Optiver Holding
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Optiver Holding’s Cabaletta Bio CABA Stock Holding History

Optiver Holding’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 		$1.27K Buy
+408
New +$1.34K ﹤0.01% 2431
2026
Q1 		– Sell
-24
Closed -$53 – 2365
2025
Q4 		$53 Hold
24
– – ﹤0.01% 2394
2025
Q3 		$56 Buy
+24
New +$41 ﹤0.01% 2614

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

Optiver Holding's CABA Position: Q2 2026 in Review

Optiver Holding opened a new position in Cabaletta Bio (CABA) in Q2 2026: 408 shares worth $1.27K. The stake represents ﹤0.01% of the portfolio and ranks #2431 among its holdings. This is a return to the name: Optiver Holding previously reported a position in CABA as recently as Q4 2025.

Optiver Holding first reported a position in CABA in Q3 2025 and has held it in 3 quarters since. 140 funds tracked by Wall St. Rank hold CABA as of Q2 2026.

  • Optiver Holding held 408 shares of Cabaletta Bio worth $1.27K as of Q2 2026.
  • Cabaletta Bio was a new Optiver Holding position in Q2 2026.
  • Cabaletta Bio made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #2431 holding.
  • Optiver Holding first reported a position in Cabaletta Bio in Q3 2025 and has held it in 3 quarters since.
  • 140 funds tracked by Wall St. Rank held Cabaletta Bio as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.