Ken Griffin Inspire Medical Systems, Inc. Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Inspire Medical Systems, Inc. stock. As of the latest transaction made, Citadel Advisors LLC holds 1,748,409 shares of INSP stock, worth $151 Million. This represents 0.02% of its overall portfolio holdings.

Number of Shares

1,748,409

Previous 8,675 20054.57%

Holding current value

$151 Million

Previous $1.13 Million 11431.64%

% of portfolio

0.02%

Previous 0.0%

30 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$74.2 - $139.25 $129 Million - $242 Million	1,739,734 Added 20054.57%	1,748,409 $130 Million
Q2 2025 Aug 14, 2025	SELL	$127.18 - $161.88 $6.56 Million - $8.35 Million	-51,611 Reduced 85.61%	8,675 $1.13 Million
Q1 2025 May 15, 2025	BUY	$157.24 - $215.42 $1.24 Million - $1.69 Million	7,865 Added 15.0%	60,286 $9.6 Million
Q4 2024 Feb 14, 2025	SELL	$172.7 - $214.93 $10 Million - $12.4 Million	-57,890 Reduced 52.48%	52,421 $9.72 Million
Q3 2024 Nov 14, 2024	BUY	$125.79 - $216.71 $9.89 Million - $17 Million	78,660 Added 248.52%	110,311 $23.3 Million
Q2 2024 Aug 14, 2024	SELL	$133.83 - $251.19 $8.21 Million - $15.4 Million	-61,340 Reduced 65.96%	31,651 $4.24 Million
Q1 2024 May 15, 2024	BUY	$165.3 - $226.0 $14.7 Million - $20 Million	88,706 Added 2070.15%	92,991 $20 Million
Q4 2023 Feb 14, 2024	SELL	$125.26 - $203.83 $5.61 Million - $9.12 Million	-44,767 Reduced 91.26%	4,285 $871,000
Q3 2023 Nov 14, 2023	SELL	$185.0 - $326.08 $50.1 Million - $88.2 Million	-270,620 Reduced 84.66%	49,052 $9.73 Million
Q2 2023 Aug 14, 2023	BUY	$226.52 - $324.64 $3.28 Million - $4.69 Million	14,460 Added 4.74%	319,672 $104 Million
Q1 2023 May 15, 2023	SELL	$229.06 - $278.01 $74.9 Million - $90.9 Million	-327,118 Reduced 51.73%	305,212 $71.4 Million
Q4 2022 Feb 14, 2023	BUY	$164.02 - $259.76 $13.6 Million - $21.5 Million	82,864 Added 15.08%	632,330 $159 Million
Q3 2022 Nov 14, 2022	BUY	$170.68 - $226.46 $40.8 Million - $54.1 Million	238,946 Added 76.95%	549,466 $97.5 Million
Q2 2022 Aug 15, 2022	BUY	$147.53 - $266.6 $35 Million - $63.2 Million	237,060 Added 322.71%	310,520 $56.7 Million
Q1 2022 May 16, 2022	SELL	$193.94 - $261.91 $38.3 Million - $51.7 Million	-197,226 Reduced 72.86%	73,460 $18.9 Million
Q4 2021 Feb 14, 2022	BUY	$207.57 - $280.17 $37.3 Million - $50.4 Million	179,825 Added 197.91%	270,686 $62.3 Million
Q3 2021 Nov 15, 2021	SELL	$170.0 - $258.58 $33.8 Million - $51.3 Million	-198,533 Reduced 68.6%	90,861 $21.2 Million
Q2 2021 Aug 16, 2021	BUY	$164.93 - $242.23 $39 Million - $57.2 Million	236,335 Added 445.42%	289,394 $55.9 Million
Q1 2021 May 17, 2021	BUY	$182.45 - $249.25 $3.17 Million - $4.34 Million	17,393 Added 48.77%	53,059 $11 Million
Q4 2020 Feb 16, 2021	BUY	$119.35 - $200.46 $1.38 Million - $2.32 Million	11,588 Added 48.13%	35,666 $6.71 Million
Q3 2020 Nov 16, 2020	BUY	$87.5 - $130.91 $1.85 Million - $2.78 Million	21,198 Added 736.04%	24,078 $3.11 Million
Q2 2020 Aug 14, 2020	SELL	$49.5 - $97.93 $3.04 Million - $6.02 Million	-61,474 Reduced 95.52%	2,880 $251,000
Q1 2020 May 15, 2020	BUY	$41.62 - $89.92 $1.58 Million - $3.42 Million	38,029 Added 144.46%	64,354 $3.88 Million
Q4 2019 Feb 14, 2020	SELL	$52.12 - $75.0 $2.3 Million - $3.31 Million	-44,090 Reduced 62.61%	26,325 $1.95 Million
Q3 2019 Nov 14, 2019	SELL	$61.02 - $70.19 $13 Million - $14.9 Million	-212,873 Reduced 75.14%	70,415 $4.3 Million
Q2 2019 Aug 14, 2019	SELL	$47.07 - $60.71 $4.27 Million - $5.51 Million	-90,692 Reduced 24.25%	283,288 $17.2 Million
Q1 2019 May 15, 2019	BUY	$39.48 - $62.0 $10.1 Million - $15.9 Million	256,600 Added 218.61%	373,980 $0
Q4 2018 Feb 14, 2019	SELL	$37.07 - $52.58 $2.72 Million - $3.85 Million	-73,256 Reduced 38.43%	117,380 $4.96 Million
Q3 2018 Nov 13, 2018	BUY	$36.8 - $56.99 $5.81 Million - $9 Million	157,844 Added 481.35%	190,636 $0
Q2 2018 Aug 10, 2018	BUY	$24.05 - $39.5 $788,647 - $1.3 Million	32,792 New	32,792 $0

Others Institutions Holding INSP

# of Institutions

355

Shares Held

25.7M

Call Options Held

97.6K

Put Options Held

192K

View Full List

About Inspire Medical Systems, Inc.

Ticker INSP
Exchange NYSE
Sector Healthcare
Industry Medical Devices
Shares Outstandng 28,788,600
Market Cap $2.49B
Description
Inspire Medical Systems, Inc., a medical technology company, focuses on the development and commercialization of minimally invasive solutions for patients with obstructive sleep apnea (OSA) in the United States and internationally. The company offers Inspire system, a neurostimulation technology that provides a safe and effective treatment for m...

More about INSP

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