Security record · archived quarter
OSUR
name pending profile ingest
64Tracked holders
+5Δ holders
30.89MShares held
$92.54MReported value
+7New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth +8.5% ·
share flow -5.9% ·
net new positions +7.8%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
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 | 66 | +5 | 30.45M | $135.70M | +8 | −4 |
| Q1 2026 | 64 | +5 | 30.89M | $92.54M | +7 | −2 |
| Q4 2025 | 59 | -1 | 33.90M | $82.04M | n/a | −1 |
| Q3 2025 | 15 | -1 | 25.02M | $80.33M | n/a | −1 |
| Q2 2025 | 13 | 0 | 20.32M | $60.97M | n/a | n/a |
| Q1 2025 | 10 | -1 | 11.46M | $38.61M | n/a | −1 |
| Q4 2024 | 11 | +2 | 12.43M | $44.86M | +2 | n/a |
| Q3 2024 | 8 | -3 | 9.07M | $38.71M | n/a | −3 |
| Q2 2024 | 11 | n/a | 9.46M | $40.30M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 6.52M | +1.1% | $19.55M | 0.0% | ▲ Add | 4 | SEC ↗ ×7 |
| 2 | Neuberger Berman Group LLC | 4.36M | +9.5% | $13.07M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 3 | Vanguard Capital Management Llc | 3.03M | n/a | $9.09M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Dimensional Fund Advisors Lp | 2.82M | -13.4% | $8.46M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 5 | Renaissance Technologies ✦ | 2.08M | -2.9% | $6.25M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 1.82M | +3.9% | $5.46M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 7 | State Street Global Advisors ✦ (passive) | 1.70M | +6.2% | $5.11M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 1.38M | -17.0% | $4.15M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 9 | Wells Fargo & Company/Mn | 899.84K | +2.6% | $2.70M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 10 | Northern Trust Corp | 595.17K | +3.4% | $1.79M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 11 | Charles Schwab Investment… | 585.84K | -5.8% | $1.76M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Sei Investments Co | 417.96K | +126.9% | $1.25M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 13 | Goldman Sachs Group ✦ | 411.53K | +29.8% | $1.23M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 14 | Morgan Stanley ✦ | 373.95K | -29.4% | $1.12M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 15 | JPMorgan Chase ✦ | 360.52K | -9.2% | $1.05M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 16 | AQR Capital Management ✦ | 330.90K | +49.1% | $992,703 | 0.0% | ▲ Add | 8 | SEC ↗ ×6 |
| 17 | UBS Group AG | 243.29K | -64.2% | $729,882 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 18 | Ameriprise Financial Inc | 218.23K | -17.2% | $654,699 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 19 | Bank of New York Mellon Corp | 200.38K | -5.9% | $601,131 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 20 | American Century Companies Inc | 199.92K | -1.5% | $599,772 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | T. Rowe Price ✦ | 195.77K | +6.8% | $588,000 | 0.0% | ▲ Add | 8 | SEC ↗ |
| 22 | Invesco Ltd. | 165.00K | +2.4% | $495,009 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 23 | Nuveen, LLC | 159.36K | +0.6% | $478,077 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 24 | Susquehanna International Group, Llp | 153.61K | +425.8% | $460,830 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Hsbc Holdings Plc | 141.31K | -47.7% | $421,101 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 26 | Bank Of America Corp /De/ | 134.41K | +1.5% | $403,218 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Jane Street Group, Llc | 125.52K | -64.9% | $376,548 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | Simplex Trading, Llc | 118.05K | +4833.2% | $354,153 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 29 | Barclays Plc | 115.17K | -44.8% | $345,516 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 30 | Deutsche Bank Ag\ | 114.59K | +22.2% | $343,776 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 31 | Tudor Investment Corp Et Al | 112.76K | -39.7% | $338,268 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Alliancebernstein L.P. | 124.82K | -4.2% | $302,055 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 33 | Rhumbline Advisers | 84.96K | -6.3% | $254,871 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | Russell Investments Group, Ltd. | 83.70K | +91.8% | $251,094 | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 35 | HighTower Advisors, LLC | 63.26K | +214.1% | $189,792 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Two Sigma Investments ✦ | 56.10K | New | $168,300 | 0.0% | New | 1 | SEC ↗ |
| 37 | Citadel Advisors ✦ | 55.31K | -86.0% | $165,918 | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 38 | State Board Of Administration Of… | 34.34K | 0.0% | $103,014 | 0.0% | Held | 2 | SEC ↗ |
| 39 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 33.70K | +2.4% | $101,094 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | IMC-Chicago, LLC | 23.52K | New | $70,551 | 0.0% | New | 1 | SEC ↗ |
| 41 | Manufacturers Life Insurance… | 21.12K | -22.5% | $63,375 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | LPL Financial LLC | 19.97K | +2.4% | $59,898 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | New York State Common Retirement… | 19.31K | 0.0% | $57,921 | 0.0% | Held | 2 | SEC ↗ |
| 44 | Bnp Paribas Financial Markets | 19.25K | -2.2% | $57,753 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 45 | Millennium Management ✦ | 18.96K | -97.8% | $56,874 | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 46 | Squarepoint Ops LLC | 15.20K | +11.7% | $45,597 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Citigroup Inc | 14.44K | +798.8% | $43,305 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 48 | Voya Investment Management Llc | 14.26K | -6.7% | $42,792 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 49 | Grantham, Mayo, Van Otterloo & Co.… | 12.33K | 0.0% | $36,993 | 0.0% | Held | 2 | SEC ↗ |
| 50 | Osaic Holdings, Inc. | 11.75K | +4.3% | $35,244 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 51 | Prudential Financial Inc | 11.68K | New | $35,031 | 0.0% | New | 1 | SEC ↗ |
| 52 | Fidelity (FMR) ✦ | 10.39K | -4.8% | $31,179 | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 53 | Pnc Financial Services Group, Inc. | 10.11K | -18.5% | $30,342 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 54 | ProShare Advisors LLC | 10.09K | -22.2% | $30,270 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Legal & General Group Plc | 6.75K | 0.0% | $20,250 | 0.0% | Held | 2 | SEC ↗ |
| 56 | Cwm, Llc | 4.77K | +395.2% | $14,322 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | California State Teachers… | 3.84K | -12.0% | $11,520 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | Royal Bank Of Canada | 3.36K | -44.1% | $10,000 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 59 | Rockefeller Capital Management L.P. | 1.72K | -50.6% | $5,148 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 60 | Fifth Third Bancorp | 1.66K | New | $4,983 | 0.0% | New | 1 | SEC ↗ |
| 61 | Optiver Holding B.V. | 708 | -26.6% | $2,124 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | UBS AM, a distinct business unit of… | 270 | New | $810 | 0.0% | New | 1 | SEC ↗ |
| 63 | TD Waterhouse Canada Inc. | 200 | New | $608 | 0.0% | New | 1 | SEC ↗ |
| 64 | Assetmark, Inc | 4 | New | $12 | 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
| Two Sigma Investments | $168,300 | 0.0% |
| IMC-Chicago, LLC | $70,551 | 0.0% |
| Prudential Financial Inc | $35,031 | 0.0% |
| Fifth Third Bancorp | $4,983 | 0.0% |
| UBS AM, a distinct business… | $810 | 0.0% |
| TD Waterhouse Canada Inc. | $608 | 0.0% |
| Assetmark, Inc | $12 | 0.0% |
Exited
| Qube Research & Technologies… | $524,997 | was 0.0% |
| Assenagon Asset Management… | $117,150 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 140 holders, 56.36M shares, $150.50M 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.
Sep 17
SC 13D: Islet Management, LP
0.7% of class · View original SEC filing ↗
Aug 12
SC 13G: GAGNON SECURITIES LLC
Jul 31
SC 13G/A: PRIVATE MANAGEMENT GROUP INC
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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