# CABALETTA BIO INC COM

CABALETTA BIO INC COM is a security (CUSIP 12674W109) tracked across SEC portfolio filings. 117 institutional managers reported $239.5M on Form 13F as of 2026-06-30; 11 registered fund positions totaling $40.5M via N-PORT as of 2026-05-31.

## Summary

- Issuer: CABALETTA BIO INC
- Class: COM
- CUSIP: 12674W109
- Asset category: EC
- 13F holders: 117
- 13F value: $239.5M
- 13F period: 2026-06-30
- N-PORT fund positions: 11
- N-PORT value: $40.5M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 117 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [JENNISON ASSOCIATES LLC](https://search.stillhousedata.com/firm/107959) | NEW YORK, NY | $62.3M | 20,033,730 |
| Bain Capital Life Sciences Investors, LLC | Boston, MA | $26.0M | 9,677,125 |
| [ADAGE CAPITAL PARTNERS GP, L.L.C.](https://search.stillhousedata.com/firm/160679) | Boston, MA | $23.8M | 8,829,758 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $15.9M | 5,903,281 |
| [Cormorant Asset Management, LP](https://search.stillhousedata.com/firm/167820) | BOSTON, MA | $14.8M | 5,500,000 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $9.7M | 4,419,458 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $6.7M | 2,497,917 |
| BlackRock, Inc. | New York, NY | $6.4M | 2,373,003 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $5.9M | 2,179,818 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $5.5M | 2,036,663 |
| [Qube Research & Technologies Ltd](https://search.stillhousedata.com/firm/304552) | LONDON, X0 | $5.2M | 1,934,990 |
| MORGAN STANLEY | NEW YORK, NY | $3.8M | 1,408,152 |
| [Opaleye Management Inc.](https://search.stillhousedata.com/firm/124513) | Boston, MA | $3.7M | 1,380,000 |
| [Woodline Partners LP](https://search.stillhousedata.com/firm/301480) | San Francisco, CA | $3.4M | 1,250,242 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $3.0M | 1,133,245 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [PGIM Jennison Health Sciences Fund](https://search.stillhousedata.com/fund/S000004380) | Prudential Sector Funds, Inc. | $18.8M | 135.04% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $15.6M | 16.88% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $3.0M | 0.36% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $1.6M | 1.50% |
| [PGIM Jennison Blend Fund](https://search.stillhousedata.com/fund/S000004514) | Prudential Jennison Blend Fund, Inc. | $727K | 6.21% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $241K | 0.32% |
| [T. Rowe Price Spectrum Moderate Growth Allocation Fund](https://search.stillhousedata.com/fund/S000002138) | T. ROWE PRICE SPECTRUM FUNDS II, INC. | $178K | 0.41% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $139K | 0.05% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $132K | 0.02% |
| [T. Rowe Price Health Sciences Portfolio](https://search.stillhousedata.com/fund/S000002083) | T. ROWE PRICE EQUITY SERIES, INC. | $120K | 1.81% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $42K | 0.12% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/12674W109.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.