ROK Options Open Interest by Strike, Oct 21 Settlement

ROK 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 9 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, 406 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 351 to 526. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

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

Strike	Expiry	Type	Prior OI	Settled OI	Change
340	11/19	call	2	91	+89
390	01/21	put	0	75	+75
430	12/18	call	46	81	+35
440	12/18	call	45	80	+35
410	11/20	put	41	71	+30
490	12/18	call	8	33	+25
460	11/20	call	142	165	+23
500	01/15	call	52	75	+23
470	11/20	call	109	123	+14
380	12/18	put	3	12	+9
420	12/18	put	1	8	+7
410	12/18	put	0	5	+5
450	12/18	call	1	6	+5
470	12/18	call	7	12	+5
420	01/15	put	23	28	+5

Expiration 2026-11-20

ROK open interest, settled 2026-10-21, expiration 2026-11-20, strikes 220 to 660

Strike	Expiry	Type	Prior OI	Settled OI	Change
220	11/20	put	13	13	0
230	11/20	put	21	21	0
240	11/20	call	1	1	0
240	11/20	put	20	20	0
250	11/20	put	8	8	0
260	11/20	call	2	2	0
260	11/20	put	24	24	0
270	11/20	call	200	200	0
270	11/20	put	25	25	0
280	11/20	call	4	4	0
280	11/20	put	20	20	0
290	11/20	call	1	1	0
290	11/20	put	15	15	0
300	11/20	call	7	7	0
300	11/20	put	42	42	0
310	11/20	call	202	202	0
310	11/20	put	14	14	0
320	11/20	call	11	11	0
320	11/20	put	30	30	0
330	11/20	call	25	25	0
330	11/20	put	60	60	0
340	11/20	call	30	30	0
340	11/20	put	41	41	0
350	11/20	call	105	105	0
350	11/20	put	42	42	0
360	11/20	call	22	22	0
360	11/20	put	585	585	0
370	11/20	call	19	19	0
370	11/20	put	105	105	0
380	11/20	call	26	26	0
380	11/20	put	53	55	+2
390	11/20	call	14	14	0
390	11/20	put	102	103	+1
400	11/20	call	35	35	0
400	11/20	put	155	156	+1
410	11/20	call	39	39	0
410	11/20	put	41	71	+30
420	11/20	call	36	37	+1
420	11/20	put	289	289	0
430	11/20	call	38	38	0
430	11/20	put	124	125	+1
440	11/20	call	117	118	+1
440	11/20	put	162	162	0
450	11/20	call	738	739	+1
450	11/20	put	21	22	+1
460	11/20	call	142	165	+23
460	11/20	put	8	11	+3
470	11/20	call	109	123	+14
470	11/20	put	106	106	0
480	11/20	call	96	100	+4
480	11/20	put	9	9	0
490	11/20	call	55	55	0
490	11/20	put	1	1	0
500	11/20	call	70	71	+1
500	11/20	put	7	7	0
510	11/20	call	498	498	0
510	11/20	put	1	1	0
520	11/20	call	59	59	0
530	11/20	call	60	60	0
540	11/20	call	17	17	0
550	11/20	call	25	25	0
560	11/20	call	153	153	0
580	11/20	call	89	89	0
600	11/20	call	173	171	-2
620	11/20	call	9	9	0
640	11/20	call	2	2	0
660	11/20	call	4	4	0

Expiration 2026-12-18

ROK open interest, settled 2026-10-21, expiration 2026-12-18, strikes 370 to 500

Strike	Expiry	Type	Prior OI	Settled OI	Change
370	12/18	put	1	2	+1
380	12/18	put	3	12	+9
400	12/18	call	11	11	0
410	12/18	put	0	5	+5
420	12/18	call	17	17	0
420	12/18	put	1	8	+7
430	12/18	call	46	81	+35
430	12/18	put	1	1	0
440	12/18	call	45	80	+35
450	12/18	call	1	6	+5
460	12/18	call	5	5	0
470	12/18	call	7	12	+5
480	12/18	call	3	3	0
490	12/18	call	8	33	+25
500	12/18	call	1	1	0

Expiration 2027-01-15

ROK open interest, settled 2026-10-21, expiration 2027-01-15, strikes 240 to 660

Strike	Expiry	Type	Prior OI	Settled OI	Change
240	01/15	call	1	1	0
240	01/15	put	61	61	0
250	01/15	call	5	5	0
250	01/15	put	38	38	0
260	01/15	call	5	5	0
260	01/15	put	5	5	0
270	01/15	call	4	4	0
270	01/15	put	3	3	0
280	01/15	call	6	6	0
280	01/15	put	1	1	0
290	01/15	call	2	2	0
290	01/15	put	5	5	0
300	01/15	call	1	1	0
300	01/15	put	8	8	0
310	01/15	put	3	3	0
320	01/15	call	1	1	0
330	01/15	call	3	3	0
330	01/15	put	3	3	0
340	01/15	put	6	6	0
350	01/15	call	1	1	0
350	01/15	put	19	19	0
360	01/15	call	3	3	0
360	01/15	put	1	1	0
370	01/15	call	11	11	0
370	01/15	put	53	53	0
380	01/15	call	3	3	0
380	01/15	put	19	19	0
390	01/15	call	8	8	0
390	01/15	put	19	19	0
400	01/15	call	7	7	0
400	01/15	put	29	29	0
410	01/15	call	4	4	0
410	01/15	put	30	30	0
420	01/15	call	22	22	0
420	01/15	put	23	28	+5
430	01/15	call	9	9	0
430	01/15	put	21	21	0
440	01/15	call	68	68	0
440	01/15	put	60	60	0
450	01/15	call	22	22	0
450	01/15	put	14	14	0
460	01/15	call	26	26	0
460	01/15	put	16	16	0
470	01/15	call	33	33	0
470	01/15	put	5	5	0
480	01/15	call	35	35	0
480	01/15	put	2	2	0
490	01/15	call	115	115	0
500	01/15	call	52	75	+23
510	01/15	call	37	37	0
520	01/15	call	17	17	0
530	01/15	call	146	146	0
540	01/15	call	86	85	-1
550	01/15	call	29	29	0
560	01/15	call	477	477	0
570	01/15	call	77	77	0
580	01/15	call	24	24	0
590	01/15	call	12	12	0
600	01/15	call	29	29	0
620	01/15	call	16	16	0
640	01/15	call	4	4	0
660	01/15	call	1	1	0

Expiration 2027-02-19

ROK open interest, settled 2026-10-21, expiration 2027-02-19, strikes 240 to 670

Strike	Expiry	Type	Prior OI	Settled OI
240	02/19	put	3	3
280	02/19	call	1	1
280	02/19	put	4	4
300	02/19	call	1	1
300	02/19	put	5	5
310	02/19	put	5	5
320	02/19	call	31	31
330	02/19	put	11	11
340	02/19	put	12	12
350	02/19	call	62	62
350	02/19	put	15	15
360	02/19	put	226	226
370	02/19	call	1	1
370	02/19	put	2	2
380	02/19	put	16	16
390	02/19	call	1	1
390	02/19	put	83	83
400	02/19	call	1	1
400	02/19	put	49	49
410	02/19	call	6	6
410	02/19	put	9	9
420	02/19	call	9	9
420	02/19	put	12	12
430	02/19	call	5	5
440	02/19	call	6	6
440	02/19	put	5	5
450	02/19	call	6	6
450	02/19	put	2	2
460	02/19	call	16	16
460	02/19	put	2	2
470	02/19	call	56	56
470	02/19	put	11	11
480	02/19	call	9	9
480	02/19	put	2	2
490	02/19	call	8	8
500	02/19	call	14	14
500	02/19	put	1	1
510	02/19	call	7	7
520	02/19	call	15	15
530	02/19	call	5	5
550	02/19	call	3	3
560	02/19	call	7	7
570	02/19	call	4	4
580	02/19	call	19	19
590	02/19	call	1	1
600	02/19	call	10	10
610	02/19	call	1	1
620	02/19	call	11	11
630	02/19	call	10	10
640	02/19	call	7	7
670	02/19	call	1	1

Expiration 2027-04-16

ROK open interest, settled 2026-10-21, expiration 2027-04-16, strikes 280 to 620

Strike	Expiry	Type	Prior OI	Settled OI	Change
280	04/16	call	1	1	0
310	04/16	put	1	1	0
370	04/16	put	1	1	0
380	04/16	call	5	5	0
380	04/16	put	1	1	0
410	04/16	call	2	2	0
420	04/16	put	8	8	0
430	04/16	call	4	4	0
430	04/16	put	2	2	0
440	04/16	call	26	26	0
440	04/16	put	9	9	0
450	04/16	call	44	44	0
460	04/16	call	10	10	0
460	04/16	put	6	6	0
470	04/16	call	6	6	0
480	04/16	call	0	3	+3
500	04/16	call	19	19	0
510	04/16	call	6	6	0
520	04/16	call	1	1	0
550	04/16	call	1	1	0
570	04/16	call	1	1	0
580	04/16	call	1	1	0
600	04/16	call	1	2	+1
620	04/16	call	1	1	0

Expiration 2027-05-21

ROK open interest, settled 2026-10-21, expiration 2027-05-21, strikes 230 to 720

Strike	Expiry	Type	Prior OI	Settled OI
230	05/21	call	1	1
250	05/21	call	1	1
270	05/21	call	1	1
300	05/21	call	1	1
310	05/21	put	29	29
320	05/21	put	44	44
330	05/21	put	1	1
340	05/21	call	1	1
340	05/21	put	124	124
350	05/21	call	1	1
350	05/21	put	42	42
360	05/21	put	1	1
370	05/21	call	1	1
380	05/21	call	11	11
380	05/21	put	9	9
390	05/21	put	12	12
400	05/21	call	21	21
420	05/21	call	4	4
420	05/21	put	4	4
430	05/21	call	1	1
430	05/21	put	2	2
440	05/21	call	4	4
450	05/21	call	6	6
450	05/21	put	3	3
460	05/21	call	14	14
460	05/21	put	14	14
470	05/21	call	5	5
470	05/21	put	3	3
480	05/21	call	4	4
480	05/21	put	10	10
490	05/21	call	52	52
500	05/21	call	8	8
500	05/21	put	1	1
510	05/21	call	15	15
520	05/21	call	5	5
530	05/21	call	4	4
540	05/21	call	3	3
550	05/21	call	4	4
560	05/21	call	13	13
570	05/21	call	19	19
590	05/21	call	2	2
590	05/21	put	1	1
650	05/21	call	1	1
680	05/21	call	1	1
700	05/21	call	509	509
720	05/21	call	2	2

Later expirations (2027-08-20, 2027-11-19, 2028-01-21) and all other strikes are in the Markdown table.

Markdown table | Open interest changes across symbols

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