Who owns Cabaletta Bio, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CABA from SEC Form 13F filings across 142 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 142 institutions disclosed 158.2M shares of Cabaletta Bio, Inc. worth $416.9M — about 104.7% of shares outstanding; the largest disclosed holder is JENNISON ASSOCIATES LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
142
13F holders
$416.9M
value, 2026 filers
104.7%
of shares outstanding (158.2M sh)
57
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of CABA's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | JENNISON ASSOCIATES LLC | 20.0M | $62.3M | 0.0% | 13.3% | +123.3% |
| 2 | T. Rowe Price Investment Management, Inc. | 18.9M | $58,686 | 0.0% | 12.5% | +70.3% |
| 3 | Bain Capital Life Sciences Investors, LLC | 17.2M | $53.6M | 3.2% | 11.4% | +78.2% |
| 4 | BlackRock, Inc. | 10.8M | $33.4M | 0.0% | 7.1% | +353.2% |
| 5 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 9.2M | $28.5M | 0.0% | 6.1% | +3.9% |
| 6 | STATE STREET CORP | 7.8M | $24.4M | 0.0% | 5.2% | +1568.0% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 7.2M | $22.5M | 0.0% | 4.8% | +79.4% |
| 8 | Cormorant Asset Management, LP | 5.0M | $15.6M | 0.8% | 3.3% | -9.1% |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | 4.4M | $13,744 | 0.0% | 2.9% | +899.1% |
| 10 | Woodline Partners LP | 4.2M | $13.1M | 0.0% | 2.8% | +235.9% |
| 11 | NORGES BANKNEW | 4.1M | $12.8M | 0.0% | 2.7% | new |
| 12 | Opaleye Management Inc. | 3.9M | $12.0M | 1.1% | 2.6% | +180.0% |
| 13 | CITADEL ADVISORS LLCNEW | 3.5M | $11.0M | 0.0% | 2.3% | new |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 3.5M | $10.8M | 0.0% | 2.3% | +205.3% |
| 15 | FRANKLIN RESOURCES INCNEW | 2.4M | $7.5M | 0.0% | 1.6% | new |
| 16 | GOLDMAN SACHS GROUP INC | 2.2M | $6.9M | 0.0% | 1.5% | +182.4% |
| 17 | MILLENNIUM MANAGEMENT LLC | 2.1M | $6.4M | 0.0% | 1.4% | -65.0% |
| 18 | MARSHALL WACE, LLP | 1.6M | $4.9M | 0.0% | 1% | -28.2% |
| 19 | RENAISSANCE TECHNOLOGIES LLC | 1.5M | $4.8M | 0.0% | 1% | -24.6% |
| 20 | UBS Group AG | 1.5M | $4.6M | 0.0% | 1% | +142.6% |
| 21 | Qube Research & Technologies Ltd | 1.4M | $4.4M | 0.0% | 0.9% | -26.3% |
| 22 | VANGUARD PORTFOLIO MANAGEMENT LLCNEW | 1.4M | $4.4M | 0.0% | 0.9% | new |
| 23 | TWO SIGMA INVESTMENTS, LP | 1.4M | $4.4M | 0.0% | 0.9% | -43.5% |
| 24 | MORGAN STANLEY | 1.3M | $4.2M | 0.0% | 0.9% | -4.4% |
| 25 | SPHERA FUNDS MANAGEMENT LTD.NEW | 1.3M | $4.1M | 0.5% | 0.9% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.