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Cabaletta Bio, Inc.

CABA
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001759138

No open-market purchases or sales by Cabaletta Bio, Inc. insiders were filed in the last 90 days; 139 institutions reported holding it in 13F filings for Q2 2026, worth $490.4M in total; no superinvestor holds it.

13F holders, Q4 2023

Institutional positions in Cabaletta Bio, Inc. as of Dec 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
128
+32 vs. Q3 2023
Shares held
48.5M
+7.65M (+18.7%) vs. Q3 2023
Total value
$1.10B
+$479.6M (+77.1%) vs. Q3 2023
New holders
42
41 more added
Sold out
10
31 more reduced

1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CABA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2023: 128 institutions
Q1 2021: 68 institutionsQ2 2021: 63 institutionsQ3 2021: 61 institutionsQ4 2021: 66 institutionsQ1 2022: 62 institutionsQ2 2022: 55 institutionsQ3 2022: 54 institutionsQ4 2022: 61 institutionsQ1 2023: 72 institutionsQ2 2023: 84 institutionsQ3 2023: 97 institutionsQ4 2023: 128 institutionsQ1 2024: 159 institutionsQ2 2024: 142 institutionsQ3 2024: 120 institutionsQ4 2024: 109 institutionsQ1 2025: 93 institutionsQ2 2025: 86 institutionsQ3 2025: 75 institutionsQ4 2025: 95 institutionsQ1 2026: 108 institutionsQ2 2026: 139 institutions
Value heldQ4 2023: $1.10B
Q1 2021: $180.1MQ2 2021: $135.5MQ3 2021: $211.3MQ4 2021: $68.9MQ1 2022: $36.9MQ2 2022: $17.8MQ3 2022: $7.76MQ4 2022: $183.9MQ1 2023: $203.9MQ2 2023: $470.5MQ3 2023: $622.6MQ4 2023: $1.10BQ1 2024: $870.9MQ2 2024: $380.0MQ3 2024: $226.7MQ4 2024: $87.2MQ1 2025: $50.3MQ2 2025: $110.7MQ3 2025: $162.0MQ4 2025: $166.9MQ1 2026: $227.5MQ2 2026: $490.4M
Institutions holding CABA and their total value by quarter
QuarterHoldersValue
Q2 2026139$490.4M
Q1 2026108$227.5M
Q4 202595$166.9M
Q3 202575$162.0M
Q2 202586$110.7M
Q1 202593$50.3M
Q4 2024109$87.2M
Q3 2024120$226.7M
Q2 2024142$380.0M
Q1 2024159$870.9M
Q4 2023128$1.10B
Q3 202397$622.6M
Q2 202384$470.5M
Q1 202372$203.9M
Q4 202261$183.9M
Q3 202254$7.76M
Q2 202255$17.8M
Q1 202262$36.9M
Q4 202166$68.9M
Q3 202161$211.3M
Q2 202163$135.5M
Q1 202168$180.1M

Institutions, Q4 2023

Shares, value and share of portfolio for each institution holding Cabaletta Bio, Inc.; share changes are against Q3 2023.

Institutions holding CABA in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Blackstone Group Inc.347,494$7.89M0.04%+347,494New
Alkeon Capital Management LLC360,000$8.17M0.05%+360,000New
Morgan Stanley387,383$8.79M0.00%+165,366+74.5%Added
Victory Capital Management Inc403,927$9.17M0.01%+337,277+506.0%Added
Sofinnova Investments, Inc.429,395$9.75M0.55%+429,395New
StemPoint Capital LP450,706$10.2M2.76%+450,706New
TCG Crossover Management, LLC486,795$11.1M1.23%00.0%Unchanged
Integral Health Asset Management, LLC520,000$11.8M1.70%+190,000+57.6%Added
Price T Rowe Associates Inc527,765$12.0M0.00%+512,450+3,346.1%Added
Wellington Management Group LLP539,876$12.3M0.00%+293,306+119.0%Added
Geode Capital Management, LLC753,176$17.1M0.00%+61,304+8.9%Added
Polar Capital Holdings Plc1,250,000$28.4M0.20%+1,250,000New
Redmile Group, LLC1,374,189$31.2M1.12%−400,063−22.5%Reduced
Invesco Ltd.1,397,942$31.7M0.01%+543,899+63.7%Added
Jennison Associates LLC1,626,628$36.9M0.03%+204,261+14.4%Added
T. Rowe Price Investment Management, Inc.1,832,854$41.6M0.03%+1,832,854New
Commodore Capital LP1,900,000$43.1M3.77%−625,753−24.8%Reduced
Holocene Advisors, LP1,920,323$43.6M0.17%+737,277+62.3%Added
Bain Capital Life Sciences Investors, LLC2,000,000$45.4M4.35%00.0%Unchanged
Perceptive Advisors LLC2,003,058$45.5M1.02%+870,567+76.9%Added
Deerfield Management Company, L.P. (Series C)2,007,729$45.6M0.84%−332,389−14.2%Reduced
Lynx1 Capital Management LP2,110,401$47.9M18.84%+4,401+0.2%Added
Vanguard Group Inc2,131,931$48.4M0.00%+163,823+8.3%Added
VR Adviser, LLC2,563,952$58.2M3.99%+590,699+29.9%Added
State Street Corp2,594,470$58.9M0.00%+1,061,628+69.3%Added
Adage Capital Partners GP, L.L.C.3,266,645$74.2M0.15%00.0%Unchanged
Fred Alger Management, LLC3,327,132$75.5M0.41%−932,323−21.9%Reduced
BlackRock Inc.4,409,005$100.1M0.00%+1,966,808+80.5%Added
Cormorant Asset Management, LP0$00.00%−2,879,424−100.0%Sold out
Velan Capital Investment Management LP0$00.00%−150,000−100.0%Sold out
Putnam Investments LLC0$00.00%−58,934−100.0%Sold out
EAM Investors, LLC0$00.00%−55,156−100.0%Sold out
UBS Oconnor LLC0$00.00%−48,332−100.0%Sold out
Virtu Financial LLC0$00.00%−25,631−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−10,123−100.0%Sold out
WR Wealth Planners, LLC0$00.00%−900−100.0%Sold out
Authentikos Wealth Advisory, LLC0$00.00%−33−100.0%Sold out
Russell Investments Group, Ltd.0$00.00%−14−100.0%Sold out
First Republic Investment Management, Inc.––––Not filed