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Jeff Yass’s Cabaletta Bio CABA Stock Holding History

Jeff Yass’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 		$197K Buy
+63,228
New +$208K ﹤0.01% 11969
2026
Q1 		– Sell
-138,281
Closed -$384K – 13220
2025
Q4 		$303K Sell
138,281
-233,827
-63% -$579K ﹤0.01% 9924
2025
Q3 		$871K Buy
372,108
+248,483
+201% +$426K ﹤0.01% 7672
2025
Q2 		$188K Buy
123,625
+65,845
+114% +$103K ﹤0.01% 11277
2025
Q1 		$80K Sell
57,780
-374,155
-87% -$797K ﹤0.01% 11674
2024
Q4 		$980K Buy
431,935
+408,583
+1,750% +$1.43M ﹤0.01% 6992
2024
Q3 		$110K Sell
23,352
-43,621
-65% -$252K ﹤0.01% 10992
2024
Q2 		$501K Buy
66,973
+2,874
+4% +$35.2K ﹤0.01% 8260
2024
Q1 		$1.09M Buy
64,099
+42,045
+191% +$902K ﹤0.01% 6676
2023
Q4 		$501K Buy
+22,054
New +$371K ﹤0.01% 8664
2023
Q2 		– Sell
-265,355
Closed -$2.88M – 12120
2023
Q1 		$2.19M Buy
265,355
+85,361
+47% +$799K ﹤0.01% 4940
2022
Q4 		$1.66M Sell
179,994
-85,375
-32% -$311K ﹤0.01% 5061
2022
Q3 		$173K Buy
265,369
+253,231
+2,086% +$305K ﹤0.01% 11051
2022
Q2 		$13K Sell
12,138
-15,609
-56% -$22.1K ﹤0.01% 12454
2022
Q1 		$56K Sell
27,747
-125,560
-82% -$328K ﹤0.01% 12259
2021
Q4 		$581K Buy
153,307
+95,376
+165% +$1.02M ﹤0.01% 8780
2021
Q3 		$704K Buy
57,931
+37,541
+184% +$346K ﹤0.01% 8488
2021
Q2 		$175K Buy
20,390
+1,689
+9% +$16.6K ﹤0.01% 11725
2021
Q1 		$208K Buy
+18,701
New +$228K ﹤0.01% 11356
2020
Q1 		– Sell
-12,458
Closed -$174K – 10259
2019
Q4 		$174K Buy
+12,458
New +$148K ﹤0.01% 8856

Other funds holding CABA

Jennison Associates
Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return
T. Rowe Price Investment Management
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
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
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
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return

Jeff Yass's CABA Position: Q2 2026 in Review

Jeff Yass opened a new position in Cabaletta Bio (CABA) in Q2 2026: 63,228 shares worth $197K. The stake represents ﹤0.01% of the portfolio and ranks #11969 among its holdings. This is a return to the name: Jeff Yass previously reported a position in CABA as recently as Q4 2025.

Jeff Yass first reported a position in CABA in Q4 2019 and has held it in 20 quarters since. The position peaked at $2.19M in Q1 2023. 139 funds tracked by Wall St. Rank hold CABA as of Q2 2026.

  • Jeff Yass held 63,228 shares of Cabaletta Bio worth $197K as of Q2 2026.
  • Cabaletta Bio was a new Jeff Yass position in Q2 2026.
  • Cabaletta Bio made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #11969 holding.
  • Jeff Yass first reported a position in Cabaletta Bio in Q4 2019 and has held it in 20 quarters since.
  • Jeff Yass's Cabaletta Bio position peaked at $2.19M in Q1 2023.
  • 139 funds tracked by Wall St. Rank held Cabaletta Bio as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.