IWM Options Open Interest by Strike, Oct 21 Settlement

IWM 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, 3,520 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 221 to 332. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

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

Strike	Expiry	Type	Prior OI	Settled OI	Change
263	11/20	put	44,064	84,475	+40,411
270	11/20	put	141,536	168,381	+26,845
272	10/30	put	40,469	21,784	-18,685
283	10/23	call	4,709	21,529	+16,820
269	10/30	put	28,028	16,220	-11,808
277	10/23	put	12,250	23,141	+10,891
270	11/06	put	5,656	16,546	+10,890
262	11/20	put	67,361	56,826	-10,535
260	11/06	put	11,697	20,893	+9,196
273	10/23	put	9,868	18,942	+9,074
258	10/30	put	29,744	20,726	-9,018
281	10/23	call	12,745	21,305	+8,560
282	10/22	call	13,173	4,652	-8,521
251	12/18	put	801	8,802	+8,001
285	10/30	call	5,848	12,781	+6,933

Expiration 2026-10-22

IWM open interest, settled 2026-10-21, expiration 2026-10-22, strikes 245 to 307

Strike	Expiry	Type	Prior OI	Settled OI	Change
245	10/22	put	296	296	0
250	10/22	put	154	154	0
255	10/22	call	3	3	0
255	10/22	put	143	232	+89
260	10/22	call	24	33	+9
260	10/22	put	1,106	1,385	+279
261	10/22	call	7	7	0
261	10/22	put	247	673	+426
262	10/22	call	2	2	0
262	10/22	put	718	716	-2
263	10/22	call	16	17	+1
263	10/22	put	404	356	-48
264	10/22	call	24	22	-2
264	10/22	put	992	984	-8
265	10/22	call	55	57	+2
265	10/22	put	1,723	1,713	-10
266	10/22	call	89	88	-1
266	10/22	put	1,782	3,281	+1,499
267	10/22	call	116	114	-2
267	10/22	put	4,817	4,817	0
268	10/22	call	76	75	-1
268	10/22	put	1,596	1,981	+385
269	10/22	call	39	39	0
269	10/22	put	1,435	2,750	+1,315
270	10/22	call	110	123	+13
270	10/22	put	1,626	2,107	+481
271	10/22	call	377	366	-11
271	10/22	put	1,658	7,015	+5,357
272	10/22	call	931	861	-70
272	10/22	put	1,668	3,527	+1,859
273	10/22	call	657	797	+140
273	10/22	put	1,690	2,035	+345
274	10/22	call	1,222	1,639	+417
274	10/22	put	1,413	4,343	+2,930
275	10/22	call	2,695	2,933	+238
275	10/22	put	1,245	2,633	+1,388
276	10/22	call	806	1,732	+926
276	10/22	put	809	1,635	+826
277	10/22	call	1,564	3,308	+1,744
277	10/22	put	595	1,673	+1,078
278	10/22	call	1,241	2,260	+1,019
278	10/22	put	184	412	+228
279	10/22	call	1,279	2,652	+1,373
279	10/22	put	164	219	+55
280	10/22	call	10,019	7,323	-2,696
280	10/22	put	79	228	+149
281	10/22	call	725	1,697	+972
281	10/22	put	14	31	+17
282	10/22	call	13,173	4,652	-8,521
282	10/22	put	14	1	-13
283	10/22	call	10,314	10,544	+230
283	10/22	put	24	23	-1
284	10/22	call	315	354	+39
285	10/22	call	870	1,089	+219
285	10/22	put	0	2	+2
286	10/22	call	112	179	+67
287	10/22	call	163	161	-2
288	10/22	call	68	75	+7
289	10/22	call	8	8	0
290	10/22	call	788	788	0
291	10/22	call	346	350	+4
292	10/22	call	2	2	0
295	10/22	call	2	5	+3
296	10/22	call	16	16	0
300	10/22	call	23	23	0
307	10/22	call	1	1	0

Expiration 2026-10-23

IWM open interest, settled 2026-10-21, expiration 2026-10-23, strikes 258 to 294

Strike	Expiry	Type	Prior OI	Settled OI	Change
258	10/23	call	7	7	0
258	10/23	put	2,730	2,730	0
259	10/23	call	1	1	0
259	10/23	put	1,874	1,802	-72
260	10/23	call	110	107	-3
260	10/23	put	5,987	6,978	+991
261	10/23	call	23	23	0
261	10/23	put	2,194	3,806	+1,612
262	10/23	call	14	14	0
262	10/23	put	11,250	11,265	+15
263	10/23	call	266	229	-37
263	10/23	put	2,285	2,280	-5
264	10/23	call	349	121	-228
264	10/23	put	2,065	1,945	-120
265	10/23	call	134	130	-4
265	10/23	put	10,836	11,157	+321
266	10/23	call	108	109	+1
266	10/23	put	5,669	6,608	+939
267	10/23	call	115	115	0
267	10/23	put	17,914	17,960	+46
268	10/23	call	296	291	-5
268	10/23	put	7,459	7,464	+5
269	10/23	call	97	123	+26
269	10/23	put	5,917	8,552	+2,635
270	10/23	call	1,119	1,111	-8
270	10/23	put	8,911	10,354	+1,443
271	10/23	call	1,099	1,109	+10
271	10/23	put	7,018	7,286	+268
272	10/23	call	1,400	1,268	-132
272	10/23	put	7,178	5,459	-1,719
273	10/23	call	3,878	3,892	+14
273	10/23	put	9,868	18,942	+9,074
274	10/23	call	4,660	4,674	+14
274	10/23	put	2,369	4,003	+1,634
275	10/23	call	5,772	5,287	-485
275	10/23	put	8,030	9,549	+1,519
276	10/23	call	6,371	6,436	+65
276	10/23	put	9,025	8,872	-153
277	10/23	call	4,447	4,698	+251
277	10/23	put	12,250	23,141	+10,891
278	10/23	call	9,592	7,727	-1,865
278	10/23	put	4,464	4,662	+198
279	10/23	call	4,447	5,169	+722
279	10/23	put	1,967	2,164	+197
280	10/23	call	14,199	15,135	+936
280	10/23	put	2,311	2,032	-279
281	10/23	call	12,745	21,305	+8,560
281	10/23	put	936	1,033	+97
282	10/23	call	5,621	6,331	+710
282	10/23	put	240	340	+100
282.5	10/23	call	620	809	+189
282.5	10/23	put	10	10	0
283	10/23	call	4,709	21,529	+16,820
283	10/23	put	3	5	+2
284	10/23	call	1,897	3,424	+1,527
284	10/23	put	28	19	-9
285	10/23	call	7,301	7,506	+205
285	10/23	put	92	103	+11
286	10/23	call	7,684	7,717	+33
286	10/23	put	2	2	0
287	10/23	call	2,641	2,712	+71
287.5	10/23	call	800	815	+15
287.5	10/23	put	1	1	0
288	10/23	call	1,866	1,949	+83
289	10/23	call	1,311	1,307	-4
290	10/23	call	3,351	3,351	0
290	10/23	put	5	5	0
291	10/23	call	808	808	0
292	10/23	call	3,537	3,521	-16
292.5	10/23	call	482	482	0
293	10/23	call	1,656	1,610	-46
294	10/23	call	1,570	1,570	0

Expiration 2026-10-26

IWM open interest, settled 2026-10-21, expiration 2026-10-26, strikes 255 to 300

Strike	Expiry	Type	Prior OI	Settled OI	Change
255	10/26	put	1,327	1,325	-2
257.5	10/26	put	1,468	1,469	+1
260	10/26	put	674	794	+120
261	10/26	call	13	13	0
261	10/26	put	252	251	-1
262	10/26	call	34	34	0
262	10/26	put	1,378	1,385	+7
263	10/26	call	31	31	0
263	10/26	put	794	790	-4
264	10/26	call	11	11	0
264	10/26	put	573	2,873	+2,300
265	10/26	call	223	221	-2
265	10/26	put	1,468	1,633	+165
266	10/26	call	37	32	-5
266	10/26	put	787	1,201	+414
267	10/26	call	37	38	+1
267	10/26	put	2,327	2,812	+485
268	10/26	call	29	29	0
268	10/26	put	819	836	+17
269	10/26	call	180	180	0
269	10/26	put	676	5,231	+4,555
270	10/26	call	283	285	+2
270	10/26	put	1,075	1,417	+342
271	10/26	call	360	354	-6
271	10/26	put	1,346	1,649	+303
272	10/26	call	598	576	-22
272	10/26	put	456	444	-12
273	10/26	call	1,149	1,157	+8
273	10/26	put	503	684	+181
274	10/26	call	734	798	+64
274	10/26	put	1,018	1,468	+450
275	10/26	call	1,361	1,274	-87
275	10/26	put	292	573	+281
276	10/26	call	1,001	1,030	+29
276	10/26	put	247	477	+230
277	10/26	call	967	1,110	+143
277	10/26	put	328	475	+147
278	10/26	call	1,995	2,180	+185
278	10/26	put	928	987	+59
279	10/26	call	627	714	+87
279	10/26	put	485	486	+1
280	10/26	call	4,000	4,266	+266
280	10/26	put	50	86	+36
281	10/26	call	1,612	1,726	+114
281	10/26	put	121	136	+15
282	10/26	call	932	1,087	+155
282	10/26	put	50	50	0
283	10/26	call	5,109	5,178	+69
284	10/26	call	327	432	+105
284	10/26	put	0	1	+1
285	10/26	call	1,980	2,950	+970
285	10/26	put	1	30	+29
286	10/26	call	177	671	+494
287	10/26	call	112	164	+52
288	10/26	call	24	30	+6
289	10/26	call	25	25	0
290	10/26	call	74	74	0
291	10/26	call	5	17	+12
292	10/26	call	17	26	+9
293	10/26	call	0	1	+1
294	10/26	call	13	8	-5
295	10/26	call	2	2	0
296	10/26	call	7	7	0
300	10/26	call	103	103	0

Expiration 2026-10-27

IWM open interest, settled 2026-10-21, expiration 2026-10-27, strikes 257.5 to 297

Strike	Expiry	Type	Prior OI	Settled OI	Change
257.5	10/27	put	1,074	1,067	-7
260	10/27	call	1	1	0
260	10/27	put	410	405	-5
261	10/27	call	6	5	-1
261	10/27	put	145	142	-3
262	10/27	call	1	1	0
262	10/27	put	1,685	1,691	+6
262.5	10/27	put	883	886	+3
263	10/27	call	3	4	+1
263	10/27	put	674	711	+37
264	10/27	call	1	1	0
264	10/27	put	173	256	+83
265	10/27	call	3	5	+2
265	10/27	put	108	1,292	+1,184
266	10/27	call	6	6	0
266	10/27	put	834	1,370	+536
267	10/27	call	73	73	0
267	10/27	put	1,019	1,046	+27
268	10/27	call	50	50	0
268	10/27	put	395	329	-66
269	10/27	call	147	152	+5
269	10/27	put	693	724	+31
270	10/27	call	170	187	+17
270	10/27	put	869	1,173	+304
271	10/27	call	216	217	+1
271	10/27	put	333	328	-5
272	10/27	call	563	566	+3
272	10/27	put	612	630	+18
273	10/27	call	715	710	-5
273	10/27	put	106	119	+13
274	10/27	call	977	985	+8
274	10/27	put	504	584	+80
275	10/27	call	646	728	+82
275	10/27	put	209	710	+501
276	10/27	call	674	1,093	+419
276	10/27	put	121	365	+244
277	10/27	call	300	404	+104
277	10/27	put	60	209	+149
278	10/27	call	700	695	-5
278	10/27	put	14	24	+10
279	10/27	call	1,154	1,229	+75
279	10/27	put	10	31	+21
280	10/27	call	689	840	+151
280	10/27	put	27	39	+12
281	10/27	call	422	565	+143
281	10/27	put	0	10	+10
282	10/27	call	1,888	2,070	+182
282	10/27	put	3	3	0
283	10/27	call	336	918	+582
283	10/27	put	0	1	+1
284	10/27	call	4,290	4,316	+26
284	10/27	put	22	22	0
285	10/27	call	1,797	1,853	+56
286	10/27	call	25	253	+228
286	10/27	put	10	10	0
287	10/27	call	15	33	+18
288	10/27	call	430	433	+3
289	10/27	call	2	8	+6
290	10/27	call	78	65	-13
291	10/27	call	6	6	0
292	10/27	call	3	10	+7
293	10/27	call	0	1	+1
294	10/27	call	0	3	+3
295	10/27	call	3	3	0
296	10/27	call	1	1	0
297	10/27	call	100	100	0

Expiration 2026-10-28

IWM open interest, settled 2026-10-21, expiration 2026-10-28, strikes 257.5 to 297

Strike	Expiry	Type	Prior OI	Settled OI	Change
257.5	10/28	put	121	212	+91
260	10/28	call	2	2	0
260	10/28	put	1,109	1,119	+10
261	10/28	call	2	2	0
261	10/28	put	131	131	0
262	10/28	call	1	1	0
262	10/28	put	145	512	+367
262.5	10/28	call	14	14	0
262.5	10/28	put	128	123	-5
263	10/28	call	4	4	0
263	10/28	put	206	207	+1
264	10/28	put	325	333	+8
265	10/28	call	2	2	0
265	10/28	put	456	1,018	+562
266	10/28	call	32	32	0
266	10/28	put	187	553	+366
267	10/28	call	0	23	+23
267	10/28	put	248	562	+314
267.5	10/28	call	2	3	+1
267.5	10/28	put	197	197	0
268	10/28	call	36	38	+2
268	10/28	put	370	217	-153
269	10/28	call	221	221	0
269	10/28	put	558	348	-210
270	10/28	call	23	28	+5
270	10/28	put	174	243	+69
271	10/28	call	57	63	+6
271	10/28	put	226	267	+41
272	10/28	call	199	235	+36
272	10/28	put	181	1,974	+1,793
273	10/28	call	173	294	+121
273	10/28	put	150	1,803	+1,653
274	10/28	call	235	259	+24
274	10/28	put	112	792	+680
275	10/28	call	2,582	2,573	-9
275	10/28	put	229	1,186	+957
276	10/28	call	658	724	+66
276	10/28	put	181	610	+429
277	10/28	call	207	349	+142
277	10/28	put	79	336	+257
278	10/28	call	174	206	+32
278	10/28	put	25	170	+145
279	10/28	call	255	269	+14
279	10/28	put	43	43	0
280	10/28	call	436	494	+58
280	10/28	put	28	30	+2
281	10/28	call	85	444	+359
281	10/28	put	76	81	+5
282	10/28	call	103	595	+492
282	10/28	put	26	28	+2
283	10/28	call	357	408	+51
283	10/28	put	1	1	0
284	10/28	call	111	216	+105
284	10/28	put	1	1	0
285	10/28	call	1,127	1,283	+156
285	10/28	put	2	24	+22
286	10/28	call	30	108	+78
287	10/28	call	77	92	+15
288	10/28	call	27	29	+2
289	10/28	call	1	6	+5
289	10/28	put	0	1	+1
290	10/28	call	19	78	+59
290	10/28	put	0	1	+1
291	10/28	call	52	57	+5
292	10/28	call	1	5	+4
292.5	10/28	call	0	1	+1
295	10/28	call	6	6	0
296	10/28	call	1	1	0
297	10/28	call	0	1	+1

Expiration 2026-10-29

IWM open interest, settled 2026-10-21, expiration 2026-10-29, strikes 255 to 298

Strike	Expiry	Type	Prior OI	Settled OI	Change
255	10/29	put	72	72	0
257.5	10/29	put	69	69	0
260	10/29	put	387	388	+1
261	10/29	put	160	160	0
262	10/29	put	130	159	+29
263	10/29	put	694	694	0
264	10/29	call	3	3	0
264	10/29	put	506	506	0
265	10/29	call	3	3	0
265	10/29	put	361	391	+30
266	10/29	call	0	2	+2
266	10/29	put	247	502	+255
267	10/29	call	25	25	0
267	10/29	put	1,101	1,102	+1
268	10/29	call	55	53	-2
268	10/29	put	423	425	+2
269	10/29	call	31	32	+1
269	10/29	put	186	217	+31
270	10/29	call	51	53	+2
270	10/29	put	125	133	+8
271	10/29	call	77	68	-9
271	10/29	put	53	52	-1
272	10/29	call	145	145	0
272	10/29	put	183	427	+244
273	10/29	call	190	210	+20
273	10/29	put	154	148	-6
274	10/29	call	185	167	-18
274	10/29	put	91	80	-11
275	10/29	call	270	251	-19
275	10/29	put	72	70	-2
276	10/29	call	189	230	+41
276	10/29	put	57	149	+92
277	10/29	call	156	229	+73
277	10/29	put	89	162	+73
278	10/29	call	105	120	+15
278	10/29	put	16	329	+313
279	10/29	call	1,008	1,012	+4
279	10/29	put	31	72	+41
280	10/29	call	15,156	15,170	+14
280	10/29	put	36	40	+4
281	10/29	call	774	827	+53
281	10/29	put	2	3	+1
282	10/29	call	9,877	9,909	+32
282	10/29	put	1	1	0
283	10/29	call	188	188	0
283	10/29	put	0	1	+1
284	10/29	call	9,790	9,801	+11
285	10/29	call	89	102	+13
286	10/29	call	3,087	3,091	+4
286	10/29	put	3	3	0
287	10/29	call	11	12	+1
288	10/29	call	1	9	+8
288	10/29	put	1	1	0
289	10/29	call	66	68	+2
290	10/29	call	170	170	0
291	10/29	call	3	3	0
292	10/29	call	0	1	+1
293	10/29	call	5	3	-2
294	10/29	call	20	14	-6
295	10/29	call	2	2	0
296	10/29	call	1	1	0
298	10/29	call	0	2	+2

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, 2026-12-18, 2026-12-31, 2027-01-15, 2027-02-19, 2027-03-19, 2027-03-31, 2027-04-16, 2027-05-21, 2027-06-17, 2027-06-30, 2027-09-17, 2027-09-30, 2027-10-15, 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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