SIBN
SI-BONE, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth +15.4% ·
share flow +12.6% ·
net new positions +13.3%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 70 | -5 | 21.53M | $351.34M | +5 | −11 |
| Q1 2026 | 79 | +1 | 23.03M | $291.05M | +5 | −4 |
| Q4 2025 | 78 | 0 | 24.06M | $474.39M | — | — |
| Q3 2025 | 19 | +1 | 12.33M | $181.55M | +1 | — |
| Q2 2025 | 15 | +2 | 10.81M | $203.36M | +2 | — |
| Q1 2025 | 10 | +1 | 3.68M | $51.58M | +1 | — |
| Q4 2024 | 9 | +1 | 3.29M | $46.06M | +1 | — |
| Q3 2024 | 7 | -4 | 2.33M | $32.61M | — | −4 |
| Q2 2024 | 11 | — | 2.96M | $38.30M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 3.47M | — | $65.30M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 2.45M | — | $46.08M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 2.45M | — | $46.08M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 2.45M | — | $46.08M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 2.45M | — | $46.08M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 2.45M | — | $46.08M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | State Street Global Advisors ✦ (passive) | 1.03M | -4.9% | $19.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 21 | Geode Capital Management ✦ (passive) | 912.14K | -5.2% | $17.17M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 22 | Geode Capital Management ✦ (passive) | 912.14K | -5.2% | $17.17M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 23 | Wellington Management ✦ | 488.37K | -1.1% | $9.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 24 | Wellington Management ✦ | 488.37K | -1.1% | $9.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 25 | Wellington Management ✦ | 488.37K | -1.1% | $9.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 26 | Wellington Management ✦ | 488.37K | -1.1% | $9.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 27 | Wellington Management ✦ | 488.37K | -1.1% | $9.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 28 | Marshall Wace ✦ | 436.21K | +18.2% | $8.21M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Marshall Wace ✦ | 436.21K | +18.2% | $8.21M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | Marshall Wace ✦ | 436.21K | +18.2% | $8.21M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | Renaissance Technologies ✦ | 419.70K | +97.0% | $7.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 32 | Citadel Advisors ✦ | 399.51K | +174.5% | $7.52M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | Citadel Advisors ✦ | 399.51K | +174.5% | $7.52M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 34 | D. E. Shaw & Co. ✦ | 343.49K | New | $6.46M | 0.0% | New | 1 | SEC ↗ |
| 35 | Millennium Management ✦ | 337.77K | +47.1% | $6.36M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Point72 Asset Management ✦ | 250.90K | New | $4.72M | 0.0% | New | 1 | SEC ↗ |
| 37 | Two Sigma Investments ✦ | 186.17K | +57.7% | $3.50M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 38 | AQR Capital Management ✦ | 48.38K | +53.5% | $910,568 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 39 | AQR Capital Management ✦ | 48.38K | +53.5% | $910,568 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 40 | AQR Capital Management ✦ | 48.38K | +53.5% | $910,568 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 41 | AQR Capital Management ✦ | 48.38K | +53.5% | $910,568 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 42 | T. Rowe Price ✦ | 34.49K | +5.4% | $650,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 43 | Fidelity (FMR) ✦ | 2.24K | — | $42,112 | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Fidelity (FMR) ✦ | 2.24K | — | $42,112 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $6.46M | 0.0% |
| Point72 Asset Management | $4.72M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 178 holders, 43.26M shares, $537.87M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
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)
Officer · 11.23K sh · $224,785
Officer, Director · 3.92K sh · $78,538
Officer, Director · 51.88K sh · $1.01M
Officer · 5.75K sh · $112,354
Officer, Director · 2.24K sh · $41,772
Officer, Director · 1.97K sh · $36,755
Officer, Director · 3.89K sh · $72,616
Officer, Director · 3.65K sh · $68,144
Officer, Director · 3.20K sh · $59,778
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology