SIBN · SI-BONE, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 169 13F filersWho Holds SIBN
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 167 filers, like-for-like change +9.4%; actively managed books +13.9%; index-like books -3.9%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 62.0% | 89 | +20.3% |
| Exempt adviser | 1.5% | 1 | +14.8% |
| Adviser | 1.8% | 5 | +15.5% |
| Bank | 5.4% | 12 | +11.6% |
| Insurer | 0.2% | 2 | +48.6% |
| Benefit plan | 0.1% | 2 | +10.7% |
| Non-US | 0.2% | 5 | -6.5% |
| Holding company | 13.5% | 7 | -7.8% |
| Broker-dealer | 0.0% | 0 | — |
| Unknown | 15.3% | 44 | -10.8% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 22.6% | 26 | -3.9% |
| Systematic-like | 5.5% | 18 | -6.7% |
| Concentrated | 26.9% | 14 | +52.2% |
| Diversified active | 45.1% | 109 | +1.5% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 39.0% | 83 | +1.6% |
| Medium turnover | 48.6% | 44 | +20.3% |
| High turnover | 6.1% | 26 | -10.9% |
| Unknown | 6.4% | 14 | +8.5% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 7.0% | 23 | +5.7% |
| Medium horizon | 18.7% | 26 | +17.0% |
| Long horizon | 45.9% | 101 | -1.2% |
| Unknown | 28.3% | 17 | +26.9% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 4.0% | 22 | +4.7% |
| $1B to $10B | 40.2% | 48 | +31.9% |
| $10B to $100B | 17.6% | 45 | -6.3% |
| $100B or more | 38.1% | 52 | -0.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 7.2% | 32 | +17.4% |
| Pooled investment vehicles | 29.0% | 22 | +37.3% |
| Registered funds and BDCs | 15.3% | 12 | +10.0% |
| Pension and profit sharing plans | 0.3% | 2 | +1.2% |
| Insurance companies | 0.1% | 3 | +20.2% |
| Governments and sovereign funds | 0.5% | 4 | -48.0% |
| Other investment advisers | 0.0% | 3 | -5.1% |
| Diversified | 9.5% | 11 | +7.1% |
| Other | 0.0% | 0 | — |
| Unknown | 38.0% | 78 | -4.9% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 36.5% | 28 | +30.3% |
| Private equity funds | 0.4% | 5 | +7.0% |
| Venture capital funds | 0.0% | 1 | +256.8% |
| Real estate funds | 0.0% | 4 | +852.7% |
| Securitized asset funds | 0.1% | 1 | -31.6% |
| Other private funds | 7.3% | 11 | -3.3% |
| Mixed private funds | 0.7% | 2 | +0.2% |
| No private funds | 18.4% | 38 | +15.5% |
| Private funds, type not stated | 0.0% | 0 | -100.0% |
| Unknown | 36.5% | 77 | -5.5% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 94.3% | 140 | +10.7% |
| Outside the US | 5.7% | 27 | -8.6% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-03-31 13F and 3 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
167 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 50.2% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies SIBN's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | NPCE NeuroPace Inc | 4 |
| 2 | CARL Carlsmed, Inc. | 3 |
| 3 | MASS 908 Devices Inc. | 4 |
| 4 | TCMD Tactile Systems Technology Inc | 4 |
| 5 | NEO Neogenomics Inc | 4 |
| 6 | ALHC Alignment Healthcare, Inc. | 4 |
| 7 | KIDS Orthopediatrics Corp | 3 |
| 8 | THRM Gentherm Inc | 3 |
| 9 | IRTC iRhythm Holdings, Inc. | 4 |
| 10 | XERS Xeris Biopharma Holdings, Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not SIBN, quarter ended Jun 30, 2026Found through its holder-overlap peers: NPCE, CARL, MASS, TCMD, NEO, ALHC, KIDS, THRM, IRTC, XERS, ATRC, AIP, OMCL, EWTX, RDNT, OLLI, FROG, MAMA, TWST, XMTR. 1,021 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Artisan Partners Limited Partnership Registered adviser, Diversified active | $742,811,528 5 held | TWST, IRTC, EWTX |
| 2 | PRIMECAP MANAGEMENT CO/CA/ Registered adviser, Diversified active | $707,850,644 2 held | XMTR, OLLI |
| 3 | FIRST TRUST ADVISORS LP Registered adviser, Diversified active | $706,168,051 14 held | FROG, XMTR, NEO |
| 4 | Driehaus Capital Management LLC Registered adviser, Diversified active | $661,284,924 8 held | EWTX, XMTR, TWST |
| 5 | ORBIMED ADVISORS LLC Registered adviser, Diversified active | $654,432,765 2 held | EWTX, NPCE |
| 6 | WASATCH ADVISORS LP Registered adviser, Diversified active | $645,043,783 5 held | OLLI, FROG, MAMA |
| 7 | Hood River Capital Management LLC Registered adviser, Diversified active | $578,492,989 6 held | XMTR, ALHC, RDNT |
| 8 | RTW INVESTMENTS, LP Registered adviser, Diversified active | $558,535,856 2 held | RDNT, IRTC |
| 9 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $500,408,782 6 held | ALHC, OLLI, TWST |
| 10 | ARK Investment Management LLC Registered adviser, Diversified active | $494,771,624 4 held | TWST, MASS, FROG |
Fund Ownership of SIBN by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 13.19% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.00% | 1,346,366 |
| Index ETFs | 10.19% | 4,566,887 |
| Active ETFs | 0.64% | 284,693 |
| Active funds | 22.62% | 10,137,948 |
| Unclassified | 0.35% | 154,897 |
| All registered funds | 36.79% | 16,490,791 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid First Light Asset Management, LLC Registered adviser | $132,648,715 | 16.94% | 8,127,985 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $59,996,542 | 7.66% | 3,676,259 | Shares | 2026-08-07 | |
| Mid CADIAN CAPITAL MANAGEMENT, LP Registered adviser | $54,632,407 | 6.98% | 3,347,574 | Shares | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $40,978,916 | 5.23% | 2,510,963 | Shares | 2026-08-12 | |
| Large BROWN ADVISORY INC | $33,898,826 | 4.33% | 2,077,134 | Shares | 2026-08-14 | |
| Mid Granahan Investment Management, LLC Registered adviser | $31,516,890 | 4.03% | 1,931,182 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $30,004,303 | 3.83% | 1,838,499 | Shares | 2026-08-13 | |
| Large Impax Asset Management Group plc Holding company | $23,256,163 | 2.97% | 1,425,010 | Shares | 2026-08-11 | |
| Mid GILDER GAGNON HOWE & CO LLC Registered adviser | $20,449,645 | 2.61% | 1,253,042 | Shares | 2026-08-14 | |
| Mid PARADIGM CAPITAL MANAGEMENT INC/NY Registered adviser | $20,125,824 | 2.57% | 1,233,200 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $19,817,147 | 2.53% | 1,214,286 | Shares | 2026-09-22 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC Registered adviser | $18,907,960 | 2.42% | 1,158,576 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $17,574,011 | 2.24% | 1,076,839 | Shares | 2026-08-12 | |
| Mega Nuveen, LLC | $16,744,906 | 2.14% | 1,026,036 | Shares | 2026-08-11 | |
| Mid Champlain Investment Partners, LLC Registered adviser | $14,630,259 | 1.87% | 896,462 | Shares | 2026-08-12 | |
| Large Point72 Asset Management, L.P. Registered adviser | $12,898,071 | 1.65% | 790,323 | Shares | 2026-08-14 | |
| Large First Eagle Investment Management, LLC Registered adviser | $12,549,117 | 1.60% | 768,941 | Shares | 2026-08-24 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $12,123,425 | 1.55% | 742,857 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $11,559,764 | 1.48% | 708,319 | Shares | 2026-08-11 | |
| Large MARSHALL WACE, LLP Exempt adviser | $11,265,497 | 1.44% | 690,288 | Shares | 2026-08-13 | |
| Mid NEXT CENTURY GROWTH INVESTORS LLC Adviser | $9,551,916 | 1.22% | 585,289 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $8,948,043 | 1.14% | 548,287 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $7,212,003 | 0.92% | 441,912 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $7,167,106 | 0.92% | 439,161 | Shares | 2026-08-13 | |
| Small HighMark Wealth Management LLC Registered adviser | $6,936,799 | 0.89% | 425,049 | Shares | 2026-08-12 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $6,879,336 | 0.88% | 421,528 | Shares | 2026-08-14 | |
| Mid PEREGRINE CAPITAL MANAGEMENT LLC Registered adviser | $6,648,164 | 0.85% | 407,363 | Shares | 2026-07-17 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $6,447,836 | 0.82% | 395,088 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $5,945,147 | 0.76% | 364,286 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $5,594,234 | 0.71% | 342,784 | Shares | 2026-08-14 | |
| Small Parkman Healthcare Partners LLC Registered adviser | $5,364,155 | 0.69% | 328,686 | Shares | 2026-08-14 | |
| Mid TOCQUEVILLE ASSET MANAGEMENT L.P. Registered adviser | $4,961,280 | 0.63% | 304,000 | Shares | 2026-08-10 | |
| Small ESSEX INVESTMENT MANAGEMENT CO LLC Registered adviser | $4,946,298 | 0.63% | 263,101 | Shares | 2026-10-19 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $4,714,472 | 0.60% | 288,877 | Shares | 2026-08-13 | |
| Mega SEI INVESTMENTS CO | $4,483,870 | 0.57% | 274,747 | Shares | 2026-08-14 | |
| Mid HARBOR CAPITAL ADVISORS, INC. Registered adviser | $4,398,321 | 0.56% | 269,505 | Shares | 2026-08-07 | |
| Small Pier Capital, LLC Registered adviser | $4,304,905 | 0.55% | 263,781 | Shares | 2026-08-05 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $4,142,796 | 0.53% | 253,848 | Shares | 2026-08-14 | |
| Small VELA Investment Management, LLC Registered adviser | $3,281,854 | 0.42% | 201,094 | Shares | 2026-08-27 | |
| Large Caption Management, LLC Registered adviser | $3,100,800 | 0.40% | 190,000 | Put | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $3,033,365 | 0.39% | 185,868 | Shares | 2026-08-14 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $2,369,174 | 0.30% | 145,170 | Shares | 2026-08-07 | |
| Small Bullseye Asset Management LLC Registered adviser | $2,358,435 | 0.30% | 144,512 | Shares | 2026-08-12 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser | $2,172,861 | 0.28% | 133,141 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $2,150,633 | 0.27% | 131,779 | Shares | 2026-08-13 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $2,144,676 | 0.27% | 131,414 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $2,136,497 | 0.27% | 130,913 | Shares | 2026-08-13 | |
| Mid Cinctive Capital Management LP Registered adviser | $2,015,797 | 0.26% | 123,517 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $1,986,402 | 0.25% | 121,716 | Shares | 2026-08-06 | |
| Mega Bank of New York Mellon Corp Bank | $1,967,684 | 0.25% | 120,569 | Shares | 2026-08-06 | |
| Large Squarepoint Ops LLC Registered adviser | $1,927,848 | 0.25% | 118,128 | Shares | 2026-08-14 | |
| Large Balyasny Asset Management L.P. Registered adviser | $1,637,939 | 0.21% | 100,364 | Shares | 2026-08-14 | |
| Small NANO CAP NEW MILLENNIUM GROWTH FUND L P | $1,632,000 | 0.21% | 100,000 | Shares | 2026-08-14 | |
| Large Caption Management, LLC Registered adviser | $1,632,000 | 0.21% | 100,000 | Call | 2026-08-14 | |
| Small Stonepine Capital Management, LLC Registered adviser | $1,632,000 | 0.21% | 100,000 | Call | 2026-08-17 | |
| Mega JPMORGAN CHASE & CO Bank | $1,562,328 | 0.20% | 95,731 | Shares | 2026-08-12 | |
| Mid Legato Capital Management LLC Registered adviser | $1,491,011 | 0.19% | 91,361 | Shares | 2026-08-06 | |
| Mega CITIGROUP INC Bank | $1,473,760 | 0.19% | 90,304 | Shares | 2026-08-03 | |
| Mega Swiss National Bank | $1,374,144 | 0.18% | 84,200 | Shares | 2026-08-11 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $1,249,197 | 0.16% | 76,544 | Shares | 2026-08-04 | |
| Large Caption Management, LLC Registered adviser | $1,224,000 | 0.16% | 75,000 | Shares | 2026-08-14 | |
| Large Trexquant Investment LP Registered adviser | $1,154,868 | 0.15% | 70,764 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $1,081,281 | 0.14% | 66,255 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $1,057,421 | 0.14% | 64,793 | Shares | 2026-08-14 | |
| Small Palumbo Wealth Management LLC Registered adviser | $1,030,869 | 0.13% | 63,166 | Shares | 2026-08-12 | |
| Mega Invesco Ltd. Adviser | $1,015,689 | 0.13% | 62,236 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $974,890 | 0.12% | 59,736 | Shares | 2026-08-13 | |
| Mid Y-Intercept (Hong Kong) Ltd Exempt adviser | $963,782 | 0.12% | 51,265 | Shares | 2026-10-16 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $879,223 | 0.11% | 53,874 | Shares | 2026-08-12 | |
| Large Quantinno Capital Management LP Registered adviser | $875,486 | 0.11% | 53,645 | Shares | 2026-08-13 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $866,167 | 0.11% | 53,074 | Shares | 2026-08-06 | |
| Mid ADAR1 Capital Management, LLC Registered adviser | $734,400 | 0.09% | 45,000 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $733,502 | 0.09% | 44,945 | Shares | 2026-08-07 | |
| Mid Sterling Capital Management LLC Registered adviser | $732,686 | 0.09% | 44,895 | Shares | 2026-07-28 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $726,941 | 0.09% | 44,543 | Shares | 2026-08-24 | |
| Mid LVW Advisors, LLC Registered adviser | $721,149 | 0.09% | 38,359 | Shares | 2026-10-19 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $719,712 | 0.09% | 44,100 | Shares | 2026-08-13 | |
| Large Corient Private Wealth LLC Registered adviser | $717,198 | 0.09% | 43,946 | Shares | 2026-08-27 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $686,549 | 0.09% | 42,068 | Shares | 2026-08-19 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $664,860 | 0.08% | 40,739 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $654,954 | 0.08% | 40,132 | Shares | 2026-08-14 | |
| Mid Perpetual Ltd Adviser | $637,056 | 0.08% | 33,886 | Shares | 2026-10-13 | |
| Small Hilton Head Capital Partners, LLC | $620,470 | 0.08% | 38,019 | Shares | 2026-07-27 | |
| Large D.A. DAVIDSON & CO. | $600,184 | 0.08% | 36,776 | Shares | 2026-07-24 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $593,232 | 0.08% | 36,350 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $563,040 | 0.07% | 34,500 | Call | 2026-09-02 | |
| Mega FRANKLIN RESOURCES INC Adviser | $557,963 | 0.07% | 34,189 | Shares | 2026-08-13 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $536,128 | 0.07% | 32,851 | Shares | 2026-08-12 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $514,324 | 0.07% | 31,515 | Shares | 2026-08-13 | |
| Mid OP Asset Management Ltd | $505,626 | 0.06% | 30,982 | Shares | 2026-07-28 | |
| Mid Penn Capital Management Company, LLC Registered adviser | $494,332 | 0.06% | 30,290 | Shares | 2026-07-30 | |
| Mid Engineers Gate Manager LP | $479,481 | 0.06% | 29,380 | Shares | 2026-08-14 | |
| Mid Magnetar Financial LLC Registered adviser | $452,716 | 0.06% | 27,740 | Shares | 2026-08-14 | |
| Mid Diversified Trust Co | $450,595 | 0.06% | 27,610 | Shares | 2026-07-17 | |
| Mid ALLSTATE CORP Insurer | $449,224 | 0.06% | 27,526 | Shares | 2026-08-13 | |
| Large MetLife Investment Management, LLC Registered adviser | $421,284 | 0.05% | 25,814 | Shares | 2026-08-14 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $418,608 | 0.05% | 25,650 | Shares | 2026-08-13 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $402,418 | 0.05% | 24,658 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $396,183 | 0.05% | 24,276 | Shares | 2026-08-14 | |
| Large HRT FINANCIAL LP | $368,472 | 0.05% | 22,578 | Shares | 2026-08-14 |
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