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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 		$8.77M Buy
2,820,500
+1,741,600
+161% +$5.73M ﹤0.01% 3605
2026
Q1 		$2.9M Buy
1,078,900
+395,800
+58% +$1.1M ﹤0.01% 5331
2025
Q4 		$1.5M Buy
683,100
+266,000
+64% +$659K ﹤0.01% 6262
2025
Q3 		$976K Buy
417,100
+167,100
+67% +$287K ﹤0.01% 7422
2025
Q2 		$380K Buy
250,000
+136,700
+121% +$213K ﹤0.01% 9815
2025
Q1 		$157K Sell
113,300
-4,200
-4% -$8.95K ﹤0.01% 11185
2024
Q4 		$267K Buy
117,500
+30,400
+35% +$107K ﹤0.01% 10085
2024
Q3 		$411K Buy
+87,100
New +$504K ﹤0.01% 8940
2024
Q2 		– Sell
-124,700
Closed -$2.13M – 12097
2024
Q1 		$2.13M Sell
124,700
-41,900
-25% -$899K ﹤0.01% 5196
2023
Q4 		$3.78M Buy
166,600
+116,400
+232% +$1.96M ﹤0.01% 4196
2023
Q3 		$764K Sell
50,200
-34,900
-41% -$477K ﹤0.01% 7248
2023
Q2 		$1.1M Buy
85,100
+50,200
+144% +$545K ﹤0.01% 6460
2023
Q1 		$289K Buy
34,900
+300
+0.9% +$2.81K ﹤0.01% 9808
2022
Q4 		$320K Sell
34,600
-21,000
-38% -$76.5K ﹤0.01% 8933
2022
Q3 		$36K Buy
+55,600
New +$66.9K ﹤0.01% 12377
2022
Q1 		– Sell
-29,600
Closed -$112K – 13027
2021
Q4 		$112K Sell
29,600
-29,400
-50% -$314K ﹤0.01% 12059
2021
Q3 		$717K Buy
+59,000
New +$544K ﹤0.01% 8443

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.