PSX Options Open Interest by Strike, Oct 21 Settlement

PSX 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 17 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, 1,031 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 232 to 348. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

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

Strike	Expiry	Type	Prior OI	Settled OI	Change
287.5	10/23	call	10	387	+377
285	10/23	call	103	453	+350
270	10/23	put	178	502	+324
370	01/15	call	61	151	+90
360	12/18	call	14	100	+86
350	12/18	put	0	60	+60
340	12/18	put	6	60	+54
295	10/30	call	106	153	+47
292.5	10/23	call	123	167	+44
310	10/23	call	92	114	+22
290	11/20	call	505	527	+22
220	03/19	call	31	52	+21
240	06/17	put	463	484	+21
302.5	10/23	call	21	41	+20
305	11/06	call	31	11	-20

Expiration 2026-10-23

PSX open interest, settled 2026-10-21, expiration 2026-10-23, strikes 230 to 350

Strike	Expiry	Type	Prior OI	Settled OI	Change
230	10/23	put	96	96	0
235	10/23	call	11	11	0
235	10/23	put	21	22	+1
240	10/23	call	4	3	-1
240	10/23	put	237	235	-2
242.5	10/23	call	17	17	0
242.5	10/23	put	1	1	0
245	10/23	call	11	11	0
245	10/23	put	7	7	0
247.5	10/23	put	3	3	0
250	10/23	call	15	15	0
250	10/23	put	128	130	+2
252.5	10/23	put	31	31	0
255	10/23	call	5	5	0
255	10/23	put	41	37	-4
257.5	10/23	put	9	12	+3
260	10/23	call	26	26	0
260	10/23	put	84	84	0
262.5	10/23	put	11	11	0
265	10/23	call	54	54	0
265	10/23	put	57	63	+6
267.5	10/23	call	1	1	0
267.5	10/23	put	27	31	+4
270	10/23	call	54	54	0
270	10/23	put	178	502	+324
272.5	10/23	call	2	4	+2
272.5	10/23	put	59	63	+4
275	10/23	call	23	22	-1
275	10/23	put	62	71	+9
277.5	10/23	call	3	3	0
277.5	10/23	put	20	24	+4
280	10/23	call	36	35	-1
280	10/23	put	114	115	+1
282.5	10/23	call	10	8	-2
282.5	10/23	put	28	39	+11
285	10/23	call	103	453	+350
285	10/23	put	87	99	+12
287.5	10/23	call	10	387	+377
287.5	10/23	put	77	83	+6
290	10/23	call	102	108	+6
290	10/23	put	92	97	+5
292.5	10/23	call	123	167	+44
292.5	10/23	put	45	47	+2
295	10/23	call	140	142	+2
295	10/23	put	61	50	-11
297.5	10/23	call	170	182	+12
297.5	10/23	put	1	1	0
300	10/23	call	158	158	0
300	10/23	put	3	9	+6
302.5	10/23	call	21	41	+20
305	10/23	call	81	84	+3
305	10/23	put	1	1	0
307.5	10/23	call	51	61	+10
310	10/23	call	92	114	+22
310	10/23	put	1	1	0
312.5	10/23	call	3	3	0
315	10/23	call	25	25	0
317.5	10/23	call	17	17	0
320	10/23	call	19	24	+5
320	10/23	put	1	1	0
322.5	10/23	call	11	11	0
325	10/23	call	13	13	0
330	10/23	call	5	5	0
340	10/23	call	1	1	0
350	10/23	call	1	1	0

Expiration 2026-10-30

PSX open interest, settled 2026-10-21, expiration 2026-10-30, strikes 200 to 350

Strike	Expiry	Type	Prior OI	Settled OI	Change
200	10/30	call	1	1	0
200	10/30	put	2	2	0
205	10/30	put	2	2	0
210	10/30	call	1	1	0
215	10/30	put	9	9	0
220	10/30	call	3	3	0
220	10/30	put	7	7	0
225	10/30	put	155	155	0
230	10/30	call	11	11	0
230	10/30	put	16	16	0
235	10/30	call	3	3	0
235	10/30	put	16	16	0
240	10/30	call	33	33	0
240	10/30	put	118	118	0
245	10/30	call	2	2	0
245	10/30	put	17	16	-1
250	10/30	call	6	6	0
250	10/30	put	51	52	+1
255	10/30	call	53	53	0
255	10/30	put	39	39	0
260	10/30	call	20	20	0
260	10/30	put	16	16	0
262.5	10/30	put	1	1	0
265	10/30	call	27	27	0
265	10/30	put	52	52	0
270	10/30	call	17	17	0
270	10/30	put	41	41	0
272.5	10/30	call	2	2	0
272.5	10/30	put	3	4	+1
275	10/30	call	28	28	0
275	10/30	put	19	20	+1
277.5	10/30	call	1	1	0
277.5	10/30	put	1	1	0
280	10/30	call	33	34	+1
280	10/30	put	14	14	0
282.5	10/30	call	5	7	+2
282.5	10/30	put	3	3	0
285	10/30	call	18	21	+3
285	10/30	put	2	2	0
287.5	10/30	call	0	1	+1
287.5	10/30	put	2	2	0
290	10/30	call	54	53	-1
290	10/30	put	6	8	+2
292.5	10/30	call	18	18	0
292.5	10/30	put	15	16	+1
295	10/30	call	106	153	+47
295	10/30	put	2	4	+2
297.5	10/30	call	62	62	0
300	10/30	call	109	106	-3
300	10/30	put	1	1	0
302.5	10/30	call	3	3	0
305	10/30	call	567	568	+1
310	10/30	call	22	25	+3
312.5	10/30	call	11	11	0
315	10/30	call	7	7	0
317.5	10/30	call	1	1	0
320	10/30	call	68	68	0
325	10/30	call	3	16	+13
330	10/30	call	4	4	0
335	10/30	call	7	7	0
340	10/30	call	1	1	0
350	10/30	call	1	1	0

Expiration 2026-11-06

PSX open interest, settled 2026-10-21, expiration 2026-11-06, strikes 210 to 350

Strike	Expiry	Type	Prior OI	Settled OI	Change
210	11/06	put	6	6	0
215	11/06	put	8	8	0
220	11/06	put	4	4	0
225	11/06	call	3	3	0
225	11/06	put	4	4	0
230	11/06	put	1	1	0
235	11/06	put	6	6	0
240	11/06	put	5	5	0
245	11/06	put	8	8	0
250	11/06	put	43	43	0
255	11/06	put	9	9	0
260	11/06	call	5	5	0
260	11/06	put	114	114	0
265	11/06	call	11	11	0
265	11/06	put	3	3	0
267.5	11/06	call	1	1	0
270	11/06	call	24	24	0
270	11/06	put	31	31	0
275	11/06	call	13	13	0
275	11/06	put	12	12	0
280	11/06	call	95	95	0
280	11/06	put	25	25	0
285	11/06	call	79	79	0
285	11/06	put	14	14	0
290	11/06	call	57	57	0
290	11/06	put	6	16	+10
292.5	11/06	call	1	1	0
295	11/06	call	72	72	0
295	11/06	put	1	1	0
297.5	11/06	call	1	1	0
300	11/06	call	38	38	0
305	11/06	call	31	11	-20
307.5	11/06	call	1	1	0
310	11/06	call	5	5	0
312.5	11/06	call	2	2	0
315	11/06	call	6	6	0
320	11/06	call	5	6	+1
325	11/06	call	9	9	0
330	11/06	call	66	66	0
335	11/06	call	1	1	0
350	11/06	call	2	2	0

Expiration 2026-11-13

PSX open interest, settled 2026-10-21, expiration 2026-11-13, strikes 150 to 365

Strike	Expiry	Type	Prior OI	Settled OI	Change
150	11/13	call	1	1	0
200	11/13	put	2	2	0
220	11/13	call	7	7	0
220	11/13	put	7	7	0
230	11/13	call	7	7	0
235	11/13	put	18	18	0
240	11/13	call	1	1	0
240	11/13	put	7	7	0
245	11/13	call	1	1	0
245	11/13	put	13	13	0
250	11/13	call	7	7	0
250	11/13	put	20	20	0
255	11/13	call	3	3	0
255	11/13	put	12	12	0
260	11/13	call	9	9	0
260	11/13	put	5	5	0
265	11/13	call	3	3	0
265	11/13	put	2	2	0
270	11/13	call	1	1	0
270	11/13	put	3	3	0
275	11/13	call	2	2	0
275	11/13	put	4	4	0
280	11/13	call	10	10	0
280	11/13	put	4	4	0
285	11/13	call	5	5	0
290	11/13	call	71	71	0
290	11/13	put	1	1	0
295	11/13	call	2	3	+1
300	11/13	call	7	11	+4
305	11/13	call	7	7	0
310	11/13	call	13	13	0
315	11/13	call	30	30	0
320	11/13	call	5	5	0
325	11/13	call	4	4	0
330	11/13	call	93	93	0
335	11/13	call	2	2	0
340	11/13	call	2	2	0
365	11/13	put	1	1	0

Expiration 2026-11-20

PSX open interest, settled 2026-10-21, expiration 2026-11-20, strikes 155 to 380

Strike	Expiry	Type	Prior OI	Settled OI	Change
155	11/20	call	8	8	0
155	11/20	put	15	15	0
160	11/20	call	30	30	0
160	11/20	put	80	80	0
165	11/20	call	4	3	-1
165	11/20	put	64	64	0
170	11/20	call	43	43	0
170	11/20	put	76	76	0
175	11/20	call	40	40	0
175	11/20	put	37	37	0
180	11/20	call	194	194	0
180	11/20	put	79	79	0
185	11/20	call	135	135	0
185	11/20	put	37	37	0
190	11/20	call	99	81	-18
190	11/20	put	39	39	0
195	11/20	call	57	57	0
195	11/20	put	35	35	0
200	11/20	call	260	260	0
200	11/20	put	176	176	0
210	11/20	call	452	452	0
210	11/20	put	2,428	2,426	-2
220	11/20	call	938	938	0
220	11/20	put	1,074	1,073	-1
230	11/20	call	639	639	0
230	11/20	put	189	189	0
240	11/20	call	184	181	-3
240	11/20	put	231	232	+1
245	11/20	put	0	1	+1
250	11/20	call	267	264	-3
250	11/20	put	339	344	+5
255	11/20	put	2	5	+3
260	11/20	call	666	665	-1
260	11/20	put	337	336	-1
265	11/20	put	2	2	0
270	11/20	call	410	410	0
270	11/20	put	397	398	+1
272.5	11/20	put	1	1	0
275	11/20	call	0	1	+1
280	11/20	call	559	558	-1
280	11/20	put	154	157	+3
285	11/20	put	0	2	+2
287.5	11/20	call	0	3	+3
287.5	11/20	put	0	12	+12
290	11/20	call	505	527	+22
290	11/20	put	111	123	+12
292.5	11/20	call	0	14	+14
292.5	11/20	put	1	7	+6
295	11/20	call	3	4	+1
295	11/20	put	5	7	+2
297.5	11/20	call	3	4	+1
300	11/20	call	422	425	+3
300	11/20	put	93	93	0
302.5	11/20	call	9	9	0
310	11/20	call	196	198	+2
310	11/20	put	21	21	0
320	11/20	call	159	160	+1
325	11/20	call	0	4	+4
330	11/20	call	123	123	0
340	11/20	call	456	456	0
350	11/20	call	98	96	-2
350	11/20	put	6	6	0
360	11/20	call	70	70	0
370	11/20	call	6	6	0
380	11/20	call	8	8	0

Expiration 2026-11-27

PSX open interest, settled 2026-10-21, expiration 2026-11-27, strikes 230 to 380

Strike	Expiry	Type	Prior OI	Settled OI	Change
230	11/27	call	1	1	0
235	11/27	put	1	1	0
240	11/27	put	1	1	0
245	11/27	put	2	2	0
250	11/27	put	11	12	+1
255	11/27	call	20	20	0
255	11/27	put	2	2	0
260	11/27	call	20	20	0
260	11/27	put	7	7	0
265	11/27	call	1	1	0
265	11/27	put	4	5	+1
270	11/27	put	1	3	+2
275	11/27	put	4	4	0
280	11/27	call	6	8	+2
280	11/27	put	3	3	0
285	11/27	call	7	8	+1
285	11/27	put	5	5	0
290	11/27	call	1	3	+2
290	11/27	put	4	4	0
295	11/27	call	4	3	-1
300	11/27	call	2	2	0
310	11/27	call	2	2	0
315	11/27	call	1	1	0
320	11/27	call	10	10	0
325	11/27	call	2	2	0
335	11/27	call	1	1	0
340	11/27	call	1	1	0
345	11/27	call	0	1	+1
350	11/27	call	3	3	0
360	11/27	call	1	1	0
370	11/27	call	3	3	0
380	11/27	call	1	1	0

Later expirations (2026-12-18, 2027-01-15, 2027-02-19, 2027-03-19, 2027-05-21, 2027-06-17, 2027-08-20, 2027-09-17, 2027-11-19, 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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