GD Options Open Interest by Strike, Oct 21 Settlement

GD 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 15 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, 610 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 276 to 414. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

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

Strike	Expiry	Type	Prior OI	Settled OI	Change
380	11/20	call	148	248	+100
250	10/23	put	0	92	+92
300	10/23	put	0	85	+85
347.5	10/23	call	12	95	+83
245	10/23	put	0	78	+78
345	10/23	call	29	84	+55
230	12/18	put	107	157	+50
260	11/20	put	125	174	+49
342.5	10/23	put	12	30	+18
350	11/20	call	310	325	+15
352.5	10/23	call	11	25	+14
390	01/15	call	253	240	-13
367.5	11/20	call	0	12	+12
355	10/23	call	34	45	+11
332.5	10/23	put	13	23	+10

Expiration 2026-10-23

GD open interest, settled 2026-10-21, expiration 2026-10-23, strikes 245 to 435

Strike	Expiry	Type	Prior OI	Settled OI	Change
245	10/23	put	0	78	+78
250	10/23	put	0	92	+92
290	10/23	put	2	2	0
300	10/23	put	0	85	+85
310	10/23	call	5	5	0
310	10/23	put	7	7	0
315	10/23	put	1	1	0
317.5	10/23	call	3	3	0
317.5	10/23	put	1	1	0
320	10/23	call	14	14	0
320	10/23	put	14	14	0
322.5	10/23	put	1	1	0
325	10/23	call	1	1	0
325	10/23	put	28	28	0
327.5	10/23	call	1	1	0
327.5	10/23	put	6	6	0
330	10/23	call	10	10	0
330	10/23	put	40	40	0
332.5	10/23	call	3	3	0
332.5	10/23	put	13	23	+10
335	10/23	call	31	31	0
335	10/23	put	34	34	0
337.5	10/23	call	2	2	0
337.5	10/23	put	72	72	0
340	10/23	call	16	16	0
340	10/23	put	18	17	-1
342.5	10/23	call	22	20	-2
342.5	10/23	put	12	30	+18
345	10/23	call	29	84	+55
345	10/23	put	5	5	0
347.5	10/23	call	12	95	+83
347.5	10/23	put	0	1	+1
350	10/23	call	19	25	+6
350	10/23	put	8	7	-1
352.5	10/23	call	11	25	+14
352.5	10/23	put	5	5	0
355	10/23	call	34	45	+11
355	10/23	put	2	2	0
357.5	10/23	call	8	9	+1
357.5	10/23	put	6	6	0
360	10/23	call	13	15	+2
360	10/23	put	1	1	0
365	10/23	call	5	5	0
367.5	10/23	call	4	4	0
370	10/23	call	5	5	0
375	10/23	call	22	22	0
380	10/23	call	54	54	0
435	10/23	call	1	1	0

Expiration 2026-10-30

GD open interest, settled 2026-10-21, expiration 2026-10-30, strikes 300 to 480

Strike	Expiry	Type	Prior OI	Settled OI	Change
300	10/30	call	1	1	0
300	10/30	put	1	1	0
305	10/30	put	8	8	0
307.5	10/30	put	4	4	0
310	10/30	put	27	27	0
315	10/30	call	1	1	0
315	10/30	put	23	23	0
317.5	10/30	call	3	3	0
317.5	10/30	put	2	2	0
320	10/30	call	14	14	0
320	10/30	put	17	16	-1
322.5	10/30	put	2	2	0
325	10/30	call	11	11	0
325	10/30	put	9	10	+1
327.5	10/30	put	0	10	+10
330	10/30	call	15	15	0
330	10/30	put	41	43	+2
332.5	10/30	call	2	2	0
332.5	10/30	put	3	4	+1
335	10/30	call	7	7	0
335	10/30	put	20	20	0
337.5	10/30	call	7	7	0
337.5	10/30	put	3	3	0
340	10/30	call	95	95	0
340	10/30	put	17	17	0
342.5	10/30	call	3	3	0
342.5	10/30	put	2	2	0
345	10/30	call	14	15	+1
345	10/30	put	2	2	0
347.5	10/30	call	1	1	0
350	10/30	call	23	30	+7
350	10/30	put	7	7	0
352.5	10/30	call	2	2	0
355	10/30	call	18	18	0
357.5	10/30	call	1	1	0
360	10/30	call	13	15	+2
360	10/30	put	3	3	0
365	10/30	call	33	33	0
370	10/30	call	14	16	+2
375	10/30	call	2	2	0
380	10/30	call	6	6	0
385	10/30	call	5	5	0
395	10/30	call	3	3	0
405	10/30	call	5	5	0
480	10/30	call	1	1	0

Expiration 2026-11-06

GD open interest, settled 2026-10-21, expiration 2026-11-06, strikes 305 to 400

Strike	Expiry	Type	Prior OI	Settled OI	Change
305	11/06	put	2	2	0
310	11/06	put	3	3	0
315	11/06	put	2	2	0
320	11/06	put	3	3	0
325	11/06	put	2	2	0
330	11/06	put	3	3	0
335	11/06	call	2	2	0
335	11/06	put	37	37	0
345	11/06	call	3	1	-2
350	11/06	call	32	32	0
352.5	11/06	call	0	1	+1
355	11/06	call	23	23	0
360	11/06	call	18	16	-2
362.5	11/06	call	0	1	+1
365	11/06	call	1	1	0
370	11/06	call	4	5	+1
390	11/06	call	6	6	0
400	11/06	call	1	1	0

Expiration 2026-11-13

GD open interest, settled 2026-10-21, expiration 2026-11-13, strikes 310 to 365

Strike	Expiry	Type	Prior OI	Settled OI
310	11/13	call	1	1
310	11/13	put	2	2
315	11/13	put	12	12
320	11/13	call	1	1
320	11/13	put	3	3
325	11/13	call	3	3
325	11/13	put	5	5
330	11/13	put	6	6
335	11/13	call	1	1
335	11/13	put	10	10
340	11/13	call	1	1
345	11/13	call	3	3
350	11/13	call	11	11
355	11/13	call	14	14
360	11/13	call	25	25
365	11/13	call	1	1

Expiration 2026-11-20

GD open interest, settled 2026-10-21, expiration 2026-11-20, strikes 210 to 500

Strike	Expiry	Type	Prior OI	Settled OI	Change
210	11/20	put	2	2	0
220	11/20	put	7	7	0
230	11/20	put	2	2	0
240	11/20	put	1	1	0
250	11/20	put	1	1	0
260	11/20	put	125	174	+49
270	11/20	put	208	208	0
280	11/20	put	5	5	0
290	11/20	call	2	2	0
290	11/20	put	44	44	0
300	11/20	call	2	2	0
300	11/20	put	67	67	0
310	11/20	call	149	150	+1
310	11/20	put	198	198	0
320	11/20	call	14	14	0
320	11/20	put	127	127	0
325	11/20	put	0	5	+5
327.5	11/20	put	0	7	+7
330	11/20	call	201	201	0
330	11/20	put	203	203	0
340	11/20	call	246	246	0
340	11/20	put	136	136	0
342.5	11/20	put	1	1	0
345	11/20	call	25	26	+1
345	11/20	put	0	1	+1
347.5	11/20	call	2	5	+3
347.5	11/20	put	0	1	+1
350	11/20	call	310	325	+15
350	11/20	put	105	105	0
355	11/20	call	0	3	+3
355	11/20	put	0	1	+1
357.5	11/20	call	0	4	+4
360	11/20	call	176	177	+1
360	11/20	put	80	79	-1
365	11/20	call	52	53	+1
365	11/20	put	0	1	+1
367.5	11/20	call	0	12	+12
370	11/20	call	362	366	+4
370	11/20	put	201	201	0
375	11/20	call	0	10	+10
380	11/20	call	148	248	+100
380	11/20	put	22	22	0
390	11/20	call	402	402	0
400	11/20	call	212	212	0
400	11/20	put	1	1	0
410	11/20	call	64	64	0
420	11/20	call	180	180	0
430	11/20	call	54	54	0
440	11/20	call	40	40	0
450	11/20	call	34	34	0
460	11/20	call	3	3	0
470	11/20	call	1	1	0
480	11/20	call	4	4	0
490	11/20	call	26	26	0
500	11/20	call	2	2	0

Expiration 2026-11-27

GD open interest, settled 2026-10-21, expiration 2026-11-27, strikes 260 to 360

Strike	Expiry	Type	Prior OI	Settled OI
260	11/27	put	1	1
305	11/27	put	5	5
315	11/27	put	1	1
320	11/27	put	2	2
325	11/27	put	3	3
330	11/27	put	1	1
340	11/27	call	1	1
345	11/27	call	6	6
350	11/27	call	5	5
355	11/27	call	1	1
360	11/27	call	1	1

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