Adage Capital Partners’s Cabaletta Bio CABA Stock Holding History

Adage Capital Partners’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 Q2	$28.5M	Buy	9,174,758 +345,000	+4%	+$1.13M	0.04%	404
2026 Q1	$23.8M	Hold	8,829,758	–	–	0.04%	428
2025 Q4	$19.3M	Hold	8,829,758	–	–	0.03%	492
2025 Q3	$20.7M	Hold	8,829,758	–	–	0.03%	457
2025 Q2	$13.4M	Buy	8,829,758 +5,195,285	+143%	+$8.1M	0.02%	551
2025 Q1	$5.03M	Hold	3,634,473	–	–	0.01%	697
2024 Q4	$8.25M	Buy	3,634,473 +597,828	+20%	+$2.1M	0.01%	650
2024 Q3	$14.3M	Hold	3,036,645	–	–	0.03%	536
2024 Q2	$22.7M	Hold	3,036,645	–	–	0.04%	398
2024 Q1	$51.8M	Sell	3,036,645 -230,000	-7%	-$4.94M	0.1%	222
2023 Q4	$74.2M	Hold	3,266,645	–	–	0.15%	145
2023 Q3	$49.7M	Hold	3,266,645	–	–	0.11%	196
2023 Q2	$42.2M	Buy	3,266,645 +725,000	+29%	+$7.87M	0.09%	224
2023 Q1	$21M	Hold	2,541,645	–	–	0.05%	400
2022 Q4	$23.5M	Hold	2,541,645	–	–	0.06%	381
2022 Q3	$1.65M	Hold	2,541,645	–	–	﹤0.01%	866
2022 Q2	$2.69M	Hold	2,541,645	–	–	0.01%	862
2022 Q1	$5.16M	Hold	2,541,645	–	–	0.01%	830
2021 Q4	$9.63M	Sell	2,541,645 -500,000	-16%	-$5.34M	0.02%	711
2021 Q3	$37M	Hold	3,041,645	–	–	0.07%	274
2021 Q2	$26.2M	Hold	3,041,645	–	–	0.05%	372
2021 Q1	$33.8M	Sell	3,041,645 -139,160	-4%	-$1.7M	0.07%	304
2020 Q4	$39.7M	Sell	3,180,805 -223,955	-7%	-$2.9M	0.09%	249
2020 Q3	$36.9M	Sell	3,404,760 -160,249	-4%	-$1.84M	0.09%	231
2020 Q2	$39.7M	Sell	3,565,009 -39,751	-1%	-$304K	0.1%	228
2020 Q1	$26.3M	Sell	3,604,760 -137,166	-4%	-$1.88M	0.08%	266
2019 Q4	$52.3M	Buy	+3,741,926	New	+$44.3M	0.13%	192

Other funds holding CABA

Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

BCLSI

Bain Capital Life Sciences Investors Boston, Massachusetts $1.68B AUM 126.09% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

CAM

Cormorant Asset Management Boston, Massachusetts $1.95B AUM 773.9% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Adage Capital Partners's CABA Position: Q2 2026 in Review

Adage Capital Partners increased its Cabaletta Bio (CABA) stake by 3.9% in Q2 2026, buying an estimated $1.13M and bringing the position to 9,174,758 shares worth $28.5M. The position accounts for 0.04% of the portfolio, ranked #404.

Adage Capital Partners first reported a position in CABA in Q4 2019 and has held it in 27 quarters since. The position peaked at $74.2M in Q4 2023. 140 funds tracked by Wall St. Rank hold CABA as of Q2 2026.

Adage Capital Partners held 9,174,758 shares of Cabaletta Bio worth $28.5M as of Q2 2026.
Adage Capital Partners bought 345,000 Cabaletta Bio shares in Q2 2026, an estimated $1.13M.
Cabaletta Bio made up 0.04% of Adage Capital Partners's portfolio in Q2 2026, its #404 holding.
Adage Capital Partners first reported a position in Cabaletta Bio in Q4 2019 and has held it in 27 quarters since.
Adage Capital Partners's Cabaletta Bio position peaked at $74.2M in Q4 2023.
140 funds tracked by Wall St. Rank held Cabaletta Bio as of Q2 2026.

Based on Adage Capital Partners's 13F filing for Q2 2026, filed 14 Aug 2026.