CMG Options Open Interest by Strike, Oct 21 Settlement

CMG 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 13 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, 753 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 22 to 34. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

CMG: largest changes in the full book, settled 2026-10-21 vs 2026-10-20

Strike	Expiry	Type	Prior OI	Settled OI	Change
24	11/06	put	9	28,775	+28,766
25	12/18	put	51,852	70,352	+18,500
40	12/18	put	6,722	83	-6,639
30	10/23	call	1,254	6,159	+4,905
25	06/17	put	4,806	8,546	+3,740
27	10/30	put	18,839	15,743	-3,096
28.5	10/23	call	4	2,880	+2,876
32.5	01/15	call	3,765	6,590	+2,825
28	10/23	put	522	2,425	+1,903
30	01/15	call	6,334	8,110	+1,776
29	10/23	put	4,207	2,958	-1,249
27	10/30	call	53	1,268	+1,215
28	11/20	put	37	1,229	+1,192
28.5	10/30	call	0	1,179	+1,179
26	10/30	call	34	1,204	+1,170

Expiration 2026-10-23

CMG open interest, settled 2026-10-21, expiration 2026-10-23, strikes 20 to 48

Strike	Expiry	Type	Prior OI	Settled OI	Change
20	10/23	call	4	5	+1
20	10/23	put	37	37	0
21	10/23	call	9	11	+2
21	10/23	put	42	41	-1
22	10/23	call	4	7	+3
22	10/23	put	21	13	-8
23	10/23	call	6	10	+4
23	10/23	put	11	23	+12
24	10/23	call	9	12	+3
24	10/23	put	170	170	0
25	10/23	call	30	45	+15
25	10/23	put	156	159	+3
26	10/23	call	15	15	0
26	10/23	put	376	398	+22
27	10/23	call	20	227	+207
27	10/23	put	380	558	+178
27.5	10/23	call	8	116	+108
27.5	10/23	put	127	1,173	+1,046
28	10/23	call	65	876	+811
28	10/23	put	522	2,425	+1,903
28.5	10/23	call	4	2,880	+2,876
28.5	10/23	put	860	1,018	+158
29	10/23	call	232	743	+511
29	10/23	put	4,207	2,958	-1,249
29.5	10/23	call	1,984	2,152	+168
29.5	10/23	put	997	955	-42
30	10/23	call	1,254	6,159	+4,905
30	10/23	put	1,474	1,243	-231
30.5	10/23	call	3,514	3,502	-12
30.5	10/23	put	355	330	-25
31	10/23	call	3,389	3,364	-25
31	10/23	put	787	627	-160
31.5	10/23	call	922	906	-16
31.5	10/23	put	302	13	-289
32	10/23	call	3,881	3,978	+97
32	10/23	put	561	455	-106
32.5	10/23	call	777	794	+17
32.5	10/23	put	56	51	-5
33	10/23	call	969	969	0
33	10/23	put	211	161	-50
33.5	10/23	call	222	220	-2
33.5	10/23	put	39	38	-1
34	10/23	call	8,225	8,213	-12
34	10/23	put	166	95	-71
34.5	10/23	call	721	721	0
34.5	10/23	put	1	0	-1
35	10/23	call	1,449	1,448	-1
35	10/23	put	6	0	-6
35.5	10/23	call	925	925	0
36	10/23	call	356	356	0
36	10/23	put	2	0	-2
36.5	10/23	call	37	37	0
36.5	10/23	put	1	1	0
37	10/23	call	283	283	0
37	10/23	put	1	1	0
37.5	10/23	call	176	176	0
38	10/23	call	854	854	0
38	10/23	put	3	2	-1
39	10/23	call	419	418	-1
40	10/23	call	389	389	0
40	10/23	put	1	1	0
41	10/23	call	144	144	0
41	10/23	put	0	1	+1
42	10/23	call	54	54	0
43	10/23	call	56	56	0
43	10/23	put	1	1	0
44	10/23	call	405	405	0
44	10/23	put	1	0	-1
45	10/23	call	9	9	0
46	10/23	call	13	20	+7
47	10/23	call	39	39	0
47	10/23	put	1	0	-1
48	10/23	call	3	3	0

Expiration 2026-10-30

CMG open interest, settled 2026-10-21, expiration 2026-10-30, strikes 20 to 47

Strike	Expiry	Type	Prior OI	Settled OI	Change
20	10/30	call	2	2	0
20	10/30	put	15	15	0
21	10/30	put	14	39	+25
22	10/30	put	2	34	+32
23	10/30	call	0	6	+6
23	10/30	put	9	10	+1
24	10/30	call	5	6	+1
24	10/30	put	73	112	+39
25	10/30	call	82	82	0
25	10/30	put	331	364	+33
25.5	10/30	call	2	2	0
25.5	10/30	put	3	19	+16
26	10/30	call	34	1,204	+1,170
26	10/30	put	94	499	+405
26.5	10/30	call	1	1	0
26.5	10/30	put	3	36	+33
27	10/30	call	53	1,268	+1,215
27	10/30	put	18,839	15,743	-3,096
27.5	10/30	call	0	23	+23
27.5	10/30	put	147	607	+460
28	10/30	call	143	444	+301
28	10/30	put	49,073	49,314	+241
28.5	10/30	call	0	1,179	+1,179
28.5	10/30	put	11	273	+262
29	10/30	call	62	211	+149
29	10/30	put	1,806	1,848	+42
29.5	10/30	call	72	489	+417
29.5	10/30	put	379	385	+6
30	10/30	call	952	1,840	+888
30	10/30	put	2,236	2,242	+6
30.5	10/30	call	747	889	+142
30.5	10/30	put	569	567	-2
31	10/30	call	637	648	+11
31	10/30	put	729	715	-14
31.5	10/30	call	133	601	+468
31.5	10/30	put	119	113	-6
32	10/30	call	1,038	1,320	+282
32	10/30	put	996	1,002	+6
32.5	10/30	call	454	470	+16
32.5	10/30	put	35	55	+20
33	10/30	call	897	1,202	+305
33	10/30	put	1,102	1,100	-2
33.5	10/30	call	99	200	+101
33.5	10/30	put	27	28	+1
34	10/30	call	1,400	1,357	-43
34	10/30	put	175	175	0
34.5	10/30	call	76	75	-1
35	10/30	call	981	939	-42
35	10/30	put	155	155	0
35.5	10/30	call	20	21	+1
36	10/30	call	745	740	-5
36	10/30	put	37	32	-5
36.5	10/30	call	212	212	0
36.5	10/30	put	1	0	-1
37	10/30	call	532	555	+23
37	10/30	put	38	3	-35
38	10/30	call	245	238	-7
38	10/30	put	6	4	-2
39	10/30	call	498	495	-3
40	10/30	call	1,290	1,294	+4
41	10/30	call	878	878	0
42	10/30	call	318	318	0
43	10/30	call	81	79	-2
44	10/30	call	28	28	0
45	10/30	call	19	19	0
46	10/30	call	592	592	0
47	10/30	call	27	27	0

Expiration 2026-11-06

CMG open interest, settled 2026-10-21, expiration 2026-11-06, strikes 20 to 45

Strike	Expiry	Type	Prior OI	Settled OI	Change
20	11/06	put	6	6	0
21	11/06	put	15	15	0
23	11/06	put	0	6	+6
24	11/06	call	4	4	0
24	11/06	put	9	28,775	+28,766
25	11/06	call	30	30	0
25	11/06	put	56,253	56,265	+12
26	11/06	call	1	23	+22
26	11/06	put	774	790	+16
27	11/06	call	4	17	+13
27	11/06	put	550	577	+27
27.5	11/06	call	0	4	+4
27.5	11/06	put	3	98	+95
28	11/06	call	20	60	+40
28	11/06	put	282	371	+89
28.5	11/06	call	0	96	+96
28.5	11/06	put	38	69	+31
29	11/06	call	2	57	+55
29	11/06	put	453	472	+19
29.5	11/06	call	212	209	-3
29.5	11/06	put	43	52	+9
30	11/06	call	385	499	+114
30	11/06	put	243	253	+10
30.5	11/06	call	9	83	+74
30.5	11/06	put	8	8	0
31	11/06	call	622	652	+30
31	11/06	put	199	194	-5
31.5	11/06	call	1	29	+28
32	11/06	call	335	332	-3
32	11/06	put	204	206	+2
32.5	11/06	call	21	23	+2
33	11/06	call	835	744	-91
33	11/06	put	75	75	0
33.5	11/06	call	30	31	+1
34	11/06	call	769	771	+2
34	11/06	put	40	40	0
34.5	11/06	call	7	11	+4
35	11/06	call	365	364	-1
35	11/06	put	17	14	-3
35.5	11/06	call	2	3	+1
36	11/06	call	97	98	+1
36	11/06	put	3	3	0
36.5	11/06	call	2	5	+3
37	11/06	call	186	185	-1
37	11/06	put	2	1	-1
38	11/06	call	107	110	+3
38	11/06	put	1	0	-1
39	11/06	call	20	20	0
40	11/06	call	178	294	+116
40	11/06	put	2	2	0
41	11/06	call	4	4	0
42	11/06	call	108	109	+1
43	11/06	call	6	6	0
44	11/06	call	5	6	+1
45	11/06	call	37	37	0

Expiration 2026-11-13

CMG open interest, settled 2026-10-21, expiration 2026-11-13, strikes 20 to 42

Strike	Expiry	Type	Prior OI	Settled OI	Change
20	11/13	put	13	13	0
21	11/13	call	1	1	0
23	11/13	put	5	7	+2
24	11/13	call	3	3	0
24	11/13	put	7	12	+5
25	11/13	call	3	4	+1
25	11/13	put	50,118	50,131	+13
26	11/13	call	10	10	0
26	11/13	put	224	267	+43
27	11/13	call	4	4	0
27	11/13	put	3,949	3,837	-112
28	11/13	call	72	190	+118
28	11/13	put	303	340	+37
29	11/13	call	44	49	+5
29	11/13	put	114	125	+11
30	11/13	call	155	164	+9
30	11/13	put	422	423	+1
31	11/13	call	307	314	+7
31	11/13	put	45	45	0
32	11/13	call	175	168	-7
32	11/13	put	30	31	+1
33	11/13	call	168	168	0
33	11/13	put	10	15	+5
34	11/13	call	382	381	-1
34	11/13	put	13	18	+5
35	11/13	call	332	242	-90
35	11/13	put	40	40	0
36	11/13	call	60	53	-7
36	11/13	put	11	11	0
37	11/13	call	51	52	+1
37	11/13	put	2	2	0
38	11/13	call	44	44	0
39	11/13	call	30	30	0
40	11/13	call	731	731	0
41	11/13	call	14	14	0
42	11/13	call	43	43	0

Expiration 2026-11-20

CMG open interest, settled 2026-10-21, expiration 2026-11-20, strikes 15 to 50

Strike	Expiry	Type	Prior OI	Settled OI	Change
15	11/20	call	0	12	+12
17.5	11/20	call	4	4	0
17.5	11/20	put	11	11	0
20	11/20	call	5	5	0
20	11/20	put	143	161	+18
22	11/20	put	0	113	+113
22.5	11/20	call	1	1	0
22.5	11/20	put	38	39	+1
23	11/20	call	0	12	+12
23	11/20	put	0	4	+4
24	11/20	put	24	65	+41
25	11/20	call	66	104	+38
25	11/20	put	2,860	3,111	+251
26	11/20	call	0	1	+1
26	11/20	put	703	1,091	+388
27	11/20	call	0	156	+156
27	11/20	put	1,169	1,276	+107
27.5	11/20	call	217	217	0
27.5	11/20	put	22,723	22,824	+101
28	11/20	call	1	547	+546
28	11/20	put	37	1,229	+1,192
28.5	11/20	call	0	784	+784
28.5	11/20	put	84	621	+537
29	11/20	call	0	461	+461
29	11/20	put	12	12	0
29.5	11/20	call	27	112	+85
29.5	11/20	put	240	234	-6
30	11/20	call	2,223	2,713	+490
30	11/20	put	9,916	9,910	-6
30.5	11/20	call	171	238	+67
30.5	11/20	put	9	11	+2
31	11/20	call	195	208	+13
31	11/20	put	30	45	+15
31.5	11/20	call	44	107	+63
31.5	11/20	put	3	11	+8
32	11/20	call	238	292	+54
32	11/20	put	2	12	+10
32.5	11/20	call	6,960	7,002	+42
32.5	11/20	put	6,207	6,120	-87
33	11/20	call	120	202	+82
33.5	11/20	call	166	166	0
34	11/20	call	178	191	+13
34	11/20	put	1	1	0
34.5	11/20	call	70	67	-3
35	11/20	call	3,853	3,809	-44
35	11/20	put	495	487	-8
35.5	11/20	call	42	42	0
36	11/20	call	32	37	+5
36.5	11/20	call	8	8	0
37	11/20	call	24	27	+3
37	11/20	put	0	1	+1
37.5	11/20	call	1,806	1,783	-23
37.5	11/20	put	166	57	-109
38	11/20	call	1	0	-1
38	11/20	put	32	32	0
39	11/20	call	3	3	0
39	11/20	put	3	0	-3
40	11/20	call	2,431	2,429	-2
40	11/20	put	3	3	0
42.5	11/20	call	436	436	0
45	11/20	call	269	269	0
47.5	11/20	call	8	8	0
50	11/20	call	157	157	0

Expiration 2026-11-27

CMG open interest, settled 2026-10-21, expiration 2026-11-27, strikes 20 to 41

Strike	Expiry	Type	Prior OI	Settled OI	Change
20	11/27	call	2	2	0
20	11/27	put	0	1	+1
22	11/27	put	67	67	0
23	11/27	put	6	8	+2
24	11/27	put	39	43	+4
25	11/27	call	0	1	+1
25	11/27	put	11	41	+30
26	11/27	put	72	94	+22
27	11/27	call	0	6	+6
27	11/27	put	25	76	+51
28	11/27	call	1	11	+10
28	11/27	put	97	146	+49
29	11/27	call	5	13	+8
29	11/27	put	32	85	+53
30	11/27	call	61	164	+103
30	11/27	put	40	168	+128
31	11/27	call	18	42	+24
31	11/27	put	3	3	0
32	11/27	call	131	196	+65
32	11/27	put	23	48	+25
33	11/27	call	144	144	0
33	11/27	put	40	40	0
34	11/27	call	121	136	+15
34	11/27	put	12	12	0
35	11/27	call	73	88	+15
35	11/27	put	7	8	+1
36	11/27	call	22	22	0
37	11/27	call	49	49	0
38	11/27	call	9	9	0
38	11/27	put	10	10	0
39	11/27	call	82	82	0
40	11/27	call	36	37	+1
40	11/27	put	3	0	-3
41	11/27	call	8	8	0

Later expirations (2026-12-18, 2027-01-15, 2027-03-19, 2027-06-17, 2027-09-17, 2028-01-21, 2029-01-19) and all other strikes are in the Markdown table.

Markdown table | Open interest changes across symbols

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