Wellington Management Group’s Cabaletta Bio CABA Stock Holding History

Wellington Management Group’s Portfolio CABA Stock Details CABA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$666K	Buy	+247,659	New	+$688K	﹤0.01%	1742
2025 Q1	–	Sell	-180,157	Closed	-$409K	–	1954
2024 Q4	$409K	Buy	180,157 +23,106	+15%	+$81.1K	﹤0.01%	1850
2024 Q3	$741K	Sell	157,051 -1,758	-1%	-$10.2K	﹤0.01%	1764
2024 Q2	$1.19M	Sell	158,809 -849,450	-84%	-$10.4M	﹤0.01%	1633
2024 Q1	$17.2M	Buy	1,008,259 +468,383	+87%	+$10.1M	﹤0.01%	984
2023 Q4	$12.3M	Buy	539,876 +293,306	+119%	+$4.93M	﹤0.01%	1059
2023 Q3	$3.75M	Buy	+246,570	New	+$3.37M	﹤0.01%	1351
2021 Q4	–	Sell	-534,700	Closed	-$6.5M	–	2185
2021 Q3	$6.5M	Hold	534,700	–	–	﹤0.01%	1424
2021 Q2	$4.6M	Buy	534,700 +352,700	+194%	+$3.47M	﹤0.01%	1524
2021 Q1	$2.02M	Buy	182,000 +72,300	+66%	+$883K	﹤0.01%	1624
2020 Q4	$1.37M	Buy	+109,700	New	+$1.42M	﹤0.01%	1564

Other funds holding CABA

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

BCLSI

Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return

Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

CAM

Cormorant Asset Management Boston, Massachusetts $1.99B AUM 737.95% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Wellington Management Group's CABA Position: Q1 2026 in Review

Wellington Management Group opened a new position in Cabaletta Bio (CABA) in Q1 2026: 247,659 shares worth $666K. The stake represents ﹤0.01% of the portfolio and ranks #1742 among its holdings. This is a return to the name: Wellington Management Group previously reported a position in CABA as recently as Q4 2024.

Wellington Management Group first reported a position in CABA in Q4 2020 and has held it in 11 quarters since. The position peaked at $17.2M in Q1 2024. 108 funds tracked by Wall St. Rank hold CABA as of Q1 2026.

Wellington Management Group held 247,659 shares of Cabaletta Bio worth $666K as of Q1 2026.
Cabaletta Bio was a new Wellington Management Group position in Q1 2026.
Cabaletta Bio made up ﹤0.01% of Wellington Management Group's portfolio in Q1 2026, its #1742 holding.
Wellington Management Group first reported a position in Cabaletta Bio in Q4 2020 and has held it in 11 quarters since.
Wellington Management Group's Cabaletta Bio position peaked at $17.2M in Q1 2024.
108 funds tracked by Wall St. Rank held Cabaletta Bio as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.