Cabaletta Bio Ownership | Who Owns Cabaletta Bio?

Cabaletta Bio Ownership Summary

Cabaletta Bio is owned by 23.91% institutional investors, 0.99% insiders, and 75.10% retail investors. T. rowe price investment management is the largest institutional shareholder, holding 10.83% of CABA shares. T. Rowe Price Small-Cap Value is the top mutual fund, with 5.20% of its assets in Cabaletta Bio shares.

CABA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Cabaletta Bio	23.91%	0.99%	75.10%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Biotech Stocks	35.75%	11.83%	52.41%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
T. rowe price investment management	11.08M	10.83%	$29.81M
Blackrock	4.76M	9.65%	$35.58M
Bain capital life sciences investors	9.68M	9.46%	$26.03M
Jennison associates	8.97M	8.77%	$24.13M
Adage capital partners gp	8.83M	8.63%	$23.75M
Millennium management	5.90M	5.77%	$15.88M
Cormorant asset management, lp	5.50M	5.38%	$14.79M
Vanguard group	4.42M	4.32%	$9.68M
Heights capital management	2.08M	3.37%	$4.88M
Two sigma investments, lp	2.50M	2.44%	$6.72M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bain capital life sciences investors	9.68M	2.35%	$26.03M
Superstring capital management lp	1.07M	2.05%	$2.87M
Heights capital management	2.08M	1.34%	$4.88M
Cormorant asset management, lp	5.50M	0.74%	$14.79M
Opaleye management	1.38M	0.49%	$3.71M
Almitas capital	337.39K	0.21%	$907.58K
Ikarian capital	900.00K	0.20%	$2.42M
Diametric capital, lp	262.83K	0.18%	$707.01K
Gsa capital partners llp	561.73K	0.09%	$1.51M
Burkehill global management, lp	700.00K	0.09%	$1.88M

Top Buyers

Holder	Shares	% Assets	Change
Millennium management	5.90M	0.01%	3.17M
Qube research	1.93M	0.01%	1.60M
T. rowe price investment management	11.08M	0.02%	1.22M
Marshall wace, llp	2.18M	0.01%	1.22M
Cormorant asset management, lp	5.50M	0.74%	1.10M

Top Sellers

Holder	Shares	% Assets	Change
Alkeon capital management	-	-	-2.62M
Anson funds management lp	-	-	-1.82M
Vr adviser	-	-	-1.56M
Sofinnova investments	-	-	-1.53M
Alyeska investment group	-	-	-1.30M

New Positions

Holder	Shares	% Assets	Change	Value
Cantor fitzgerald, l. p.	765.00K	0.03%	765.00K	$2.06M
Vanguard fiduciary trust	570.19K	0.00%	570.19K	$1.53M
Diametric capital, lp	262.83K	0.18%	262.83K	$707.01K
Wellington management group llp	247.66K	0.00%	247.66K	$666.20K
D. e. shaw	189.41K	0.00%	189.41K	$509.52K

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-7.00
Gamma investing	-12.00
True wealth design	-17.00
Quantbot technologies lp	-19.00
Optiver b.v.	-24.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	61	-37.76%	24,453,553	-67.93%	23	0.43%	33	-46.77%	11	-38.89%
Dec 31, 2025	68	-15.00%	34,040,867	-50.82%	33	0.73%	45	18.42%	11	-62.07%
Sep 30, 2025	22	-75.56%	16,510,649	-77.31%	26	0.19%	12	-76.47%	7	-73.08%
Jun 30, 2025	89	-6.32%	72,682,277	102.25%	117	2.23%	50	19.05%	27	-20.59%
Mar 31, 2025	96	-12.73%	36,286,368	-5.67%	73	1.19%	42	-35.38%	35	45.83%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
T. Rowe Price Small-Cap Value	5.78M	5.20%	622.90K
T. Rowe Price U.S. SC Value Eq Tr-D	3.77M	3.38%	475.64K
Jennison Health Sciences Equity	3.52M	3.16%	-
PGIM Jennison Health Sciences Z	3.52M	3.16%	-
Vanguard US Total Market Shares ETF	1.40M	2.76%	-
Jennison SMid Cap Core Equity	1.29M	2.63%	-
PGIM Jennison Small Company A	1.29M	2.63%	-
Vanguard Total Stock Mkt Idx Inv	2.83M	2.54%	-
iShares Russell 2000 ETF	1.17M	2.31%	-
Alger Small Cap Focus Composite	1.08M	2.12%	-561.71K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jan 21, 2026	Chang David J.	Chief Medical Officer	Buy	$19.89K
Jan 21, 2026	Binder Gwendolyn	President, Science & Tech.	Buy	$24.76K
Jan 21, 2026	Tomasello Shawn	-	Buy	$50.32K
Jan 21, 2026	Gavel Steve	Chief Commercial Officer	Buy	$50.22K
Jan 21, 2026	Bollard Catherine	-	Buy	$9.98K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	8	-
2025 Q4	-	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q2	-	-

CABA Ownership FAQ

Who Owns Cabaletta Bio?

Cabaletta Bio shareholders are primarily institutional investors at 23.91%, followed by 0.99% insiders and 75.10% retail investors. The average institutional ownership in Cabaletta Bio's industry, Biotech Stocks , is 35.75%, which Cabaletta Bio falls below.

Who owns the most shares of Cabaletta Bio?

Cabaletta Bio’s largest shareholders are T. rowe price investment management (11.08M shares, 10.83%), Blackrock (4.76M shares, 9.65%), and Bain capital life sciences investors (9.68M shares, 9.46%). Together, they hold 29.94% of Cabaletta Bio’s total shares outstanding.

Does Blackrock own Cabaletta Bio?

Yes, BlackRock owns 9.65% of Cabaletta Bio, totaling 4.76M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 35.58M$. In the last quarter, BlackRock increased its holdings by 699.11K shares, a 17.23% change.

Who is Cabaletta Bio’s biggest shareholder by percentage of total assets invested?

Bain capital life sciences investors is Cabaletta Bio’s biggest shareholder by percentage of total assets invested, with 2.35% of its assets in 9.68M Cabaletta Bio shares, valued at 26.03M$.

Who is the top mutual fund holder of Cabaletta Bio shares?

T. Rowe Price Small-Cap Value is the top mutual fund holder of Cabaletta Bio shares, with 5.20% of its total shares outstanding invested in 5.78M Cabaletta Bio shares.

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