STLN STARLING ONCOLO
STARLING ONCOLO (STLN) Institutional Ownership
What the institutions did with STLN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 4.7M | 10.7% |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 4.6M | 10.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.3M | 7.4% |
| JOSH ARNOLD INVESTMENT CONSULTANT, LLC | 2.5M | 5.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9M | 4.3% |
| GOLDMAN SACHS GROUP INC | 1.7M | 3.9% |
| WEXFORD CAPITAL LP | 1.7M | 3.9% |
| LMR Partners LLP | 1.6M | 3.7% |
| STATE STREET CORP | 1.6M | 3.5% |
| Nuveen, LLC | 1.4M | 3.2% |
| RENAISSANCE TECHNOLOGIES LLC | 1.4M | 3.1% |
| CenterBook Partners LP | 1.2M | 2.8% |
| MARSHALL WACE, LLP | 1.2M | 2.8% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.0M | 2.3% |
| CITADEL ADVISORS LLC | 894.1K | 2.0% |
| JANE STREET GROUP, LLC | 852.2K | 1.9% |
| BRC Group Holdings, Inc. | 742.6K | 1.7% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 710.9K | 1.6% |
| TWO SIGMA INVESTMENTS, LP | 668.8K | 1.5% |
| NORTHERN TRUST CORP | 591.5K | 1.3% |
| ACADIAN ASSET MANAGEMENT LLC | 567.0K | 1.3% |
| VANGUARD FIDUCIARY TRUST CO | 502.0K | 1.1% |
| FourWorld Capital Management LLC | 499.2K | 1.1% |
| Manatuck Hill Partners, LLC | 450.0K | 1.0% |
| Walleye Capital LLC | 445.8K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Kanen Wealth Management LLC | Sold Out | 2.8M | 0 | -2.8M |
| Balyasny Asset Management L.P. | Sold Out | 1.8M | 0 | -1.8M |
| LMR Partners LLP | New | 0 | 1.6M | +1.6M |
| Nuveen, LLC | Increased | 95.3K | 1.4M | +1.3M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | Increased | 3.4M | 4.6M | +1.3M |
| MARSHALL WACE, LLP | Increased | 342.3K | 1.2M | +880.2K |
| Ensign Peak Advisors, Inc | Sold Out | 626.9K | 0 | -626.9K |
| ACADIAN ASSET MANAGEMENT LLC | New | 0 | 567.0K | +567.0K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 902.8K | 1.4M | +463.1K |
| Manatuck Hill Partners, LLC | New | 0 | 450.0K | +450.0K |
| Walleye Capital LLC | New | 0 | 445.8K | +445.8K |
| JANE STREET GROUP, LLC | Increased | 424.9K | 852.2K | +427.3K |
| Inspire Investing, LLC | New | 0 | 424.0K | +424.0K |
| WOLVERINE ASSET MANAGEMENT LLC | New | 0 | 418.2K | +418.2K |
| UBS Group AG | Reduced | 574.7K | 170.4K | -404.3K |
| GOLDMAN SACHS GROUP INC | Increased | 1.4M | 1.7M | +383.4K |
| TWO SIGMA INVESTMENTS, LP | Increased | 307.8K | 668.8K | +361.1K |
| BlackRock, Inc. | Increased | 4.4M | 4.7M | +333.2K |
| BANK OF AMERICA CORP /DE/ | Increased | 63.4K | 392.0K | +328.6K |
| CenterBook Partners LP | Reduced | 1.6M | 1.2M | -326.8K |
| Davidson Kempner Capital Management LP | New | 0 | 318.7K | +318.7K |
| Invesco Ltd. | Increased | 37.2K | 342.2K | +304.9K |
| FORMULA GROWTH LTD | New | 0 | 300.0K | +300.0K |
| Dauntless Investment Group, LLC | Reduced | 462.1K | 163.6K | -298.5K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 419.4K | 710.9K | +291.5K |
| CITADEL ADVISORS LLC | Increased | 608.3K | 894.1K | +285.8K |
| SG Americas Securities, LLC | Increased | 14.1K | 263.1K | +249.0K |
| Centiva Capital, LP | Sold Out | 224.2K | 0 | -224.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 3.5M | 3.3M | -211.3K |
| TIFF ADVISORY SERVICES, LLC | Sold Out | 195.5K | 0 | -195.5K |
| Informed Momentum Co LLC | New | 0 | 188.5K | +188.5K |
| TORONTO DOMINION BANK | New | 0 | 187.5K | +187.5K |
| BRC Group Holdings, Inc. | Reduced | 929.7K | 742.6K | -187.1K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 862.8K | 1.0M | +144.2K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.8M | 1.9M | +142.2K |
| Jump Financial, LLC | Reduced | 116.4K | 12.3K | -104.1K |
| Panoramic Capital, LLC | New | 0 | 100.0K | +100.0K |
| Oasis Management Co Ltd. | New | 0 | 100.0K | +100.0K |
| GSA CAPITAL PARTNERS LLP | New | 0 | 98.7K | +98.7K |
| BOOTHBAY FUND MANAGEMENT, LLC | Increased | 137.8K | 233.4K | +95.6K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 92.9K | 0 | -92.9K |
| STATE STREET CORP | Increased | 1.5M | 1.6M | +91.5K |
| XTX Topco Ltd | Sold Out | 90.3K | 0 | -90.3K |
| Man Group plc | New | 0 | 88.8K | +88.8K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | New | 0 | 87.5K | +87.5K |
| WHITE PINE CAPITAL LLC | New | 0 | 85.6K | +85.6K |
| Creative Planning | Increased | 26.2K | 109.9K | +83.7K |
| Lee Financial Co | Sold Out | 81.4K | 0 | -81.4K |
| Aquatic Capital Management LLC | Sold Out | 78.5K | 0 | -78.5K |
| RHUMBLINE ADVISERS | Sold Out | 77.8K | 0 | -77.8K |
| WealthShield Partners, LLC | Sold Out | 70.2K | 0 | -70.2K |
| Allspring Global Investments Holdings, LLC | New | 0 | 51.3K | +51.3K |
| Engineers Gate Manager LP | Reduced | 62.8K | 12.3K | -50.5K |
| ADAR1 Capital Management, LLC | Sold Out | 50.0K | 0 | -50.0K |
| Squarepoint Ops LLC | Increased | 23.8K | 72.9K | +49.0K |
| Private Advisor Group, LLC | Reduced | 94.2K | 45.9K | -48.3K |
| JPMORGAN CHASE & CO | Increased | 370.2K | 409.3K | +39.2K |
| Cetera Investment Advisers | Reduced | 128.2K | 89.4K | -38.8K |
| WELLS FARGO & COMPANY/MN | Increased | 40.4K | 78.5K | +38.1K |
| MORGAN STANLEY | Reduced | 171.9K | 135.1K | -36.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.