13F

Stock

Cabaletta Bio, Inc.

CABA · held by 109 managers

Reported value

$194.8M

Holders

109

+25 new · −13 exited

Holders’ est. mark

$27.4M

Price effect on 81 books still in the name

Largest holder

$26M

Bain Capital Life Sciences Investors, LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Bain Capital Life Sciences Investors, LLC9.68M$26M$4.84MAdded$4.84M
JENNISON ASSOCIATES LLC8.97M$24.1M$4.45MAdded$4.63M
ADAGE CAPITAL PARTNERS GP, L.L.C.8.83M$23.8M$4.41MAdded$4.41M
MILLENNIUM MANAGEMENT LLC5.9M$15.9M$1.37MAdded$9.89M
Cormorant Asset Management, LP5.5M$14.8M$2.2MAdded$5.16M
VANGUARD CAPITAL MANAGEMENT LLC4.03M$10.8MHeld
TWO SIGMA INVESTMENTS, LP2.5M$6.72M$919.9KAdded$2.69M
BlackRock, Inc.2.37M$6.38M$1.16MAdded$1.28M
MARSHALL WACE, LLP2.18M$5.86M$479.5KAdded$3.76M
Renaissance Technologies2.04M$5.48M$761.3KAdded$2.14M
Qube Research & Technologies Ltd1.93M$5.21M$165.6KAdded$4.48M
MORGAN STANLEY1.41M$3.79M$671.9KAdded$845.2K
Opaleye Management Inc.1.38M$3.71M$450KAdded$1.74M
Woodline Partners LP1.25M$3.36M$625.1KAdded$625.1K
GEODE CAPITAL MANAGEMENT, LLC1.13M$3.05M$543.3KAdded$671K
SUPERSTRING CAPITAL MANAGEMENT LP1.07M$2.87M$533.1KCut−$2.07M
Ikarian Capital, LLC900K$2.42M$450KAdded$450K
GOLDMAN SACHS GROUP INC783.2K$2.11M$215.3KAdded$1.16M
CANTOR FITZGERALD, L. P.765K$2.06MNew
DIMENSIONAL FUND ADVISORS LP740.6K$1.99M$224.7KAdded$1M
BURKEHILL GLOBAL MANAGEMENT, LP700K$1.88M$350KAdded$350K
SCHRODER INVESTMENT MANAGEMENT GROUP756.6K$1.87M$242.1KAdded$242.1K
UBS Group AG606.7K$1.63M$207.8KAdded$721.6K
VANGUARD FIDUCIARY TRUST CO570.2K$1.53MHeld
KVP Capital Advisors, LP505.4K$1.36M$252.7KAdded$252.7K
State Street470K$1.26M$212.7KAdded$332.4K
Raiffeisen Bank International AG450K$1.11M$144KAdded$144K
Almitas Capital LLC337.4K$907.6K$168.7KAdded$59K
BANK OF AMERICA CORP /DE/269.3K$724.3K$7.2KAdded$692.8K
BRIDGEWAY CAPITAL MANAGEMENT, LLC267.4K$719.2K$65.3KAdded$433.1K
Diametric Capital, LP262.8K$707KNew
JANE STREET GROUP, LLC248.6K$668.7K$124.3KCut−$781.4K
WELLINGTON MANAGEMENT GROUP LLP247.7K$666.2KNew
Point72 Asset Management, L.P.246.6K$663.4K$28.3KAdded$539.3K
BOOTHBAY FUND MANAGEMENT, LLC243.4K$654.9K$121.7KAdded$121.7K
NORTHERN TRUST CORP238.4K$641.4K$119.2KAdded$119.2K
683 Capital Management, LLC225K$605.3K$112.5KCut−$245.7K
Invesco Ltd.192.4K$517.5K$94.6KAdded$103.2K
D. E. Shaw & Co., Inc.189.4K$509.5KNew
Hudson Bay Capital Management LP161.7K$435K$69.4KAdded$131.2K
Brevan Howard Capital Management LP149.7K$402.7KNew
Squarepoint Ops LLC144.7K$389.2K$72.3KAdded$62.7K
AMERICAN CENTURY COMPANIES INC108.3K$291.4K$29.4KAdded$162.7K
ExodusPoint Capital Management, LP106K$285.1KNew
Graham Capital Management, L.P.101.7K$273.5K$50.8KCut−$58.1K
BARCLAYS PLC97.8K$263.1K$48.9KCut−$220.3K
NOMURA HOLDINGS INC95.5K$256.9KNew
LETKO, BROSSEAU & ASSOCIATES INC90.5K$243.4K$45.2KAdded$45.2K
Quadrature Capital Ltd87.1K$234.2K$33.2KAdded$88.8K
LPL Financial LLC69.6K$187.2K$21.3KAdded$93.8K
TD Asset Management Inc66.9K$180K$33.5KCut−$14K
MATAURO, LLC55.1K$148.2K$27.6KAdded$27.6K
Bank of New York Mellon Corp54.3K$146.1K$27KAdded$27.7K
OMERS ADMINISTRATION Corp54.1K$145.5K$27.1KCut−$63.4K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC50.8K$136.7K$25.4KAdded$25.4K
Stonepine Capital Management, LLC50K$134.5K$25KCut−$240.2K
PRELUDE CAPITAL MANAGEMENT, LLC43.4K$116.8KNew
Vanguard Global Advisers, LLC35.8K$96.2KHeld
Jefferies Financial Group Inc.33.4K$90K$16.7KCut−$8.87K
AXQ CAPITAL, LP28.9K$77.8KNew
Schonfeld Strategic Advisors LLC28.2K$75.8K$14.1KCut−$2.56M
CITIGROUP INC27.5K$73.9K$13.7KCut−$87.7K
MERCER GLOBAL ADVISORS INC /ADV26.5K$71.3K$13.3KAdded$13.3K
FRED ALGER MANAGEMENT, LLC23.2K$62.3K$11.6KAdded$926
Catalyst Funds Management Pty Ltd21.3K$57.3KNew
Grey Ledge Advisors, LLC20K$53.8KNew
RAYMOND JAMES FINANCIAL INC19.8K$53.2KNew
Clear Harbor Asset Management, LLC19.5K$52.5K$9.75KAdded$9.75K
Vanguard Personalized Indexing Management, LLC19.4K$52.2K$9.69KAdded$3.14K
Private Advisor Group, LLC18K$48.5K$7.36KAdded$16.2K
Susquehanna Portfolio Strategies, LLC17.6K$47.3KNew
Callan Family Office, LLC17.4K$46.9K$8.72KCut−$2.54K
China Universal Asset Management Co., Ltd.17.1K$46K$7.84KAdded$11.6K
Jump Financial, LLC16.7K$44.9KNew
WINTON GROUP Ltd15.3K$41.2KNew
CRA Financial Services, LLC15K$40.4K$7.5KAdded$7.5K
Fidelity13K$34.9K$6.5KAdded$6.38K
SummitTX Capital, L.P.12.5K$33.7KNew
XTX Topco Ltd12.5K$33.7K$6.26KCut−$306.6K
Kestra Advisory Services, LLC11.8K$31.6KNew
Balyasny Asset Management L.P.11.2K$30K$5.58KCut−$82.9K
T. Rowe Price Investment Management, Inc.11.1M$29.8K$4.93KAdded$8.22K
Dynamic Technology Lab Private Ltd10.8K$29K$5.43KCut−$117K
JPMORGAN CHASE & CO7.21K$17.8K$2.02KCut−$3.67K
QUADRANT CAPITAL GROUP LLC6.5K$17.5KNew
WELLS FARGO & COMPANY/MN6K$16.1K$999Added$11.8K
Tower Research Capital LLC (TRC)5.78K$15.6K$2.89KCut−$50.9K
ANTIPODES PARTNERS Ltd5.62K$15.1K$2.81KCut−$22.5K
Mirae Asset Global Investments Co., Ltd.5.02K$13.5K$2.34KAdded$3.26K
PNC Financial Services Group, Inc.4.6K$12.4K$2.3KAdded$2.3K
OSAIC HOLDINGS, INC.2.91K$7.82KNew
GF FUND MANAGEMENT CO. LTD.2.15K$5.78K$946Added$1.64K
Rockefeller Capital Management L.P.2K$5.38KNew
BNP PARIBAS FINANCIAL MARKETS1.57K$4.22K$785Added$629
Caitong International Asset Management Co., Ltd1.32K$3.56KNew
Russell Investments Group, Ltd.939$2.53K$470Added$470
NISA INVESTMENT ADVISORS, LLC811$2.18K$406Added$406
ROYAL BANK OF CANADA781$2K$315Added$2K
JONES FINANCIAL COMPANIES LLLP653$1.75K$320Cut−$43.5K
GSA CAPITAL PARTNERS LLP561.7K$1.51K$152Added$845
PRICE T ROWE ASSOCIATES INC /MD/442.3K$1.19K$222Cut−$1.21K
Federation des caisses Desjardins du Quebec340$915$170Added$170
SBI Securities Co., Ltd.316$850$158Added$158
Fortitude Family Office, LLC163$438New
HRT FINANCIAL LP131.6K$353New
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO60$161$30Added$30
Virtu Financial LLC38.7K$104New
Arax Advisory Partners2$27$23Added$5

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.