CABA
Cabaletta Bio, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +25.0% ·
share flow +21.4% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 67 | +17 | 94.18M | $292.87M | +24 | −6 |
| Q1 2026 | 49 | +1 | 47.68M | $128.08M | +7 | −6 |
| Q4 2025 | 47 | +1 | 39.89M | $87.37M | +1 | — |
| Q3 2025 | 15 | -1 | 24.60M | $57.56M | — | −1 |
| Q2 2025 | 13 | 0 | 19.37M | $29.44M | — | — |
| Q1 2025 | 10 | -1 | 6.81M | $9.44M | +2 | −3 |
| Q4 2024 | 11 | 0 | 9.36M | $21.24M | +1 | −1 |
| Q3 2024 | 10 | +2 | 7.88M | $37.20M | +2 | — |
| Q2 2024 | 8 | — | 6.49M | $48.56M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners ✦ | 3.04M | 0.0% | $14.33M | 0.0% | Held | 2 | SEC ↗ |
| 2 | Millennium Management ✦ | 1.63M | +133.3% | $7.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.09M | +12.8% | $5.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.09M | +12.8% | $5.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Point72 Asset Management ✦ | 667.27K | New | $3.15M | 0.0% | New | 1 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 552.79K | -5.1% | $2.61M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 552.79K | -5.1% | $2.61M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Two Sigma Investments ✦ | 420.48K | +6.3% | $1.98M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | Marshall Wace ✦ | 283.81K | -14.1% | $1.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Wellington Management ✦ | 157.05K | -1.1% | $741,281 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | Wellington Management ✦ | 157.05K | -1.1% | $741,281 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | D. E. Shaw & Co. ✦ | 33.96K | New | $160,305 | 0.0% | New | 1 | SEC ↗ |
| 13 | D. E. Shaw & Co. ✦ | 33.96K | New | $160,305 | 0.0% | New | 1 | SEC ↗ |
| 14 | Citadel Advisors ✦ | 4.51K | -98.6% | $21,292 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $3.15M | 0.0% |
| D. E. Shaw & Co. | $160,305 | 0.0% |
| D. E. Shaw & Co. | $160,305 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 107 holders, 84.67M shares, $194.86M 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.