027-04-16, 2027-06-17, 2027-09-17, 2028-01-21, 2028-12-15, 2029-01-19) and all other strikes are in the Markdown table.