Cabaletta Bio CABA Institutional Ownership

NASDAQ CABA

$3.45 -0.03 (-0.86%)

As of: Sep 4, 2026 · 2:24 PM EDT

Institutions by Trading Activity

142 Institutions

Increased 106 74.6%

Unchanged 15 10.6%

Reduced 21 14.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

104.69%

▼-1.29 pp QoQ

Shares Held by Institutions

158.25Mn

of 151.16Mn outstanding

▲+90.78% QoQ

Shares Outstanding

151.16Mn

-7.09Mn held outside 13F filers

Institutional Investors

142

filed 13F for Jun 2026

▲+34 vs prior quarter

Net Shares Added (QoQ)

+75.30Mn

accumulated since last quarter

Value of Holdings

$550.70Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Cabaletta Bio, Inc. (NASDAQ:CABA) is held by 142 institutional investors per 13F filings through June 2026.

These investors collectively held 104.7% of Cabaletta Bio's outstanding shares in June 2026, down from 106.0% in March 2026.
Their total shares held in CABA increased 90.78% from the prior quarter, while the number of investors in Cabaletta Bio increased 67.06% year over year.
Activity in CABA broke down as 106 buyers, 21 sellers, and 15 unchanged among 142 total holders.
Institutional investors collectively held 158.25Mn shares in Cabaletta Bio as of June 2026, up by 75.3Mn shares quarter on quarter, and up 88.38Mn shares year over year.
JENNISON ASSOCIATES LLC leads ownership in CABA with 20.03Mn shares as of June 30, 2026, equal to 13.25% of outstanding shares.
The largest buyers of Cabaletta Bio for the quarter ending June 2026 were JENNISON ASSOCIATES LLC (11.06Mn), BlackRock, Inc. (8.38Mn), T. Rowe Price Investment Management, Inc. (7.79Mn), Bain Capital Life Sciences Investors, LLC (7.56Mn), State Street Corp (7.37Mn).
The biggest sellers of Cabaletta Bio for the quarter ending June 2026 included MILLENNIUM MANAGEMENT LLC (3.83Mn), TWO SIGMA INVESTMENTS, LP (1.09Mn), MARSHALL WACE, LLP (613.88K), Qube Research & Technologies Ltd (508.15K), RENAISSANCE TECHNOLOGIES LLC (501.36K).
Per Business Quant data, the top 10 holders of Cabaletta Bio for the quarter ending June 2026 are JENNISON ASSOCIATES LLC (20.03Mn), T. Rowe Price Investment Management, Inc. (18.87Mn), Bain Capital Life Sciences Investors, LLC (17.24Mn), BlackRock, Inc. (10.75Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (9.17Mn), State Street Corp (7.84Mn), VANGUARD CAPITAL MANAGEMENT LLC (7.23Mn), Cormorant Asset Management, LP (5.0Mn), PRICE T ROWE ASSOCIATES INC /MD/ (4.42Mn), Woodline Partners LP (4.2Mn).

Form 13F Holdings

142 Institutional Holders

Report period 30 Jun, 2026

Total shares held 158.25Mn

Of outstanding 104.69%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	JENNISON ASSOCIATES LLC	0000053417	20,033,730	13.25%	▲11,063,152	+123.33%	$62.30Mn
2	T. Rowe Price Investment Management, Inc.	0001897612	18,869,907	12.48%	▲7,789,902	+70.31%	$58.69K
3	Bain Capital Life Sciences Investors, LLC	0001703031	17,241,445	11.41%	▲7,564,320	+78.17%	$53.62Mn
4	BlackRock, Inc.	0002012383	10,754,701	7.11%	▲8,381,698	+353.21%	$33.45Mn
5	ADAGE CAPITAL PARTNERS GP, L.L.C.	0001165408	9,174,758	6.07%	▲345,000	+3.91%	$28.53Mn
6	State Street Corp	0000093751	7,839,305	5.19%	▲7,369,327	+1,568.02%	$24.38Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	7,227,018	4.78%	▲3,198,027	+79.38%	$22.48Mn
8	Cormorant Asset Management, LP	0001583977	5,000,000	3.31%	▼500,000	-9.09%	$15.55Mn
9	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	4,418,674	2.92%	▲3,976,397	+899.07%	$13.74K
10	Woodline Partners LP	0001784547	4,200,142	2.78%	▲2,949,900	+235.95%	$13.06Mn
11	NORGES BANK	0001374170	4,112,401	2.72%	▲4,112,401	0.00%	$12.79Mn
12	Opaleye Management Inc.	0001595855	3,863,800	2.56%	▲2,483,800	+179.99%	$12.02Mn
13	CITADEL ADVISORS LLC	0001423053	3,522,112	2.33%	▲3,522,112	0.00%	$10.95Mn
14	GEODE CAPITAL MANAGEMENT, LLC	0001214717	3,459,464	2.29%	▲2,326,219	+205.27%	$10.76Mn
15	Franklin Resources Inc	0000038777	2,413,937	1.60%	▲2,413,937	0.00%	$7.51Mn
16	Goldman Sachs Group Inc	0000886982	2,211,825	1.46%	▲1,428,605	+182.40%	$6.88Mn
17	MILLENNIUM MANAGEMENT LLC	0001273087	2,068,491	1.37%	▼3,834,790	-64.96%	$6.43Mn
18	MARSHALL WACE, LLP	0001318757	1,565,939	1.04%	▼613,879	-28.16%	$4.87Mn
19	RENAISSANCE TECHNOLOGIES LLC	0001037389	1,535,300	1.02%	▼501,363	-24.62%	$4.77Mn
20	UBS Group AG	0001610520	1,471,895	0.97%	▲865,231	+142.62%	$4.58Mn

Showing 1 to 20 of 142 holders