Security record · archived quarter
CABA
Cabaletta Bio, Inc. · Healthcare · Biotechnology
49Tracked holders
+1Δ holders
47.68MShares held
$128.08MReported value
+7New positions
−6Exits
Momentum inputs (comparable managers):
holder breadth +2.1% ·
share flow +18.4% ·
net new positions +2.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
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 · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Jennison Associates Llc | 8.97M | +0.7% | $24.13M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Adage Capital Partners ✦ | 8.83M | 0.0% | $23.75M | 0.0% | Held | 8 | SEC ↗ |
| 3 | Millennium Management ✦ | 5.90M | +115.7% | $15.88M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 4 | Vanguard Capital Management Llc | 4.03M | — | $10.84M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Two Sigma Investments ✦ | 2.50M | +35.8% | $6.72M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.37M | +1.9% | $6.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.37M | +1.9% | $6.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.37M | +1.9% | $6.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.37M | +1.9% | $6.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.37M | +1.9% | $6.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 2.37M | +1.9% | $6.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | Marshall Wace ✦ | 2.18M | +127.3% | $5.86M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 13 | Marshall Wace ✦ | 2.18M | +127.3% | $5.86M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 14 | Renaissance Technologies ✦ | 2.04M | +33.8% | $5.48M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 15 | Qube Research & Technologies Ltd | 1.93M | +484.2% | $5.21M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | Morgan Stanley ✦ | 1.41M | +4.8% | $3.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | Morgan Stanley ✦ | 1.41M | +4.8% | $3.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 18 | Morgan Stanley ✦ | 1.41M | +4.8% | $3.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 19 | Morgan Stanley ✦ | 1.41M | +4.8% | $3.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | Geode Capital Management ✦ (passive) | 1.13M | +4.4% | $3.05M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 21 | Geode Capital Management ✦ (passive) | 1.13M | +4.4% | $3.05M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 22 | Goldman Sachs Group ✦ | 783.22K | +81.9% | $2.11M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | Goldman Sachs Group ✦ | 783.22K | +81.9% | $2.11M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 24 | Dimensional Fund Advisors Lp | 740.65K | +63.9% | $1.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Dimensional Fund Advisors Lp | 740.65K | +63.9% | $1.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 26 | Dimensional Fund Advisors Lp | 740.65K | +63.9% | $1.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Dimensional Fund Advisors Lp | 740.65K | +63.9% | $1.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | Schroder Investment Management Group | 756.64K | — | $1.87M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | UBS Group AG | 606.66K | +46.0% | $1.63M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 30 | UBS Group AG | 606.66K | +46.0% | $1.63M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 31 | UBS Group AG | 606.66K | +46.0% | $1.63M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 32 | State Street Global Advisors ✦ (passive) | 469.98K | +10.5% | $1.26M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 33 | T. Rowe Price ✦ | 442.28K | -59.6% | $1.19M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 34 | T. Rowe Price ✦ | 442.28K | -59.6% | $1.19M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 35 | Bank Of America Corp /De/ | 269.26K | +1770.9% | $724,301 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Bank Of America Corp /De/ | 269.26K | +1770.9% | $724,301 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Jane Street Group, Llc | 248.59K | -62.5% | $668,718 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | Wellington Management ✦ | 247.66K | New | $666,202 | 0.0% | New | 1 | SEC ↗ |
| 39 | Wellington Management ✦ | 247.66K | New | $666,202 | 0.0% | New | 1 | SEC ↗ |
| 40 | Wellington Management ✦ | 247.66K | New | $666,202 | 0.0% | New | 1 | SEC ↗ |
| 41 | Point72 Asset Management ✦ | 246.62K | +335.4% | $663,394 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | Northern Trust Corp | 238.44K | 0.0% | $641,409 | 0.0% | Held | 2 | SEC ↗ |
| 43 | Invesco Ltd. | 192.38K | +1.7% | $517,510 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | D. E. Shaw & Co. ✦ | 189.41K | New | $509,518 | 0.0% | New | 1 | SEC ↗ |
| 45 | D. E. Shaw & Co. ✦ | 189.41K | New | $509,518 | 0.0% | New | 1 | SEC ↗ |
| 46 | Squarepoint Ops LLC | 144.68K | -3.0% | $389,192 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | Hrt Financial Lp | 131.60K | New | $353,000 | 0.0% | New | 1 | SEC ↗ |
| 48 | Hrt Financial Lp | 131.60K | New | $353,000 | 0.0% | New | 1 | SEC ↗ |
| 49 | American Century Companies Inc | 108.32K | +84.3% | $291,378 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Barclays Plc | 97.79K | -55.7% | $263,060 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 51 | Barclays Plc | 97.79K | -55.7% | $263,060 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 52 | Barclays Plc | 97.79K | -55.7% | $263,060 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 53 | Nomura Holdings Inc | 95.51K | New | $256,927 | 0.0% | New | 1 | SEC ↗ |
| 54 | LPL Financial LLC | 69.58K | +63.3% | $187,157 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | Td Asset Management Inc | 66.92K | -24.5% | $180,026 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Bank of New York Mellon Corp | 54.30K | +0.5% | $146,066 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | Bank of New York Mellon Corp | 54.30K | +0.5% | $146,066 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | Charles Schwab Investment… | 50.82K | 0.0% | $136,717 | 0.0% | Held | 2 | SEC ↗ |
| 59 | Citigroup Inc | 27.47K | -62.8% | $73,902 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 60 | Mercer Global Advisors Inc /Adv | 26.51K | 0.0% | $71,312 | 0.0% | Held | 2 | SEC ↗ |
| 61 | Raymond James Financial Inc | 19.77K | New | $53,179 | 0.0% | New | 1 | SEC ↗ |
| 62 | Raymond James Financial Inc | 19.77K | New | $53,179 | 0.0% | New | 1 | SEC ↗ |
| 63 | Fidelity (FMR) ✦ | 12.99K | -0.4% | $34,946 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 64 | Balyasny Asset Management L.P. | 11.15K | -78.4% | $30,004 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | JPMorgan Chase ✦ | 7.21K | -26.5% | $17,800 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 66 | JPMorgan Chase ✦ | 7.21K | -26.5% | $17,800 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 67 | JPMorgan Chase ✦ | 7.21K | -26.5% | $17,800 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 68 | Wells Fargo & Company/Mn | 6.00K | +200.0% | $16,140 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Mirae Asset Global Investments Co.… | 5.02K | +7.3% | $13,506 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Pnc Financial Services Group, Inc. | 4.60K | 0.0% | $12,374 | 0.0% | Held | 2 | SEC ↗ |
| 71 | Osaic Holdings, Inc. | 2.91K | New | $7,820 | 0.0% | New | 1 | SEC ↗ |
| 72 | Rockefeller Capital Management L.P. | 2.00K | New | $5,380 | 0.0% | New | 1 | SEC ↗ |
| 73 | Bnp Paribas Financial Markets | 1.57K | -4.3% | $4,221 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Russell Investments Group, Ltd. | 939 | 0.0% | $2,526 | 0.0% | Held | 2 | SEC ↗ |
| 75 | Royal Bank Of Canada | 781 | +535.0% | $2,000 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 76 | Royal Bank Of Canada | 781 | +535.0% | $2,000 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Jones Financial Companies Lllp | 653 | -96.8% | $1,750 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Northwestern Mutual Wealth… | 60 | 0.0% | $161 | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Wellington Management | $666,202 | 0.0% |
| Wellington Management | $666,202 | 0.0% |
| Wellington Management | $666,202 | 0.0% |
| D. E. Shaw & Co. | $509,518 | 0.0% |
| D. E. Shaw & Co. | $509,518 | 0.0% |
| Hrt Financial Lp | $353,000 | 0.0% |
| Hrt Financial Lp | $353,000 | 0.0% |
| Nomura Holdings Inc | $256,927 | 0.0% |
| Raymond James Financial Inc | $53,179 | 0.0% |
| Raymond James Financial Inc | $53,179 | 0.0% |
| Osaic Holdings, Inc. | $7,820 | 0.0% |
| Rockefeller Capital… | $5,380 | 0.0% |
Exited
| Ensign Peak Advisors, Inc | $1.20M | was 0.0% |
| Susquehanna International… | $302,835 | was 0.0% |
| Citadel Advisors | $73,369 | was 0.0% |
| Manufacturers Life Insurance… | $28,043 | was 0.0% |
| Canada Pension Plan… | $7,665 | was 0.0% |
| Optiver Holding B.V. | $53 | was 0.0% |
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: Q1 2026 ·
Methodology ·
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