SPY Options Open Interest by Strike, Oct 21 Settlement

SPY 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 32 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, 9,639 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 612 to 918. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

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

Strike	Expiry	Type	Prior OI	Settled OI	Change
760	10/30	put	130,435	75,291	-55,144
745	10/30	put	129,222	81,276	-47,946
767	10/27	put	525	37,241	+36,716
800	11/20	call	53,958	81,279	+27,321
810	12/18	call	79,997	100,675	+20,678
400	11/20	put	77,947	97,843	+19,896
736	11/20	put	26,656	42,953	+16,297
776	10/22	call	1,600	17,145	+15,545
732	11/20	put	24,590	11,668	-12,922
795	11/13	call	1,961	12,172	+10,211
695	12/31	put	1,593	11,643	+10,050
735	12/31	put	1,428	11,092	+9,664
832	10/30	call	5,610	13,818	+8,208
835	10/30	call	4,028	11,968	+7,940
740	10/30	put	50,162	42,232	-7,930

Expiration 2026-10-22

SPY open interest, settled 2026-10-21, expiration 2026-10-22, strikes 745 to 784

Strike	Expiry	Type	Prior OI	Settled OI	Change
745	10/22	call	177	166	-11
745	10/22	put	2,993	2,597	-396
746	10/22	call	390	391	+1
746	10/22	put	846	1,548	+702
747	10/22	call	29	30	+1
747	10/22	put	2,512	4,390	+1,878
748	10/22	call	149	148	-1
748	10/22	put	721	1,314	+593
749	10/22	call	310	312	+2
749	10/22	put	3,623	5,340	+1,717
750	10/22	call	43	47	+4
750	10/22	put	2,262	3,094	+832
751	10/22	call	64	66	+2
751	10/22	put	578	2,822	+2,244
752	10/22	call	128	135	+7
752	10/22	put	1,544	3,610	+2,066
753	10/22	call	90	82	-8
753	10/22	put	745	2,139	+1,394
754	10/22	call	155	157	+2
754	10/22	put	1,264	1,310	+46
755	10/22	call	81	83	+2
755	10/22	put	1,732	2,187	+455
756	10/22	call	42	56	+14
756	10/22	put	921	1,653	+732
757	10/22	call	255	252	-3
757	10/22	put	919	2,455	+1,536
758	10/22	call	454	464	+10
758	10/22	put	1,128	2,423	+1,295
759	10/22	call	291	328	+37
759	10/22	put	944	5,546	+4,602
760	10/22	call	246	291	+45
760	10/22	put	2,587	7,412	+4,825
761	10/22	call	132	157	+25
761	10/22	put	1,169	3,942	+2,773
762	10/22	call	406	438	+32
762	10/22	put	1,914	4,107	+2,193
763	10/22	call	1,015	998	-17
763	10/22	put	1,290	3,080	+1,790
764	10/22	call	360	410	+50
764	10/22	put	1,062	6,143	+5,081
765	10/22	call	800	3,928	+3,128
765	10/22	put	2,288	6,944	+4,656
766	10/22	call	919	968	+49
766	10/22	put	1,243	5,660	+4,417
767	10/22	call	1,262	1,195	-67
767	10/22	put	1,844	3,765	+1,921
768	10/22	call	901	1,269	+368
768	10/22	put	1,805	6,022	+4,217
769	10/22	call	1,698	2,247	+549
769	10/22	put	1,709	5,044	+3,335
770	10/22	call	3,901	6,767	+2,866
770	10/22	put	1,834	7,981	+6,147
771	10/22	call	1,363	6,969	+5,606
771	10/22	put	1,595	5,562	+3,967
772	10/22	call	1,609	4,404	+2,795
772	10/22	put	2,500	8,312	+5,812
773	10/22	call	2,917	5,529	+2,612
773	10/22	put	517	5,119	+4,602
774	10/22	call	4,398	6,408	+2,010
774	10/22	put	1,034	3,732	+2,698
775	10/22	call	6,571	10,174	+3,603
775	10/22	put	1,344	2,873	+1,529
776	10/22	call	1,600	17,145	+15,545
776	10/22	put	663	1,123	+460
777	10/22	call	1,897	4,934	+3,037
777	10/22	put	456	780	+324
778	10/22	call	1,824	6,052	+4,228
778	10/22	put	728	1,061	+333
779	10/22	call	1,855	7,870	+6,015
779	10/22	put	760	902	+142
780	10/22	call	7,580	12,896	+5,316
780	10/22	put	39	210	+171
781	10/22	call	2,892	5,283	+2,391
781	10/22	put	4	249	+245
782	10/22	call	5,585	13,404	+7,819
782	10/22	put	1	31	+30
783	10/22	call	4,025	6,601	+2,576
783	10/22	put	2	3	+1
784	10/22	call	7,786	7,929	+143
784	10/22	put	0	1	+1

Expiration 2026-10-23

SPY open interest, settled 2026-10-21, expiration 2026-10-23, strikes 745 to 784

Strike	Expiry	Type	Prior OI	Settled OI	Change
745	10/23	call	393	385	-8
745	10/23	put	38,052	37,765	-287
746	10/23	call	73	72	-1
746	10/23	put	4,596	4,384	-212
747	10/23	call	227	231	+4
747	10/23	put	7,395	6,660	-735
748	10/23	call	180	176	-4
748	10/23	put	9,033	7,885	-1,148
749	10/23	call	58	57	-1
749	10/23	put	5,971	5,635	-336
750	10/23	call	1,504	1,522	+18
750	10/23	put	15,593	15,401	-192
751	10/23	call	324	323	-1
751	10/23	put	2,713	2,895	+182
752	10/23	call	446	447	+1
752	10/23	put	5,448	4,882	-566
753	10/23	call	363	367	+4
753	10/23	put	7,172	6,866	-306
754	10/23	call	217	211	-6
754	10/23	put	3,028	2,937	-91
755	10/23	call	2,659	2,656	-3
755	10/23	put	12,640	11,846	-794
756	10/23	call	102	100	-2
756	10/23	put	2,282	2,362	+80
757	10/23	call	1,368	1,378	+10
757	10/23	put	6,160	6,760	+600
758	10/23	call	649	643	-6
758	10/23	put	3,891	3,831	-60
759	10/23	call	550	555	+5
759	10/23	put	5,175	4,708	-467
760	10/23	call	1,977	1,798	-179
760	10/23	put	18,427	16,829	-1,598
761	10/23	call	690	843	+153
761	10/23	put	6,632	6,532	-100
762	10/23	call	1,468	1,454	-14
762	10/23	put	12,224	8,898	-3,326
763	10/23	call	1,035	1,106	+71
763	10/23	put	5,188	5,205	+17
764	10/23	call	1,506	1,599	+93
764	10/23	put	5,898	4,646	-1,252
765	10/23	call	3,448	3,363	-85
765	10/23	put	15,311	15,378	+67
766	10/23	call	2,655	2,547	-108
766	10/23	put	2,575	3,148	+573
767	10/23	call	2,355	2,407	+52
767	10/23	put	8,504	9,302	+798
768	10/23	call	4,345	4,432	+87
768	10/23	put	4,042	5,067	+1,025
769	10/23	call	2,778	2,603	-175
769	10/23	put	30,902	24,424	-6,478
770	10/23	call	12,696	9,701	-2,995
770	10/23	put	8,244	8,248	+4
771	10/23	call	5,133	5,780	+647
771	10/23	put	5,176	5,299	+123
772	10/23	call	5,662	4,869	-793
772	10/23	put	2,438	3,748	+1,310
773	10/23	call	5,065	5,004	-61
773	10/23	put	2,968	3,621	+653
774	10/23	call	2,234	3,743	+1,509
774	10/23	put	1,760	6,671	+4,911
775	10/23	call	8,475	8,413	-62
775	10/23	put	3,900	5,311	+1,411
776	10/23	call	4,583	4,271	-312
776	10/23	put	2,157	2,666	+509
777	10/23	call	3,497	4,811	+1,314
777	10/23	put	2,694	3,017	+323
778	10/23	call	8,813	10,782	+1,969
778	10/23	put	1,599	1,955	+356
779	10/23	call	5,923	7,884	+1,961
779	10/23	put	1,532	1,611	+79
780	10/23	call	20,483	24,529	+4,046
780	10/23	put	2,732	2,636	-96
781	10/23	call	3,977	4,643	+666
781	10/23	put	1,121	1,121	0
782	10/23	call	5,443	6,727	+1,284
782	10/23	put	100	97	-3
783	10/23	call	4,794	8,210	+3,416
783	10/23	put	315	322	+7
784	10/23	call	3,590	4,004	+414
784	10/23	put	39	38	-1

Expiration 2026-10-26

SPY open interest, settled 2026-10-21, expiration 2026-10-26, strikes 745 to 784

Strike	Expiry	Type	Prior OI	Settled OI	Change
745	10/26	call	81	86	+5
745	10/26	put	2,270	2,354	+84
746	10/26	call	12	19	+7
746	10/26	put	651	635	-16
747	10/26	call	8	10	+2
747	10/26	put	824	1,093	+269
748	10/26	call	54	56	+2
748	10/26	put	668	750	+82
749	10/26	call	28	29	+1
749	10/26	put	286	515	+229
750	10/26	call	110	111	+1
750	10/26	put	3,946	4,146	+200
751	10/26	call	5	10	+5
751	10/26	put	352	1,342	+990
752	10/26	call	8	14	+6
752	10/26	put	759	574	-185
753	10/26	call	20	20	0
753	10/26	put	1,372	1,440	+68
754	10/26	call	71	71	0
754	10/26	put	1,126	1,853	+727
755	10/26	call	41	38	-3
755	10/26	put	2,119	2,945	+826
756	10/26	call	9	9	0
756	10/26	put	1,392	1,175	-217
757	10/26	call	20	22	+2
757	10/26	put	388	2,756	+2,368
758	10/26	call	55	53	-2
758	10/26	put	816	1,173	+357
759	10/26	call	27	29	+2
759	10/26	put	546	1,232	+686
760	10/26	call	111	116	+5
760	10/26	put	2,169	3,132	+963
761	10/26	call	184	188	+4
761	10/26	put	492	471	-21
762	10/26	call	253	257	+4
762	10/26	put	18,388	17,890	-498
763	10/26	call	226	210	-16
763	10/26	put	840	773	-67
764	10/26	call	391	386	-5
764	10/26	put	680	701	+21
765	10/26	call	377	351	-26
765	10/26	put	1,475	2,126	+651
766	10/26	call	456	445	-11
766	10/26	put	20,117	25,122	+5,005
767	10/26	call	1,311	1,312	+1
767	10/26	put	1,054	3,035	+1,981
768	10/26	call	1,052	1,036	-16
768	10/26	put	1,940	3,204	+1,264
769	10/26	call	1,346	1,277	-69
769	10/26	put	1,217	1,422	+205
770	10/26	call	1,647	2,058	+411
770	10/26	put	2,108	2,227	+119
771	10/26	call	1,221	1,817	+596
771	10/26	put	826	993	+167
772	10/26	call	1,289	1,507	+218
772	10/26	put	771	891	+120
773	10/26	call	769	1,775	+1,006
773	10/26	put	264	484	+220
774	10/26	call	1,358	1,220	-138
774	10/26	put	388	469	+81
775	10/26	call	1,517	1,655	+138
775	10/26	put	460	450	-10
776	10/26	call	688	1,406	+718
776	10/26	put	205	204	-1
777	10/26	call	805	823	+18
777	10/26	put	369	454	+85
778	10/26	call	987	1,317	+330
778	10/26	put	145	156	+11
779	10/26	call	896	1,265	+369
779	10/26	put	99	128	+29
780	10/26	call	4,048	3,620	-428
780	10/26	put	253	281	+28
781	10/26	call	1,329	1,454	+125
781	10/26	put	88	117	+29
782	10/26	call	1,032	1,119	+87
782	10/26	put	11	54	+43
783	10/26	call	571	869	+298
783	10/26	put	1	12	+11
784	10/26	call	1,736	1,855	+119
784	10/26	put	43	45	+2

Expiration 2026-10-27

SPY open interest, settled 2026-10-21, expiration 2026-10-27, strikes 745 to 784

Strike	Expiry	Type	Prior OI	Settled OI	Change
745	10/27	call	11	14	+3
745	10/27	put	600	1,024	+424
746	10/27	call	8	9	+1
746	10/27	put	900	959	+59
747	10/27	call	5	8	+3
747	10/27	put	975	940	-35
748	10/27	call	5	8	+3
748	10/27	put	534	582	+48
749	10/27	call	14	22	+8
749	10/27	put	439	487	+48
750	10/27	call	11	10	-1
750	10/27	put	705	986	+281
751	10/27	call	9	13	+4
751	10/27	put	267	262	-5
752	10/27	call	3	12	+9
752	10/27	put	262	261	-1
753	10/27	call	10	11	+1
753	10/27	put	529	541	+12
754	10/27	call	5	25	+20
754	10/27	put	501	500	-1
755	10/27	call	30	42	+12
755	10/27	put	796	1,100	+304
756	10/27	call	13	16	+3
756	10/27	put	313	566	+253
757	10/27	call	196	203	+7
757	10/27	put	508	527	+19
758	10/27	call	32	33	+1
758	10/27	put	804	1,119	+315
759	10/27	call	27	27	0
759	10/27	put	638	954	+316
760	10/27	call	232	232	0
760	10/27	put	1,154	2,113	+959
761	10/27	call	80	80	0
761	10/27	put	476	539	+63
762	10/27	call	327	299	-28
762	10/27	put	526	979	+453
763	10/27	call	166	156	-10
763	10/27	put	417	566	+149
764	10/27	call	553	540	-13
764	10/27	put	1,025	1,024	-1
765	10/27	call	232	242	+10
765	10/27	put	1,186	1,334	+148
766	10/27	call	536	528	-8
766	10/27	put	1,010	932	-78
767	10/27	call	669	675	+6
767	10/27	put	525	37,241	+36,716
768	10/27	call	1,161	955	-206
768	10/27	put	837	785	-52
769	10/27	call	744	819	+75
769	10/27	put	825	1,081	+256
770	10/27	call	1,153	1,134	-19
770	10/27	put	905	1,076	+171
771	10/27	call	938	924	-14
771	10/27	put	443	661	+218
772	10/27	call	1,295	1,380	+85
772	10/27	put	262	537	+275
773	10/27	call	1,052	1,502	+450
773	10/27	put	91	556	+465
774	10/27	call	627	878	+251
774	10/27	put	105	372	+267
775	10/27	call	693	713	+20
775	10/27	put	209	263	+54
776	10/27	call	425	658	+233
776	10/27	put	95	104	+9
777	10/27	call	496	577	+81
777	10/27	put	41	58	+17
778	10/27	call	687	748	+61
778	10/27	put	49	61	+12
779	10/27	call	489	651	+162
779	10/27	put	17	59	+42
780	10/27	call	819	1,226	+407
780	10/27	put	122	138	+16
781	10/27	call	703	755	+52
781	10/27	put	6	16	+10
782	10/27	call	794	771	-23
782	10/27	put	2	17	+15
783	10/27	call	1,121	1,169	+48
783	10/27	put	1	7	+6
784	10/27	call	660	748	+88
784	10/27	put	0	21	+21

Expiration 2026-10-28

SPY open interest, settled 2026-10-21, expiration 2026-10-28, strikes 745 to 784

Strike	Expiry	Type	Prior OI	Settled OI	Change
745	10/28	call	0	5	+5
745	10/28	put	930	1,434	+504
746	10/28	call	1	7	+6
746	10/28	put	344	475	+131
747	10/28	call	1	11	+10
747	10/28	put	261	821	+560
748	10/28	call	0	10	+10
748	10/28	put	113	416	+303
749	10/28	call	0	6	+6
749	10/28	put	72	452	+380
750	10/28	call	3	6	+3
750	10/28	put	1,934	1,663	-271
751	10/28	call	1	10	+9
751	10/28	put	356	431	+75
752	10/28	call	0	9	+9
752	10/28	put	353	503	+150
753	10/28	call	63	67	+4
753	10/28	put	336	461	+125
754	10/28	call	5	10	+5
754	10/28	put	539	736	+197
755	10/28	call	53	57	+4
755	10/28	put	827	768	-59
756	10/28	call	13	13	0
756	10/28	put	375	415	+40
757	10/28	call	12	30	+18
757	10/28	put	360	402	+42
758	10/28	call	25	26	+1
758	10/28	put	398	545	+147
759	10/28	call	21	20	-1
759	10/28	put	366	753	+387
760	10/28	call	277	277	0
760	10/28	put	774	3,031	+2,257
761	10/28	call	137	129	-8
761	10/28	put	446	482	+36
762	10/28	call	153	164	+11
762	10/28	put	275	547	+272
763	10/28	call	158	232	+74
763	10/28	put	224	309	+85
764	10/28	call	148	139	-9
764	10/28	put	307	384	+77
765	10/28	call	250	300	+50
765	10/28	put	1,002	1,043	+41
766	10/28	call	398	404	+6
766	10/28	put	1,218	1,158	-60
767	10/28	call	565	589	+24
767	10/28	put	1,007	969	-38
768	10/28	call	282	482	+200
768	10/28	put	735	827	+92
769	10/28	call	975	1,140	+165
769	10/28	put	1,066	1,222	+156
770	10/28	call	1,174	1,294	+120
770	10/28	put	1,656	1,595	-61
771	10/28	call	760	1,068	+308
771	10/28	put	1,126	1,518	+392
772	10/28	call	1,224	1,528	+304
772	10/28	put	223	508	+285
773	10/28	call	956	978	+22
773	10/28	put	347	575	+228
774	10/28	call	389	538	+149
774	10/28	put	178	826	+648
775	10/28	call	1,537	1,879	+342
775	10/28	put	121	641	+520
776	10/28	call	523	936	+413
776	10/28	put	29	183	+154
777	10/28	call	454	463	+9
777	10/28	put	21	70	+49
778	10/28	call	381	487	+106
778	10/28	put	243	244	+1
779	10/28	call	1,027	997	-30
779	10/28	put	10	17	+7
780	10/28	call	1,211	1,369	+158
780	10/28	put	10	14	+4
781	10/28	call	406	571	+165
781	10/28	put	16	35	+19
782	10/28	call	331	393	+62
782	10/28	put	8	14	+6
783	10/28	call	922	966	+44
783	10/28	put	6	6	0
784	10/28	call	605	758	+153
784	10/28	put	6	7	+1

Expiration 2026-10-29

SPY open interest, settled 2026-10-21, expiration 2026-10-29, strikes 745 to 784

Strike	Expiry	Type	Prior OI	Settled OI	Change
745	10/29	call	1	1	0
745	10/29	put	726	799	+73
746	10/29	put	185	179	-6
747	10/29	put	154	154	0
748	10/29	call	1	2	+1
748	10/29	put	2,553	2,592	+39
749	10/29	put	92	139	+47
750	10/29	call	6	7	+1
750	10/29	put	412	426	+14
751	10/29	put	71	83	+12
752	10/29	put	89	147	+58
753	10/29	call	2	2	0
753	10/29	put	208	206	-2
754	10/29	put	448	489	+41
755	10/29	call	6	5	-1
755	10/29	put	423	1,039	+616
756	10/29	call	1	1	0
756	10/29	put	120	141	+21
757	10/29	call	3	3	0
757	10/29	put	282	291	+9
758	10/29	call	4	4	0
758	10/29	put	155	158	+3
759	10/29	call	3	3	0
759	10/29	put	189	216	+27
760	10/29	call	42	38	-4
760	10/29	put	784	846	+62
761	10/29	call	108	108	0
761	10/29	put	81	118	+37
762	10/29	call	47	44	-3
762	10/29	put	171	180	+9
763	10/29	call	128	127	-1
763	10/29	put	471	491	+20
764	10/29	call	261	260	-1
764	10/29	put	184	196	+12
765	10/29	call	161	161	0
765	10/29	put	781	1,040	+259
766	10/29	call	93	86	-7
766	10/29	put	222	272	+50
767	10/29	call	200	207	+7
767	10/29	put	386	1,128	+742
768	10/29	call	168	165	-3
768	10/29	put	285	387	+102
769	10/29	call	130	134	+4
769	10/29	put	355	404	+49
770	10/29	call	602	625	+23
770	10/29	put	566	625	+59
771	10/29	call	354	377	+23
771	10/29	put	348	590	+242
772	10/29	call	239	290	+51
772	10/29	put	58	221	+163
773	10/29	call	120	269	+149
773	10/29	put	149	363	+214
774	10/29	call	387	435	+48
774	10/29	put	115	213	+98
775	10/29	call	1,317	1,137	-180
775	10/29	put	51	107	+56
776	10/29	call	303	335	+32
776	10/29	put	21	26	+5
777	10/29	call	319	363	+44
777	10/29	put	12	22	+10
778	10/29	call	414	436	+22
778	10/29	put	6	15	+9
779	10/29	call	347	343	-4
779	10/29	put	4	4	0
780	10/29	call	490	556	+66
780	10/29	put	80	82	+2
781	10/29	call	362	372	+10
781	10/29	put	13	13	0
782	10/29	call	651	683	+32
782	10/29	put	10	12	+2
783	10/29	call	475	646	+171
783	10/29	put	1	1	0
784	10/29	call	453	459	+6

Later expirations (2026-10-30, 2026-11-02, 2026-11-03, 2026-11-04, 2026-11-06, 2026-11-13, 2026-11-20, 2026-11-27, 2026-11-30, 2026-12-18, 2026-12-31, 2027-01-15, 2027-01-29, 2027-02-19, 2027-02-26, 2027-03-19, 2027-03-31, 2027-06-17, 2027-06-30, 2027-09-17, 2027-09-30, 2027-12-17, 2028-01-21, 2028-06-16, 2028-12-15, 2029-01-19) and all other strikes are in the Markdown table.

Markdown table | Open interest changes across symbols

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