Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in SIBN held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | First Light Asset Management, LLC | 5.4M | $67.6M | +6.4% | 12.071% | 6.06% |
| 2 | BlackRock, Inc. | 3.4M | $43.3M | -1.7% | 7.731% | 0.00% |
| 3 | AMERICAN CENTURY COMPANIES INC | 2.5M | $31.7M | +9.1% | 5.657% | 0.02% |
| 4 | BROWN ADVISORY INC | 2.1M | $26.8M | -13.8% | 4.785% | 0.04% |
| 5 | CADIAN CAPITAL MANAGEMENT, LP | 1.9M | $23.8M | +61.2% | 4.256% | 2.90% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | $22.3M | — | 3.978% | 0.00% |
| 7 | GRANAHAN INVESTMENT MANAGEMENT INC/MA | 1.7M | $22.0M | +97.6% | 3.921% | 1.06% |
| 8 | Impax Asset Management Group plc | 1.4M | $18.0M | +18.8% | 3.213% | 0.13% |
| 9 | Nuveen, LLC | 1.3M | $16.2M | -9.6% | 2.899% | 0.00% |
| 10 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 1.2M | $15.7M | -10.0% | 2.806% | 0.11% |
| 11 | STATE STREET CORP | 1.1M | $14.3M | +12.4% | 2.548% | 0.00% |
| 12 | PARADIGM CAPITAL MANAGEMENT INC/NY | 1.1M | $14.2M | +113.3% | 2.540% | 0.54% |
| 13 | GILDER GAGNON HOWE & CO LLC | 1.0M | $13.2M | +153.3% | 2.364% | 0.16% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 952K | $12.0M | +3.3% | 2.146% | 0.00% |
| 15 | Champlain Investment Partners, LLC | 878K | $11.1M | -21.4% | 1.979% | 0.14% |
| 16 | Point72 Asset Management, L.P. | 840K | $10.6M | +12.7% | 1.895% | 0.01% |
| 17 | WELLINGTON MANAGEMENT GROUP LLP | 773K | $9.8M | -6.1% | 1.742% | 0.00% |
| 18 | MORGAN STANLEY | 713K | $9.0M | +247.7% | 1.607% | 0.00% |
| 19 | First Eagle Investment Management, LLC | 639K | $8.1M | +18.9% | 1.441% | 0.01% |
| 20 | GOLDMAN SACHS GROUP INC | 622K | $7.9M | -7.9% | 1.403% | 0.00% |
| 21 | DIMENSIONAL FUND ADVISORS LP | 619K | $7.8M | +41.8% | 1.396% | 0.00% |
| 22 | Pier Capital, LLC | 477K | $6.0M | -1.7% | 1.075% | 0.99% |
| 23 | RENAISSANCE TECHNOLOGIES LLC | 473K | $6.0M | +101.6% | 1.066% | 0.01% |
| 24 | PEREGRINE CAPITAL MANAGEMENT LLC | 428K | $5.4M | +13.0% | 0.965% | 0.20% |
| 25 | BANK OF AMERICA CORP /DE/ | 419K | $5.3M | +8.7% | 0.946% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in SIBN — a direct measure of their conviction.
Filings activity in SIBN during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 175 | 3.3% | 79.18% | 37.29 pp | $542M | 32% |
| Q4 2025 | 181 | +4.0% | 116.47% | +28.13 pp | $796M | +32% |
| Q3 2025 | 174 | 2.2% | 88.34% | 20.67 pp | $604M | 19% |
| Q2 2025 | 178 | +13% | 109.01% | +28.34 pp | $745M | +35% |
| Q1 2025 | 158 | +9.7% | 80.67% | +8.59 pp | $552M | +12% |
| Q4 2024 | 144 | +9.9% | 72.08% | 1.96 pp | $493M | 2.6% |
| Q3 2024 | 131 | 3.0% | 74.04% | +1.66 pp | $506M | +2.3% |
| Q2 2024 | 135 | — | 72.38% | — | $495M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying SIBN stock.
Based on Q1 2026 13F filings, institutional ownership of SI-BONE, Inc. stands at 79.2%, held across 175 reporting institutions.
First Light Asset Management, LLC is the largest reported institutional holder of SIBN, with approximately 5,353,190 shares worth $0.07B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of SIBN, including Point72 Asset Management, L.P., RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for SIBN is 40 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
31 institutions opened new positions in SIBN during Q1 2026, while 37 fully exited. 34 added to existing positions and 108 trimmed.
SIBN institutional ownership fell by 37.29 percentage points quarter-over-quarter, with a net change of -6 holders.
The top 10 institutions account for 53.1% of all reported 13F value in SIBN, and the top 25 account for 79.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
SI-BONE, Inc. (SIBN) Institutional Ownership