Citadel Advisors Llc

13F Holdings History for Inspire Medical Systems, Inc. - Common stock, par value $0.001 per share (INSP)

Symbol: INSP on NYSE
Investment type: Equity / Common stock, par value $0.001 per share
Latest Disclosed Ownership: 1.71M shares
Security Ownership: 5.8%

Shares, Excluding Options vs Price

Value, Excluding Options

Kenneth Griffin ownership in Inspire Medical Systems, Inc. Common stock, par value $0.001 per share (INSP)

2025-10-06 - Kenneth Griffin has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 1.71M shares of Inspire Medical Systems, Inc. Common stock, par value $0.001 per share (INSP). This represents 5.8% percent ownership of the company.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
Kenneth Griffin	5.8%		$127M	1.71M			$74.20	13G	9/29/2025	6 Oct 2025 17:43:14

Holdings date	Option	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
9/30/2025		0.1%	+0.1%	$130M	1.75M	+1,739,734	+20055%	$74.20	Q3 2025
9/30/2025	call	0%	+0%	$2.27M	30.6K	+8,500	+38.5%	$74.20	Q3 2025
9/30/2025	put	0%	+0%	$5.83M	78.6K	+51,900	+194%	$74.20	Q3 2025
6/30/2025		0%	-0.01%	$1.13M	8.68K	-51,611	-85.6%	$129.77	Q2 2025
6/30/2025	call	0%	0%	$2.87M	22.1K	-22,500	-50.4%	$129.77	Q2 2025
6/30/2025	put	0%	0%	$3.46M	26.7K	-66,600	-71.4%	$129.77	Q2 2025
3/31/2025		0.01%	+0%	$9.6M	60.3K	+7,865		$159.28	Q1 2025
3/31/2025	call	0%	0%	$7.1M	44.6K	-3,900		$159.28	Q1 2025
3/31/2025	put	0%	+0%	$14.9M	93.3K	+27,800		$159.28	Q1 2025
12/31/2024		0.01%	-0.01%	$9.72M	52.4K	-57,890	-52.5%	$185.38	Q4 2024
12/31/2024	call	0%	0%	$8.99M	48.5K	-38,500	-44.3%	$185.38	Q4 2024
12/31/2024	put	0%	+0%	$12.1M	65.5K	+5,600	+9.35%	$185.38	Q4 2024
9/30/2024		0.02%	+0.02%	$23.3M	110K	+78,660	+249%	$211.05	Q3 2024
9/30/2024	call	0%	0%	$18.4M	87K	-25,500	-22.7%	$211.05	Q3 2024
9/30/2024	put	0%	0%	$12.6M	59.9K	-31,400	-34.4%	$211.05	Q3 2024
6/30/2024		0%	-0.01%	$4.24M	31.7K	-61,340	-66%	$133.83	Q2 2024
6/30/2024	call	0%	+0%	$15.1M	113K	+7,600	+7.24%	$133.83	Q2 2024
6/30/2024	put	0%	0%	$12.2M	91.3K	-27,800	-23.3%	$133.83	Q2 2024
3/31/2024		0.02%	+0.02%	$20M	93K	+88,706	+2070%	$214.79	Q1 2024
3/31/2024	call	0.01%	+0%	$22.5M	105K	+32,400	+44.7%	$214.79	Q1 2024
3/31/2024	put	0.01%	+0%	$25.6M	119K	+36,500	+44.2%	$214.79	Q1 2024
12/31/2023		0%	-0.01%	$872K	4.29K	-44,767	-91.3%	$203.43	Q4 2023
12/31/2023	call	0%	0%	$14.7M	72.5K	-30,200	-29.4%	$203.43	Q4 2023
12/31/2023	put	0%	+0%	$16.8M	82.6K	+23,900	+40.7%	$203.43	Q4 2023
9/30/2023		0.01%	-0.06%	$9.73M	49.1K	-270,620	-84.7%	$198.44	Q3 2023
9/30/2023	call	0.01%	+0%	$20.4M	103K	+45,600	+79.9%	$198.44	Q3 2023
9/30/2023	put	0%	+0%	$11.6M	58.7K	+6,700	+12.9%	$198.44	Q3 2023
6/30/2023		0.12%	+0.01%	$104M	320K	+14,460	+4.74%	$324.64	Q2 2023
6/30/2023	call	0%	+0%	$18.5M	57.1K	+15,500	+37.3%	$324.64	Q2 2023
6/30/2023	put	0%	+0%	$16.9M	52K	+3,900	+8.11%	$324.64	Q2 2023
3/31/2023		0.08%	-0.08%	$71.4M	305K	-327,118	-51.7%	$234.07	Q1 2023
3/31/2023	call	0%	0%	$9.74M	41.6K	-61,000	-59.5%	$234.07	Q1 2023
3/31/2023	put	0%	+0%	$11.3M	48.1K	+1,300	+2.78%	$234.07	Q1 2023
12/31/2022		0.18%	+0.02%	$159M	632K	+82,864	+15.1%	$251.88	Q4 2022
12/31/2022	call	0.01%	+0%	$25.8M	103K	+41,600	+68.2%	$251.88	Q4 2022
12/31/2022	put	0%	+0%	$11.8M	46.8K	+14,300	+44%	$251.88	Q4 2022
9/30/2022		0.12%	+0.05%	$97.5M	549K	+238,946	+77%	$177.37	Q3 2022
9/30/2022	call	0%	+0%	$10.8M	61K	+11,800	+24%	$177.38	Q3 2022
9/30/2022	put	0%	0%	$5.77M	32.5K	-10,300	-24.1%	$177.38	Q3 2022
6/30/2022		0.08%	+0.06%	$56.7M	311K	+237,060	+323%	$182.67	Q2 2022
6/30/2022	call	0%	+0%	$8.99M	49.2K	+1,700	+3.58%	$182.66	Q2 2022
6/30/2022	put	0%	+0%	$7.82M	42.8K	+21,300	+99.1%	$182.66	Q2 2022
3/31/2022		0.02%	-0.06%	$18.9M	73.5K	-197,226	-72.9%	$256.70	Q1 2022
3/31/2022	call	0%	+0%	$12.2M	47.5K	+13,700	+40.5%	$256.69	Q1 2022
3/31/2022	put	0%	+0%	$5.52M	21.5K	+6,000	+38.7%	$256.70	Q1 2022
12/31/2021		0.07%	+0.04%	$62.3M	271K	+179,825	+198%	$230.06	Q4 2021
12/31/2021	call	0%	+0%	$7.78M	33.8K	+14,600	+76%	$230.06	Q4 2021
12/31/2021	put	0%	+0%	$3.57M	15.5K	+4,000	+34.8%	$230.06	Q4 2021
9/30/2021		0.02%	-0.05%	$21.2M	90.9K	-198,533	-68.6%	$232.88	Q3 2021
9/30/2021	call	0%	+0%	$4.47M	19.2K	+7,700	+67%	$232.86	Q3 2021
9/30/2021	put	0%	0%	$2.68M	11.5K	-9,100	-44.2%	$232.87	Q3 2021
6/30/2021		0.06%	+0.05%	$55.9M	289K	+236,335	+445%	$193.26	Q2 2021
6/30/2021	call	0%	0%	$2.22M	11.5K	-600	-4.96%	$193.22	Q2 2021
6/30/2021	put	0%	0%	$3.98M	20.6K	-49,900	-70.8%	$193.25	Q2 2021
3/31/2021		0.01%	+0%	$11M	53.1K	+17,393	+48.8%	$207.00	Q1 2021
3/31/2021	call	0%	0%	$2.51M	12.1K	-9,100	-42.9%	$207.02	Q1 2021
3/31/2021	put	0%	+0%	$14.6M	70.5K	+1,900	+2.77%	$206.99	Q1 2021
12/31/2020		0.01%	+0%	$6.71M	35.7K	+11,588	+48.1%	$188.11	Q4 2020
12/31/2020	call	0%	0%	$3.99M	21.2K	-14,400	-40.4%	$188.11	Q4 2020
12/31/2020	put	0%	+0%	$12.9M	68.6K	+39,400	+135%	$188.09	Q4 2020
9/30/2020		0%	+0%	$3.11M	24.1K	+21,198	+736%	$129.04	Q3 2020
9/30/2020	call	0%	+0%	$4.59M	35.6K	+19,400	+120%	$129.04	Q3 2020
9/30/2020	put	0%	+0%	$3.77M	29.2K	+7,700	+35.8%	$129.04	Q3 2020
6/30/2020		0%	-0.01%	$251K	2.88K	-61,474	-95.5%	$87.15	Q2 2020
6/30/2020	call	0%	+0%	$1.41M	16.2K	+9,000	+125%	$87.04	Q2 2020
6/30/2020	put	0%	+0%	$1.87M	21.5K	+16,000	+291%	$87.02	Q2 2020
3/31/2020		0.01%	+0%	$3.88M	64.4K	+38,029	+144%	$60.28	Q1 2020
3/31/2020	call	0%	0%	$434K	7.2K	-300	-4%	$60.28	Q1 2020
3/31/2020	put	0%	0%	$332K	5.5K	-5,000	-47.6%	$60.36	Q1 2020
12/31/2019		0%	0%	$1.95M	26.3K	-44,090	-62.6%	$74.23	Q4 2019
12/31/2019	call	0%	0%	$557K	7.5K	-11,000	-59.5%	$74.27	Q4 2019
12/31/2019	put	0%	0%	$779K	10.5K	-8,100	-43.5%	$74.19	Q4 2019
9/30/2019		0.01%	-0.02%	$4.3M	70.4K	-212,873	-75.1%	$61.02	Q3 2019
9/30/2019	call	0%	+0%	$1.13M	18.5K	+7,500	+68.2%	$61.03	Q3 2019
9/30/2019	put	0%	+0%	$1.14M	18.6K	+14,000	+304%	$61.02	Q3 2019
6/30/2019		0.02%	-0.01%	$17.2M	283K	-90,692	-24.3%	$60.65	Q2 2019
6/30/2019	call	0%	+0%	$667K	11K	+11,000	NEW	$60.64	Q2 2019
6/30/2019	put	0%	0%	$279K	4.6K	-4,900	-51.6%	$60.65	Q2 2019
3/31/2019		0.03%	+0.02%	$21.2M	374K	+256,600	+219%	$56.78	Q1 2019
3/31/2019	call		0%	$0	0	-5,800	-100%		Q1 2019
3/31/2019	put	0%	+0%	$539K	9.5K	+9,500	NEW	$56.74	Q1 2019
12/31/2018		0.01%	0%	$4.96M	117K	-73,256	-38.4%	$42.25	Q4 2018
12/31/2018	call	0%	+0%	$245K	5.8K	+5,800	NEW	$42.24	Q4 2018
9/30/2018		0.01%	+0.01%	$8.02M	191K	+157,844	+481%	$42.08	Q3 2018
6/30/2018		0%	+0%	$1.17M	32.8K	+32,792	NEW	$35.65	Q2 2018

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.