Who owns SI-BONE, Inc.?
Institutional ownership of SIBN from SEC Form 13F filings across 120 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
120
13F holders
$394.5M
value, 2026 filers
54.8%
of shares outstanding (24.3M sh)
19
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of SIBN's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.7M | $60.0M | 0.0% | 8.3% | +7.2% |
| 2 | AMERICAN CENTURY COMPANIES INC | 2.5M | $41.0M | 0.0% | 5.7% | +0.1% |
| 3 | BROWN ADVISORY INC | 2.1M | $33.9M | 0.1% | 4.7% | -2.1% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | $30.0M | 0.0% | 4.1% | -47.9% |
| 5 | GILDER GAGNON HOWE & CO LLC | 1.3M | $20.4M | 0.2% | 2.8% | +19.5% |
| 6 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 1.2M | $18.9M | 0.1% | 2.6% | -6.9% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $17.6M | 0.0% | 2.4% | +13.1% |
| 8 | Nuveen, LLC | 1.0M | $16.7M | 0.0% | 2.3% | -20.2% |
| 9 | Point72 Asset Management, L.P. | 790,323 | $12.9M | 0.0% | 1.8% | -6.0% |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | 742,857 | $12.1M | 0.0% | 1.7% | -3.9% |
| 11 | MARSHALL WACE, LLP | 690,288 | $11.3M | 0.0% | 1.6% | +310.6% |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | 548,287 | $8.9M | 0.0% | 1.2% | +32.6% |
| 13 | GOLDMAN SACHS GROUP INC | 441,912 | $7.2M | 0.0% | 1% | -29.0% |
| 14 | NORTHERN TRUST CORP | 439,161 | $7.2M | 0.0% | 1% | +22.6% |
| 15 | HighMark Wealth Management LLC | 425,049 | $6.9M | 2.3% | 1% | +165.9% |
| 16 | BANK OF AMERICA CORP /DE/ | 421,528 | $6.9M | 0.0% | 1% | +0.5% |
| 17 | MILLENNIUM MANAGEMENT LLC | 364,286 | $5.9M | 0.0% | 0.8% | -1.4% |
| 18 | Sixth Street Partners Management Company, L.P.NEW | 342,784 | $5.6M | 1.0% | 0.8% | new |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 342,784 | $5.6M | 0.0% | 0.8% | +8.7% |
| 20 | TOCQUEVILLE ASSET MANAGEMENT L.P. | 304,000 | $5.0M | 0.1% | 0.7% | 0.0% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 288,877 | $4.7M | 0.0% | 0.7% | +5.2% |
| 22 | SEI INVESTMENTS CO | 274,747 | $4.5M | 0.0% | 0.6% | -3.5% |
| 23 | D. E. Shaw & Co., Inc. | 185,868 | $3.0M | 0.0% | 0.4% | -1.7% |
| 24 | VICTORY CAPITAL MANAGEMENT INC | 145,170 | $2.4M | 0.0% | 0.3% | -4.5% |
| 25 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 133,141 | $2.2M | 0.0% | 0.3% | -3.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.