BY
Byline Bancorp, Inc. · Financial Services · Banks - Regional
Momentum inputs (comparable managers):
holder breadth +7.1% ·
share flow +28.3% ·
net new positions +6.7%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 82 | +6 | 18.94M | $712.74M | +9 | −3 |
| Q1 2026 | 79 | +4 | 19.42M | $612.93M | +6 | −2 |
| Q4 2025 | 74 | -1 | 19.47M | $567.67M | — | −1 |
| Q3 2025 | 19 | +1 | 11.63M | $322.58M | +1 | — |
| Q2 2025 | 15 | +1 | 9.88M | $264.00M | +2 | −1 |
| Q1 2025 | 11 | +1 | 2.50M | $65.49M | +2 | −1 |
| Q4 2024 | 10 | -1 | 2.45M | $70.99M | +1 | −2 |
| Q3 2024 | 10 | -1 | 1.58M | $42.30M | — | −1 |
| Q2 2024 | 11 | — | 1.28M | $30.42M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 2.34M | — | $62.50M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 1.82M | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 1.82M | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | The Vanguard Group ✦ (passive) | 1.82M | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 1.82M | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 1.82M | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | Wellington Management ✦ | 1.72M | +298.8% | $46.08M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | Wellington Management ✦ | 1.72M | +298.8% | $46.08M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | Wellington Management ✦ | 1.72M | +298.8% | $46.08M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | Fidelity (FMR) ✦ | 1.04M | — | $27.80M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Fidelity (FMR) ✦ | 1.04M | — | $27.80M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Fidelity (FMR) ✦ | 1.04M | — | $27.80M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 1.04M | — | $27.80M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | State Street Global Advisors ✦ (passive) | 829.69K | +1.7% | $22.18M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Geode Capital Management ✦ (passive) | 617.36K | -5.8% | $16.50M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 26 | Geode Capital Management ✦ (passive) | 617.36K | -5.8% | $16.50M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 27 | Millennium Management ✦ | 554.25K | +358.1% | $14.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | Two Sigma Investments ✦ | 225.69K | +150.6% | $6.03M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Citadel Advisors ✦ | 206.75K | New | $5.53M | 0.0% | New | 1 | SEC ↗ |
| 30 | Citadel Advisors ✦ | 206.75K | New | $5.53M | 0.0% | New | 1 | SEC ↗ |
| 31 | AQR Capital Management ✦ | 165.26K | +19.8% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 32 | AQR Capital Management ✦ | 165.26K | +19.8% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | AQR Capital Management ✦ | 165.26K | +19.8% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 34 | AQR Capital Management ✦ | 165.26K | +19.8% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 35 | AQR Capital Management ✦ | 165.26K | +19.8% | $4.42M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 36 | Renaissance Technologies ✦ | 128.30K | -0.1% | $3.43M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 37 | Arrowstreet Capital ✦ | 104.88K | +21.1% | $2.80M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 38 | D. E. Shaw & Co. ✦ | 63.38K | +274.4% | $1.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Marshall Wace ✦ | 46.75K | New | $1.25M | 0.0% | New | 1 | SEC ↗ |
| 40 | Marshall Wace ✦ | 46.75K | New | $1.25M | 0.0% | New | 1 | SEC ↗ |
| 41 | Marshall Wace ✦ | 46.75K | New | $1.25M | 0.0% | New | 1 | SEC ↗ |
| 42 | T. Rowe Price ✦ | 13.58K | -1.0% | $363,000 | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Citadel Advisors | $5.53M | 0.0% |
| Citadel Advisors | $5.53M | 0.0% |
| Marshall Wace | $1.25M | 0.0% |
| Marshall Wace | $1.25M | 0.0% |
| Marshall Wace | $1.25M | 0.0% |
Exited
| Point72 Asset Management | $140,246 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 186 holders, 24.57M shares, $750.07M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Director · 100 sh @ 38.30 · $3,830
Director · 300 sh @ 38.40 · $11,518
Open-market sales (S)
Officer, Director · 19.75K sh · $774,307
Officer · 2.42K sh · $94,419
Director, 10% owner · 300.00K sh · $11.73M
10% owner · 300.00K sh · $11.73M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology