InvestorLens

CABA — CABALETTA BIO INC

Public company

Sign in to save3 tracked investors reported this
For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying CABA?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence
67
Institutional Conviction
Strong distribution · 1 buying vs 2 selling last quarter
24
Macro Tailwind
Macro conditions are mixed for this sector
55
Why? — Evidence & Confidence ▾

Of 3 tracked investors who changed their CABA position last quarter, 1 bought and 2 sold (33% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 55/100 in a Squeeze regime).

Supporting evidence
  • +1 tracked investor added or increased positions last quarter (Ken Griffin)
  • +3 tracked investors reported holding CABA at their latest filing
  • +Macro Health is 55/100 in a Squeeze regime — historically acceptable for this sectorsource
Contradicting evidence — always shown
  • −2 tracked investors reduced or exited last quarter (1 reduced, 1 sold out)
  • −13F data is disclosed up to 45 days after quarter end — positions may have changed since
Know the limits
  • · 13F disclosure lag (up to 45 days)
  • · Tracked investors are a sample, not the whole market
  • · Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 8/20/2026.

About CABALETTA BIO INC (CABA)

CABALETTA BIO INC (CABA) appears in the most recent 13F filings of 3 tracked institutional investors. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $16M. Across recent filings, tracked investors recorded 7 new positions, 7 increased, 4 reduced, and 5 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in CABA

61
/100
Institutional Accumulation
Added / Increased14
Reduced4
Exited5
BearishBullish
Crowded Trade Score™

How many top investors track CABA

20
/100
Emerging Interest
3investors

A small number of top investors own this.

UndiscoveredCrowded
151015+

CABA Ownership Composition

How CABALETTA BIO INC is held across tracked investor types, based on reported 13F positions.

Dominant Type
Multi-Strategy / Quant
98% of tracked value
Institutions
3
tracked investors
Total Reported
$19.8M
combined 13F value
Types2
  • Multi-Strategy / Quant97.6%
  • Macro2.4%
Multi-Strategy / Quant(2)
97.6%
Macro(1)
2.4%

Tracked investors currently reporting CABA

2 tracked investors have since exited this position — listed separately below.

  • Izzy EnglanderJun 30, 2026
    Millennium Management
    Shares
    2.1M
    Value
    $6.4M
    % Portfolio
    0.00%
  • Ken GriffinJun 30, 2026
    Citadel Advisors
    Shares
    4.1M
    Value
    $12.9M
    % Portfolio
    0.00%
  • Paul Tudor JonesJun 30, 2026
    Tudor Investment Corp
    Shares
    150K
    Value
    $466.5K
    % Portfolio
    0.00%

Previously held CABA

These investors reported CABA in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.

InvestorFirmLast reported sharesValue thenLast held
Stanley DruckenmillerDuquesne Family Office417K$7.1MMar 31, 2024
Steve CohenPoint72 Asset Management246.6K$663.4KMar 31, 2026

Recent activity

Frequently asked questions

How many institutional investors hold CABA?
3 tracked institutional investors disclosed a position in CABA (CABALETTA BIO INC) in their most recent 13F filing.
Who is the largest institutional holder of CABA?
Izzy Englander, Millennium Management, holds the largest disclosed position in CABA, valued at $16M.
Did institutional ownership of CABA increase or decrease?
Across recent 13F filings, tracked investors recorded 7 new positions, 7 increased, 4 reduced, and 5 fully exited CABA.
Where does this CABA ownership data come from?
SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.