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Of the 12 tracked institutions holding INSP, 5 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +5.1pt. It's a gauge of who owns the name, not just how many.
Among the 12 tracked institutional investors we monitor, INSP (INSPIRE MED SYS INC) is held with a combined value of $792.16M across 14,640,753 shares. The largest holder is VANGUARD GROUP INC with a position worth $272.37M. 5 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$792.16M
Total Shares Held
14,640,753
Institutional Holders
12
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $272.37M | 0.00% | -1.6% |
| 2 | BlackRock, Inc. | $211.34M | 0.00% | +33.5% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | $106.29M | 0.02% | -6.0% |
| 4 | AQR CAPITAL MANAGEMENT LLC | $80.94M | 0.04% | +501.6% |
| 5 | STATE STREET CORP | $53.82M | 0.00% | +26.2% |
| 6 | CITADEL ADVISORS LLC | $22.59M | 0.02% | +28.5% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | $19.00M | 0.03% | -9.4% |
| 8 | FMR LLC | $11.95M | 0.00% | +605.2% |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | $7.48M | 0.00% | -7.5% |
| 10 | MILLENNIUM MANAGEMENT LLC | $4.20M | 0.00% | -76.5% |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of INSP with a position worth $272.37M, representing 0.00% of their portfolio. In total, 12 institutional investors hold INSP with a combined value of $792.16M.
Institutional investors hold $792.16M worth of INSP stock across 12 positions. The largest institutional holder is VANGUARD GROUP INC with $272.37M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For INSP, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their INSP positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-08-12 |
| 7.4% | 2026-07-31 |
| 14.4% | 2026-07-28 |
SEC Schedule 13D (activist) and 13G (passive) filings for INSP. Filed when an investor acquires 5%+ ownership.
Last Close
$62.36
2026-08-21
YTD
-32.4%
21% of 52-week range
