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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 		$142K Buy
45,800
+8,600
+23% +$28.3K ﹤0.01% 12246
2026
Q1 		$100K Sell
37,200
-49,100
-57% -$136K ﹤0.01% 12344
2025
Q4 		$189K Buy
86,300
+71,400
+479% +$177K ﹤0.01% 10941
2025
Q3 		$34.9K Sell
14,900
-47,200
-76% -$81K ﹤0.01% 11952
2025
Q2 		$94.4K Buy
62,100
+4,100
+7% +$6.39K ﹤0.01% 11831
2025
Q1 		$80.6K Buy
58,000
+27,400
+90% +$58.4K ﹤0.01% 11670
2024
Q4 		$69.5K Sell
30,600
-41,200
-57% -$145K ﹤0.01% 11543
2024
Q3 		$339K Buy
71,800
+52,500
+272% +$304K ﹤0.01% 9330
2024
Q2 		$144K Sell
19,300
-14,500
-43% -$178K ﹤0.01% 10727
2024
Q1 		$577K Buy
33,800
+10,900
+48% +$234K ﹤0.01% 8163
2023
Q4 		$520K Sell
22,900
-14,000
-38% -$235K ﹤0.01% 8578
2023
Q3 		$562K Buy
36,900
+8,600
+30% +$118K ﹤0.01% 7960
2023
Q2 		$365K Buy
+28,300
New +$307K ﹤0.01% 9037
2022
Q2 		– Sell
-13,600
Closed -$28K – 12946
2022
Q1 		$28K Sell
13,600
-42,300
-76% -$111K ﹤0.01% 12528
2021
Q4 		$212K Buy
55,900
+25,100
+81% +$268K ﹤0.01% 11320
2021
Q3 		$375K Sell
30,800
-9,200
-23% -$84.8K ﹤0.01% 10077
2021
Q2 		$344K Buy
+40,000
New +$393K ﹤0.01% 10476

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.