INSPIRE MEDICAL SYSTEMS INC (INSP) Institutional Ownership Changes & 13F Activity

INSPIRE MEDICAL SYSTEMS INC (INSP). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Aqr Capital Management Llc, Deerfield Management Company, L.P., Nomura Holdings Inc, Assenagon Asset Management S.A., and Millennium Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheSell-480-2.3%20,525$915.62KQ2 2026Sep 09, 2026
Parkside Financial Bank & TrustBuy+101+206.1%150$6.69KQ2 2026Sep 04, 2026
Citadel Advisors LlcBuy+112,258+28.5%506,334$22.59MQ2 2026Sep 02, 2026
Cornerstone Financial Management LlcBuy+99$401.00Q2 2026Aug 28, 2026
Corient Private Wealth LlcBuy+52,275+993.8%57,535$2.57MQ2 2026Aug 27, 2026
California State Teachers Retirement SystemSell-4,947-14.4%29,526$1.32MQ2 2026Aug 24, 2026
Assenagon Asset Management S.A.Buy+344,221+66.2%864,395$38.56MQ2 2026Aug 21, 2026
Nantahala Capital Management, LlcBuy+269,474269,474$12.02MQ2 2026Aug 19, 2026
Mercer Global Advisors IncBuy+18,967+317.3%24,944$1.11MQ2 2026Aug 19, 2026
Fulcrum Asset Management LlpBuy+106106$4.76KQ2 2026Aug 18, 2026
Empowered Funds, LlcBuy+15,781+45.2%50,657$2.26MQ2 2026Aug 17, 2026
Caitlin John, LlcBuy+19+190.0%29$1.29KQ2 2026Aug 17, 2026
Aqr Capital Management LlcBuy+1,548,138+501.6%1,856,800$80.94MQ2 2026Aug 14, 2026
Deerfield Management Company, L.P.Sell-1,406,376-52.0%1,296,862$57.85MQ2 2026Aug 14, 2026
Nomura Holdings IncBuy+1,369,4101,369,410$61.09MQ2 2026Aug 14, 2026
Millennium Management LlcSell-291,997-75.6%94,149$4.20MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+281,925+23.7%1,470,462$65.60MQ2 2026Aug 14, 2026
Royal Bank Of CanadaSell-245,253-96.9%7,718$345.00KQ2 2026Aug 14, 2026
Barclays PlcBuy+239,629+354.3%307,270$13.71MQ2 2026Aug 14, 2026
Cerity Partners LlcSell-161,467-89.0%19,959$890.37KQ2 2026Aug 14, 2026
Susquehanna International Group, LlpSell-157,375-74.7%53,198$2.37MQ2 2026Aug 14, 2026
Wellington Management Group LlpSell-153,294-6.0%2,382,660$106.29MQ2 2026Aug 14, 2026
Rock Springs Capital Management LpBuy+112,200+85.1%244,000$10.88MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+110,285110,285$4.92MQ2 2026Aug 14, 2026
Integral Health Asset Management, LlcBuy+100,000100,000$4.46MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+87,51887,518$3.90MQ2 2026Aug 14, 2026
Bank Of America CorpBuy+62,733+33.7%248,802$11.10MQ2 2026Aug 14, 2026
Gotham Asset Management, LlcSell-51,910-59.2%35,823$1.60MQ2 2026Aug 14, 2026
Worldquant Millennium Advisors LlcSell-46,880-62.3%28,359$1.27MQ2 2026Aug 14, 2026
Squarepoint Ops LlcSell-42,555-63.7%24,259$1.08MQ2 2026Aug 14, 2026
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Frequently asked questions about INSP activity

  • Which institutional owners are buying INSP?

    Institutional owners buying INSP include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in INSP activity?

    "Buy" means an investor increased their reported position in INSP compared to the prior reporting period. This reflects growing exposure to INSPIRE MEDICAL SYSTEMS INC (INSP) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in INSP increasing?

    Institutional interest in INSP can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.