Optiver Holding
FSTR icon

Optiver Holding’s Foster FSTR Stock Holding History

Optiver Holding’s Portfolio FSTR Stock Details FSTR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.26K Sell
28
-72
-72% -$2.69K ﹤0.01% 2432
2026
Q1 		$2.79K Sell
100
-64
-39% -$1.89K ﹤0.01% 1701
2025
Q4 		$4.42K Hold
164
– – ﹤0.01% 1458
2025
Q3 		$4.42K Buy
+164
New +$4.06K ﹤0.01% 1851

Other funds holding FSTR

BIP
Brandes Investment Partners La Jolla, California $14.3B AUM 23.11% 1-Year Est. Return
GI
GAMCO Investors Greenwich, Connecticut $11.1B AUM 41.79% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HIM
Hillsdale Investment Management Toronto, Ontario, Canada $4.39B AUM 72.96% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Optiver Holding's FSTR Position: Q2 2026 in Review

Optiver Holding reduced its Foster (FSTR) stake by 72% in Q2 2026, selling an estimated $2.69K and leaving 28 shares worth $1.26K. The position accounts for ﹤0.01% of the portfolio, ranked #2432.

Optiver Holding first reported a position in FSTR in Q3 2025 and has held it in 4 quarters since. The position peaked at $4.42K in Q4 2025. 134 funds tracked by Wall St. Rank hold FSTR as of Q2 2026.

  • Optiver Holding held 28 shares of Foster worth $1.26K as of Q2 2026.
  • Optiver Holding sold 72 Foster shares in Q2 2026, an estimated $2.69K.
  • Foster made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #2432 holding.
  • Optiver Holding first reported a position in Foster in Q3 2025 and has held it in 4 quarters since.
  • Optiver Holding's Foster position peaked at $4.42K in Q4 2025.
  • 134 funds tracked by Wall St. Rank held Foster as of Q2 2026.

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