BY Byline Bancorp, Inc.
Byline Bancorp, Inc. (BY) Institutional Ownership
What the institutions did with BY 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. | 3.5M | 14.1% |
| DIMENSIONAL FUND ADVISORS LP | 2.4M | 9.7% |
| T. Rowe Price Investment Management, Inc. | 1.5M | 6.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | 4.8% |
| STATE STREET CORP | 1.1M | 4.4% |
| AMERICAN CENTURY COMPANIES INC | 1.0M | 4.0% |
| Boston Partners | 883.7K | 3.5% |
| FEDERATED HERMES, INC. | 857.8K | 3.4% |
| AQR CAPITAL MANAGEMENT LLC | 813.9K | 3.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 810.2K | 3.2% |
| JPMORGAN CHASE & CO | 507.7K | 2.0% |
| Ararat Capital Management LP | 490.6K | 2.0% |
| WELLINGTON MANAGEMENT GROUP LLP | 488.5K | 2.0% |
| Nuveen, LLC | 437.3K | 1.8% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 424.3K | 1.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 362.7K | 1.5% |
| TWO SIGMA INVESTMENTS, LP | 350.1K | 1.4% |
| MORGAN STANLEY | 301.1K | 1.2% |
| NORTHERN TRUST CORP | 295.9K | 1.2% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 269.1K | 1.1% |
| MILLENNIUM MANAGEMENT LLC | 250.6K | 1.0% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 245.3K | 1.0% |
| ENDEAVOUR CAPITAL ADVISORS INC | 238.7K | 1.0% |
| Qube Research & Technologies Ltd | 219.2K | 0.9% |
| Empowered Funds, LLC | 213.3K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | Increased | 614.7K | 1.5M | +880.9K |
| Aristotle Capital Boston, LLC | Sold Out | 674.8K | 0 | -674.8K |
| FMR LLC | Reduced | 826.1K | 182.4K | -643.7K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 1.0M | 488.5K | -535.5K |
| FEDERATED HERMES, INC. | Increased | 624.4K | 857.8K | +233.4K |
| Assenagon Asset Management S.A. | Sold Out | 227.3K | 0 | -227.3K |
| BlackRock, Inc. | Increased | 3.3M | 3.5M | +216.0K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 72.2K | 245.3K | +173.1K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 665.4K | 813.9K | +148.5K |
| TWO SIGMA INVESTMENTS, LP | Increased | 207.0K | 350.1K | +143.1K |
| Ararat Capital Management LP | Reduced | 623.8K | 490.6K | -133.2K |
| SEI INVESTMENTS CO | Sold Out | 129.6K | 0 | -129.6K |
| Qube Research & Technologies Ltd | Reduced | 341.5K | 219.2K | -122.4K |
| AMERICAN CENTURY COMPANIES INC | Increased | 905.2K | 1.0M | +104.8K |
| MALTESE CAPITAL MANAGEMENT LLC | Reduced | 220.6K | 130.0K | -90.6K |
| GOLDMAN SACHS GROUP INC | Reduced | 299.4K | 212.6K | -86.9K |
| RENAISSANCE TECHNOLOGIES LLC | New | 0 | 80.6K | +80.6K |
| Thrivent Financial for Lutherans | Increased | 89.2K | 157.1K | +67.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 1.3M | 1.2M | -67.0K |
| UBS Group AG | Reduced | 158.4K | 96.7K | -61.7K |
| STATE STREET CORP | Increased | 1.0M | 1.1M | +58.2K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 2.4M | 2.4M | +58.2K |
| ENDEAVOUR CAPITAL ADVISORS INC | Increased | 180.6K | 238.7K | +58.0K |
| TUDOR INVESTMENT CORP ET AL | Reduced | 120.4K | 68.3K | -52.1K |
| ALGERT GLOBAL LLC | New | 0 | 51.6K | +51.6K |
| JPMORGAN CHASE & CO | Increased | 459.4K | 507.7K | +48.2K |
| Point72 Asset Management, L.P. | Increased | 47.9K | 90.3K | +42.4K |
| Man Group plc | Increased | 50.6K | 88.8K | +38.2K |
| FIRST TRUST ADVISORS LP | Increased | 86.5K | 123.8K | +37.3K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 287.7K | 250.6K | -37.1K |
| Boston Partners | Reduced | 918.4K | 883.7K | -34.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 50.2K | 18.1K | -32.1K |
| NORTHERN TRUST CORP | Increased | 266.4K | 295.9K | +29.5K |
| Campbell & CO Investment Adviser LLC | Increased | 22.1K | 51.5K | +29.4K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 335.8K | 362.7K | +26.8K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 87.5K | 61.0K | -26.5K |
| Russell Investments Group, Ltd. | Increased | 4.8K | 28.2K | +23.4K |
| Cambridge Investment Research Advisors, Inc. | Increased | 23.5K | 46.9K | +23.4K |
| Y-Intercept (Hong Kong) Ltd | Sold Out | 23.3K | 0 | -23.3K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 788.0K | 810.2K | +22.2K |
| ACADIAN ASSET MANAGEMENT LLC | New | 0 | 21.0K | +21.0K |
| Creative Planning | Increased | 143.2K | 163.5K | +20.3K |
| D. E. Shaw & Co., Inc. | New | 0 | 19.8K | +19.8K |
| XTX Topco Ltd | Increased | 12.5K | 32.0K | +19.5K |
| MORGAN STANLEY | Increased | 282.0K | 301.1K | +19.1K |
| CITADEL ADVISORS LLC | Increased | 55.0K | 73.9K | +18.9K |
| Quantbot Technologies LP | New | 0 | 18.3K | +18.3K |
| DENALI ADVISORS LLC | Increased | 167.4K | 185.5K | +18.1K |
| HSBC HOLDINGS PLC | Reduced | 44.8K | 26.8K | -18.1K |
| Engineers Gate Manager LP | Reduced | 31.3K | 13.8K | -17.5K |
| Brevan Howard Capital Management LP | New | 0 | 17.2K | +17.2K |
| Sequoia Financial Advisors, LLC | New | 0 | 16.7K | +16.7K |
| BANK OF AMERICA CORP /DE/ | Increased | 135.8K | 151.4K | +15.6K |
| Mitsubishi UFJ Trust & Banking Corp | New | 0 | 15.3K | +15.3K |
| BANC FUNDS CO LLC | Reduced | 34.2K | 19.7K | -14.5K |
| Aquatic Capital Management LLC | Increased | 1.7K | 15.5K | +13.8K |
| WELLS FARGO & COMPANY/MN | Increased | 43.6K | 56.9K | +13.3K |
| Nuveen, LLC | Increased | 424.9K | 437.3K | +12.4K |
| Schonfeld Strategic Advisors LLC | New | 0 | 12.0K | +12.0K |
| DARK FOREST CAPITAL MANAGEMENT LP | Increased | 12.5K | 23.6K | +11.1K |
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.