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
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 $14.1B AUM 25.52% 1-Year Est. Return
2L
22NW LP Seattle, Washington $146M AUM 29.83% 1-Year Est. Return
GI
GAMCO Investors Greenwich, Connecticut $10.2B AUM 30.27% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return

Optiver Holding's FSTR Position: Q1 2026 in Review

Optiver Holding reduced its Foster (FSTR) stake by 39% in Q1 2026, selling an estimated $1.89K and leaving 100 shares worth $2.79K. The position accounts for ﹤0.01% of the portfolio, ranked #1701.

Optiver Holding first reported a position in FSTR in Q3 2025 and has held it in 3 quarters since. The position peaked at $4.42K in Q4 2025. 109 funds tracked by Wall St. Rank hold FSTR as of Q1 2026.

  • Optiver Holding held 100 shares of Foster worth $2.79K as of Q1 2026.
  • Optiver Holding sold 64 Foster shares in Q1 2026, an estimated $1.89K.
  • Foster made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #1701 holding.
  • Optiver Holding first reported a position in Foster in Q3 2025 and has held it in 3 quarters since.
  • Optiver Holding's Foster position peaked at $4.42K in Q4 2025.
  • 109 funds tracked by Wall St. Rank held Foster as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.