Security record · archived quarter
INSP
Inspire Medical Systems, Inc. · Healthcare · Medical - Devices
102Tracked holders
-7Δ holders
22.50MShares held
$1.16BReported value
+11New positions
−19Exits
Momentum inputs (comparable managers):
holder breadth -6.4% ·
share flow -0.5% ·
net new positions -7.8%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 99 | -1 | 27.80M | $1.24B | +14 | −14 |
| Q1 2026 | 102 | -7 | 22.50M | $1.16B | +11 | −19 |
| Q4 2025 | 110 | 0 | 24.43M | $2.25B | +3 | −2 |
| Q3 2025 | 20 | +2 | 13.81M | $1.03B | +2 | −1 |
| Q2 2025 | 16 | -1 | 12.85M | $1.67B | +1 | −2 |
| Q1 2025 | 14 | -1 | 3.76M | $597.97M | — | −1 |
| Q4 2024 | 15 | -2 | 4.14M | $766.98M | — | −2 |
| Q3 2024 | 16 | +1 | 4.78M | $1.01B | +1 | — |
| Q2 2024 | 15 | — | 5.10M | $682.73M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 3.55M | 0.0% | $183.09M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 20 | Wellington Management ✦ | 2.54M | +14.7% | $130.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 21 | Wellington Management ✦ | 2.54M | +14.7% | $130.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | Wellington Management ✦ | 2.54M | +14.7% | $130.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 23 | Wellington Management ✦ | 2.54M | +14.7% | $130.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | Wellington Management ✦ | 2.54M | +14.7% | $130.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 27 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 29 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 30 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 31 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 32 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 33 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 34 | Morgan Stanley ✦ | 1.45M | +15.2% | $74.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 35 | Vanguard Capital Management Llc | 1.27M | — | $65.34M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | D. E. Shaw & Co. ✦ | 1.19M | -1.9% | $61.30M | 0.1% | ▼ Trim | 8 | SEC ↗ |
| 37 | D. E. Shaw & Co. ✦ | 1.19M | -1.9% | $61.30M | 0.1% | ▼ Trim | 8 | SEC ↗ |
| 38 | State Street Global Advisors ✦ (passive) | 956.01K | +4.1% | $49.31M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 39 | Artisan Partners Limited Partnership | 780.58K | -0.7% | $40.26M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 40 | Goldman Sachs Group ✦ | 664.00K | +133.1% | $34.25M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 41 | Goldman Sachs Group ✦ | 664.00K | +133.1% | $34.25M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 42 | Goldman Sachs Group ✦ | 664.00K | +133.1% | $34.25M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 43 | UBS Group AG | 638.93K | +55.3% | $32.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | UBS Group AG | 638.93K | +55.3% | $32.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | UBS Group AG | 638.93K | +55.3% | $32.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Assenagon Asset Management S.A. | 520.17K | +96.3% | $26.83M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Deutsche Bank Ag\ | 513.17K | -0.7% | $26.47M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | Deutsche Bank Ag\ | 513.17K | -0.7% | $26.47M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 49 | Deutsche Bank Ag\ | 513.17K | -0.7% | $26.47M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 50 | Geode Capital Management ✦ (passive) | 510.23K | +3.8% | $26.32M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 51 | Geode Capital Management ✦ (passive) | 510.23K | +3.8% | $26.32M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 52 | Aberdeen Group plc | 477.48K | +3.6% | $24.63M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Renaissance Technologies ✦ | 469.97K | +14.4% | $24.24M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 54 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 57 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 59 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 60 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | UBS AM, a distinct business unit of… | 448.79K | -3.1% | $23.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 64 | Citadel Advisors ✦ | 394.08K | -22.9% | $20.33M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 65 | Citadel Advisors ✦ | 394.08K | -22.9% | $20.33M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 66 | Millennium Management ✦ | 386.15K | +91.0% | $19.92M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 67 | Bnp Paribas Financial Markets | 319.76K | -29.7% | $16.49M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 68 | AQR Capital Management ✦ | 308.66K | +1041.5% | $15.92M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 69 | AQR Capital Management ✦ | 308.66K | +1041.5% | $15.92M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 70 | AQR Capital Management ✦ | 308.66K | +1041.5% | $15.92M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 71 | AQR Capital Management ✦ | 308.66K | +1041.5% | $15.92M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 72 | AQR Capital Management ✦ | 308.66K | +1041.5% | $15.92M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 73 | AQR Capital Management ✦ | 308.66K | +1041.5% | $15.92M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 74 | Bamco Inc /Ny/ | 298.47K | -11.6% | $15.40M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 75 | Amundi | 256.83K | -29.6% | $13.25M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Royal Bank Of Canada | 252.97K | +2203.1% | $13.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Royal Bank Of Canada | 252.97K | +2203.1% | $13.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 78 | Royal Bank Of Canada | 252.97K | +2203.1% | $13.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 79 | Royal Bank Of Canada | 252.97K | +2203.1% | $13.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 80 | Dimensional Fund Advisors Lp | 234.67K | -31.3% | $12.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 81 | Dimensional Fund Advisors Lp | 234.67K | -31.3% | $12.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 82 | Dimensional Fund Advisors Lp | 234.67K | -31.3% | $12.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 83 | Dimensional Fund Advisors Lp | 234.67K | -31.3% | $12.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Dimensional Fund Advisors Lp | 234.67K | -31.3% | $12.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 85 | Susquehanna International Group, Llp | 210.57K | +334.2% | $10.86M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 86 | Northern Trust Corp | 197.03K | -0.2% | $10.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 87 | Northern Trust Corp | 197.03K | -0.2% | $10.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 88 | Northern Trust Corp | 197.03K | -0.2% | $10.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Northern Trust Corp | 197.03K | -0.2% | $10.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | Northern Trust Corp | 197.03K | -0.2% | $10.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | Northern Trust Corp | 197.03K | -0.2% | $10.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | Bank Of America Corp /De/ | 186.07K | -11.4% | $9.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 93 | Bank Of America Corp /De/ | 186.07K | -11.4% | $9.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 94 | Bank Of America Corp /De/ | 186.07K | -11.4% | $9.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | Bank Of America Corp /De/ | 186.07K | -11.4% | $9.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | Bank Of America Corp /De/ | 186.07K | -11.4% | $9.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 97 | Charles Schwab Investment… | 183.35K | -5.6% | $9.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 98 | Cerity Partners LLC | 181.43K | New | $9.36M | 0.0% | New | 1 | SEC ↗ |
| 99 | Cerity Partners LLC | 181.43K | New | $9.36M | 0.0% | New | 1 | SEC ↗ |
| 100 | Cerity Partners LLC | 181.43K | New | $9.36M | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Cerity Partners LLC | $9.36M | 0.0% |
| Cerity Partners LLC | $9.36M | 0.0% |
| Cerity Partners LLC | $9.36M | 0.0% |
Exited
| Marshall Wace | $48.98M | was 0.0% |
| Jane Street Group, Llc | $25.57M | was 0.0% |
| Connor, Clark & Lunn… | $12.58M | was 0.0% |
| Norges Bank | $11.95M | was 0.0% |
| Hrt Financial Lp | $11.23M | was 0.0% |
| Arrowstreet Capital | $7.01M | was 0.0% |
| Credit Agricole S A | $6.24M | was 0.0% |
| Nomura Holdings Inc | $5.62M | was 0.0% |
| Raymond James Financial Inc | $2.82M | was 0.0% |
| Baird Financial Group, Inc. | $2.02M | was 0.0% |
| HighTower Advisors, LLC | $695,691 | was 0.0% |
| Cetera Investment Advisers | $518,425 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 298 holders, 34.81M shares, $1.75B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 07
Kelly Jason P
Officer · 963 sh · $57,347
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 13
SC 13G/A — Soleus Capital Master Fund, L.P.
Aug 12
SC 13G — AQR CAPITAL MANAGEMENT LLC
Jul 31
SC 13G/A — VANGUARD PORTFOLIO MANAGEMENT LLC
Jul 28
SC 13G/A — BlackRock, Inc.
Jul 02
SC 13G — D. E. SHAW & CO, L.P.
May 27
SC 13G — Soleus Capital Master Fund, L.P.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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