SPGI Options Open Interest by Strike, Oct 21 Settlement

SPGI 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, 936 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 355 to 532. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

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

Strike	Expiry	Type	Prior OI	Settled OI	Change
452.5	10/23	call	4	221	+217
447.5	10/23	call	1	214	+213
447.5	10/23	put	0	213	+213
480	11/20	call	260	333	+73
390	10/30	put	429	480	+51
375	11/13	put	12	46	+34
360	12/18	put	94	66	-28
370	12/18	put	163	136	-27
400	12/18	put	415	388	-27
455	10/30	call	12	37	+25
380	11/20	put	221	196	-25
380	12/18	put	125	103	-22
380	10/30	put	144	163	+19
440	01/15	call	95	108	+13
387.5	10/30	put	5	17	+12

Expiration 2026-10-23

SPGI open interest, settled 2026-10-21, expiration 2026-10-23, strikes 365 to 480

Strike	Expiry	Type	Prior OI	Settled OI	Change
365	10/23	put	73	73	0
367.5	10/23	put	61	61	0
370	10/23	put	73	73	0
372.5	10/23	put	3	3	0
375	10/23	put	46	46	0
377.5	10/23	put	7	7	0
380	10/23	put	146	146	0
382.5	10/23	put	1	1	0
385	10/23	call	1	1	0
385	10/23	put	24	24	0
387.5	10/23	put	8	8	0
390	10/23	call	2	2	0
390	10/23	put	118	111	-7
392.5	10/23	put	45	45	0
395	10/23	call	2	2	0
395	10/23	put	36	36	0
397.5	10/23	call	21	21	0
397.5	10/23	put	1	1	0
400	10/23	call	7	6	-1
400	10/23	put	42	42	0
402.5	10/23	call	1	1	0
402.5	10/23	put	17	17	0
405	10/23	call	2	2	0
405	10/23	put	49	48	-1
407.5	10/23	put	5	5	0
410	10/23	call	26	26	0
410	10/23	put	12	14	+2
412.5	10/23	call	48	47	-1
412.5	10/23	put	3	3	0
415	10/23	call	22	21	-1
415	10/23	put	25	24	-1
417.5	10/23	call	3	2	-1
417.5	10/23	put	28	28	0
420	10/23	call	45	45	0
420	10/23	put	20	21	+1
422.5	10/23	call	1	1	0
422.5	10/23	put	1	1	0
425	10/23	call	18	17	-1
425	10/23	put	9	11	+2
427.5	10/23	call	29	29	0
427.5	10/23	put	20	21	+1
430	10/23	call	81	76	-5
430	10/23	put	7	7	0
435	10/23	call	48	47	-1
437.5	10/23	call	22	22	0
437.5	10/23	put	4	4	0
440	10/23	call	13	14	+1
440	10/23	put	2	2	0
442.5	10/23	call	3	4	+1
445	10/23	call	108	107	-1
445	10/23	put	65	65	0
447.5	10/23	call	1	214	+213
447.5	10/23	put	0	213	+213
450	10/23	call	89	92	+3
452.5	10/23	call	4	221	+217
455	10/23	call	105	106	+1
460	10/23	call	17	19	+2
465	10/23	call	30	31	+1
470	10/23	call	66	66	0
480	10/23	call	8	8	0

Expiration 2026-10-30

SPGI open interest, settled 2026-10-21, expiration 2026-10-30, strikes 345 to 520

Strike	Expiry	Type	Prior OI	Settled OI	Change
345	10/30	put	6	6	0
350	10/30	put	14	14	0
355	10/30	put	36	36	0
360	10/30	put	23	23	0
365	10/30	put	127	125	-2
370	10/30	put	97	103	+6
375	10/30	call	1	1	0
375	10/30	put	91	91	0
380	10/30	call	6	5	-1
380	10/30	put	144	163	+19
382.5	10/30	put	5	5	0
385	10/30	call	4	4	0
385	10/30	put	157	154	-3
387.5	10/30	put	5	17	+12
390	10/30	call	9	7	-2
390	10/30	put	429	480	+51
395	10/30	call	9	9	0
395	10/30	put	705	705	0
397.5	10/30	put	6	5	-1
400	10/30	call	32	32	0
400	10/30	put	36	37	+1
405	10/30	call	25	25	0
405	10/30	put	44	44	0
407.5	10/30	put	0	1	+1
410	10/30	call	4	4	0
410	10/30	put	62	62	0
412.5	10/30	call	37	37	0
412.5	10/30	put	0	3	+3
415	10/30	call	16	15	-1
415	10/30	put	2	2	0
417.5	10/30	call	1	6	+5
417.5	10/30	put	2	2	0
420	10/30	call	13	14	+1
420	10/30	put	10	11	+1
422.5	10/30	call	1	1	0
425	10/30	call	59	59	0
425	10/30	put	0	6	+6
427.5	10/30	call	3	3	0
427.5	10/30	put	1	1	0
430	10/30	call	52	51	-1
430	10/30	put	3	4	+1
432.5	10/30	put	4	4	0
435	10/30	call	21	21	0
437.5	10/30	call	1	1	0
440	10/30	call	118	116	-2
440	10/30	put	0	2	+2
442.5	10/30	call	100	100	0
442.5	10/30	put	0	1	+1
445	10/30	call	11	11	0
445	10/30	put	1	1	0
450	10/30	call	17	17	0
455	10/30	call	12	37	+25
460	10/30	call	1	3	+2
465	10/30	call	13	12	-1
470	10/30	put	0	1	+1
475	10/30	call	1	1	0
480	10/30	call	6	6	0
520	10/30	call	2	2	0

Expiration 2026-11-06

SPGI open interest, settled 2026-10-21, expiration 2026-11-06, strikes 300 to 475

Strike	Expiry	Type	Prior OI	Settled OI	Change
300	11/06	put	5	5	0
310	11/06	put	1	1	0
335	11/06	put	1	1	0
345	11/06	put	7	11	+4
350	11/06	put	9	9	0
355	11/06	put	100	97	-3
360	11/06	put	26	26	0
365	11/06	put	41	41	0
370	11/06	put	10	10	0
375	11/06	call	1	1	0
375	11/06	put	34	34	0
380	11/06	put	15	13	-2
385	11/06	call	1	1	0
385	11/06	put	23	23	0
390	11/06	put	21	20	-1
395	11/06	call	1	1	0
395	11/06	put	2	2	0
400	11/06	call	14	14	0
400	11/06	put	24	24	0
405	11/06	call	3	3	0
410	11/06	call	36	36	0
410	11/06	put	4	4	0
415	11/06	call	40	40	0
415	11/06	put	3	3	0
420	11/06	call	4	4	0
420	11/06	put	4	4	0
422.5	11/06	put	1	1	0
425	11/06	call	9	9	0
425	11/06	put	6	6	0
430	11/06	call	6	5	-1
430	11/06	put	2	2	0
435	11/06	call	2	2	0
440	11/06	call	6	6	0
445	11/06	call	3	3	0
445	11/06	put	0	1	+1
450	11/06	call	59	59	0
450	11/06	put	4	4	0
460	11/06	call	5	6	+1
465	11/06	call	10	10	0
470	11/06	call	57	57	0
475	11/06	call	93	93	0

Expiration 2026-11-13

SPGI open interest, settled 2026-10-21, expiration 2026-11-13, strikes 335 to 465

Strike	Expiry	Type	Prior OI	Settled OI	Change
335	11/13	put	73	73	0
340	11/13	put	1	1	0
345	11/13	put	5	5	0
350	11/13	put	10	10	0
355	11/13	put	64	64	0
360	11/13	put	95	95	0
365	11/13	put	109	109	0
370	11/13	put	7	7	0
375	11/13	put	12	46	+34
380	11/13	put	15	15	0
385	11/13	put	6	6	0
390	11/13	call	1	1	0
390	11/13	put	7	7	0
395	11/13	call	1	1	0
395	11/13	put	4	4	0
400	11/13	put	3	3	0
405	11/13	call	1	1	0
415	11/13	call	3	3	0
420	11/13	call	2	1	-1
420	11/13	put	2	2	0
425	11/13	call	1	1	0
425	11/13	put	1	1	0
430	11/13	call	6	6	0
435	11/13	call	24	24	0
440	11/13	call	3	3	0
440	11/13	put	1	1	0
445	11/13	call	13	13	0
450	11/13	call	1	1	0
460	11/13	call	6	6	0
465	11/13	call	2	2	0

Expiration 2026-11-20

SPGI open interest, settled 2026-10-21, expiration 2026-11-20, strikes 300 to 580

Strike	Expiry	Type	Prior OI	Settled OI	Change
300	11/20	put	29	22	-7
310	11/20	put	33	33	0
320	11/20	put	38	38	0
330	11/20	call	1	1	0
330	11/20	put	103	103	0
340	11/20	put	178	174	-4
350	11/20	call	1	1	0
350	11/20	put	278	271	-7
360	11/20	put	144	144	0
370	11/20	call	3	3	0
370	11/20	put	252	244	-8
380	11/20	call	3	3	0
380	11/20	put	221	196	-25
390	11/20	call	15	15	0
390	11/20	put	667	665	-2
395	11/20	put	1	1	0
400	11/20	call	41	41	0
400	11/20	put	386	386	0
405	11/20	put	0	2	+2
410	11/20	call	142	142	0
410	11/20	put	197	198	+1
415	11/20	put	0	1	+1
420	11/20	call	116	117	+1
420	11/20	put	61	61	0
427.5	11/20	call	1	1	0
430	11/20	call	318	317	-1
430	11/20	put	198	198	0
432.5	11/20	call	1	1	0
435	11/20	call	4	4	0
440	11/20	call	283	284	+1
440	11/20	put	27	27	0
442.5	11/20	put	3	3	0
445	11/20	call	2	8	+6
445	11/20	put	2	3	+1
450	11/20	call	183	185	+2
450	11/20	put	75	75	0
452.5	11/20	call	0	1	+1
452.5	11/20	put	1	1	0
455	11/20	call	6	7	+1
455	11/20	put	54	54	0
460	11/20	call	88	89	+1
460	11/20	put	5	5	0
465	11/20	call	4	6	+2
470	11/20	call	79	88	+9
475	11/20	call	98	98	0
480	11/20	call	260	333	+73
490	11/20	call	29	29	0
500	11/20	call	344	344	0
510	11/20	call	182	182	0
520	11/20	call	7	7	0
530	11/20	call	2	2	0
540	11/20	call	1	1	0
550	11/20	call	74	74	0
560	11/20	call	54	54	0
580	11/20	call	10	10	0

Expiration 2026-11-27

SPGI open interest, settled 2026-10-21, expiration 2026-11-27, strikes 340 to 580

Strike	Expiry	Type	Prior OI	Settled OI	Change
340	11/27	put	101	101	0
360	11/27	put	1	1	0
365	11/27	put	2	2	0
370	11/27	put	2	2	0
380	11/27	put	2	2	0
385	11/27	put	11	11	0
390	11/27	put	16	16	0
395	11/27	put	12	12	0
400	11/27	call	0	1	+1
400	11/27	put	3	3	0
405	11/27	call	20	20	0
405	11/27	put	3	3	0
410	11/27	put	1	1	0
420	11/27	call	2	2	0
420	11/27	put	1	2	+1
425	11/27	call	1	1	0
425	11/27	put	2	2	0
430	11/27	call	1	1	0
435	11/27	call	1	1	0
440	11/27	call	1	1	0
450	11/27	call	2	2	0
455	11/27	call	1	2	+1
460	11/27	call	3	3	0
465	11/27	call	2	2	0
470	11/27	call	2	2	0
480	11/27	call	0	1	+1
485	11/27	call	2	2	0
490	11/27	call	31	31	0
580	11/27	call	5	5	0

Later expirations (2026-12-18, 2027-01-15, 2027-02-19, 2027-03-19, 2027-05-21, 2027-06-17, 2027-09-17, 2027-12-17, 2028-01-21, 2029-01-19) and all other strikes are in the Markdown table.

Markdown table | Open interest changes across symbols

TODAY

TOOLS

LEARN

SITE