Company · Ownership research

Cabaletta Bio, Inc. CABA

CIK 0001759138 · CUSIP 12674W109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 12674W109 (CABA), not CUSIP 12674W909 (CABA), CUSIP 12674W959 (CABA), and does not merge CUSIPs.

This page lists the top 20 of 160 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock Inc. CIK 1364742 · View history	$69.21M 4,057,113 shares	0.00%	-351.89K(-8.00%)Reduced	SEC filing ↗ May 10, 2024	▾
02	STATE STREET CORP CIK 93751 · View history	$63.83M 3,741,460 shares	0.00%	+1.15M(+44.20%)Added	SEC filing ↗ May 15, 2024	▾
03	JENNISON ASSOCIATES LLC CIK 53417 · View history	$58.40M 3,422,984 shares	0.04%	+1.80M(+110.40%)Added	SEC filing ↗ May 2, 2024	▾
04	FRED ALGER MANAGEMENT, LLC CIK 3520 · View history	$53.06M 3,110,314 shares	0.26%	-216.82K(-6.50%)Reduced	SEC filing ↗ May 15, 2024	▾
05	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$51.81M 3,036,645 shares	0.10%	-230.00K(-7.00%)Reduced	SEC filing ↗ May 15, 2024	▾
06	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$42.15M 2,470,493 shares	0.03%	+637.64K(+34.80%)Added	SEC filing ↗ May 15, 2024	▾
07	VANGUARD GROUP INC CIK 102909 · View history	$38.83M 2,276,222 shares	0.00%	+144.29K(+6.80%)Added	SEC filing ↗ May 10, 2024	▾
08	Lynx1 Capital Management LP CIK 1910456 · Amended · View history	$35.54M 2,082,973 shares	9.15%	-27.43K(-1.30%)Reduced	SEC filing ↗ May 15, 2024	▾
09	PERCEPTIVE ADVISORS LLC CIK 1224962 · Amended · View history	$29.29M 1,716,660 shares	0.52%	-286.40K(-14.30%)Reduced	SEC filing ↗ Aug 6, 2024	▾
10	Bain Capital Life Sciences Investors, LLC CIK 1703031 · View history	$27.59M 1,617,364 shares	2.22%	-382.64K(-19.10%)Reduced	SEC filing ↗ May 15, 2024	▾
11	VR Adviser, LLC CIK 1615982 · View history	$26.68M 1,563,952 shares	1.27%	-1.00M(-39.00%)Reduced	SEC filing ↗ May 15, 2024	▾
12	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) CIK 1009258 · View history	$21.47M 1,258,650 shares	0.37%	-749.08K(-37.30%)Reduced	SEC filing ↗ May 15, 2024	▾
13	Polar Capital Holdings Plc CIK 1837309 · View history	$21.32M 1,250,000 shares	0.11%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
14	Cormorant Asset Management, LP CIK 1583977 · View history	$18.77M 1,100,000 shares	0.83%	+1.10MNew	SEC filing ↗ May 15, 2024	▾
15	COMMODORE CAPITAL LP CIK 1831942 · View history	$18.77M 1,100,000 shares	1.25%	-800.00K(-42.10%)Reduced	SEC filing ↗ May 15, 2024	▾
16	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$17.20M 1,008,259 shares	0.00%	+468.38K(+86.80%)Added	SEC filing ↗ May 15, 2024	▾
17	STEMPOINT CAPITAL LP CIK 1952142 · Amended · View history	$17.13M 1,003,916 shares	4.58%	+553.21K(+122.70%)Added	SEC filing ↗ May 14, 2024	▾
18	MORGAN STANLEY CIK 895421 · Amended · View history	$15.11M 885,704 shares	0.00%	+498.32K(+128.60%)Added	SEC filing ↗ Oct 17, 2024	▾
19	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$13.19M 773,090 shares	0.00%	+19.91K(+2.60%)Added	SEC filing ↗ May 13, 2024	▾
20	Invesco Ltd. CIK 914208 · View history	$12.71M 744,777 shares	0.00%	-653.16K(-46.70%)Reduced	SEC filing ↗ May 14, 2024	▾

Showing 20 / 160 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

160

Cancelled or null records excluded

Disclosed shares

51,050,605

Not deduplicated across managers

Disclosed value

$870.92M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Cabaletta Bio, Inc. · Q1 2024

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.