Security record · archived quarter
CABA
Cabaletta Bio, Inc. · Healthcare · Biotechnology
8Tracked holders
—Δ holders
6.49MShares held
$48.56MReported value
+0New positions
−0Exits
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
Ownership over time
| 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 | — | — |
Who holds it · Q2 2024
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners ✦ | 3.04M | — | $22.71M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 970.57K | — | $7.26M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 970.57K | — | $7.26M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Millennium Management ✦ | 698.32K | — | $5.22M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 582.27K | — | $4.36M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 582.27K | — | $4.36M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 395.44K | — | $2.96M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Marshall Wace ✦ | 330.19K | — | $2.47M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 330.19K | — | $2.47M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 319.55K | — | $2.39M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Wellington Management ✦ | 158.81K | — | $1.19M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Wellington Management ✦ | 158.81K | — | $1.19M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Wellington Management ✦ | 158.81K | — | $1.19M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Wellington Management ✦ | 158.81K | — | $1.19M | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
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.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
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: Q2 2024 ·
Methodology ·
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