Optiver Holding
MNTK icon

Optiver Holding’s Montauk Renewables MNTK Stock Holding History

Optiver Holding’s Portfolio MNTK Stock Details MNTK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$6 Sell
4
-632
-99% -$935 ﹤0.01% 2742
2026
Q1 		$731 Sell
636
-448
-41% -$675 ﹤0.01% 2110
2025
Q4 		$1.81K Hold
1,084
– – ﹤0.01% 2063
2025
Q3 		$2.18K Buy
+1,084
New +$2.32K ﹤0.01% 2354

Other funds holding MNTK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BBA
Baader Bank Aktiengesellschaft Unterschleissheim, Germany $1.33B AUM 47.35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $521B AUM 51.41% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Optiver Holding's MNTK Position: Q2 2026 in Review

Optiver Holding reduced its Montauk Renewables (MNTK) stake by 99% in Q2 2026, selling an estimated $935 and leaving 4 shares worth $6. The position accounts for ﹤0.01% of the portfolio, ranked #2742.

Optiver Holding first reported a position in MNTK in Q3 2025 and has held it in 4 quarters since. The position peaked at $2.18K in Q3 2025. 91 funds tracked by Wall St. Rank hold MNTK as of Q2 2026.

  • Optiver Holding held 4 shares of Montauk Renewables worth $6 as of Q2 2026.
  • Optiver Holding sold 632 Montauk Renewables shares in Q2 2026, an estimated $935.
  • Montauk Renewables made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #2742 holding.
  • Optiver Holding first reported a position in Montauk Renewables in Q3 2025 and has held it in 4 quarters since.
  • Optiver Holding's Montauk Renewables position peaked at $2.18K in Q3 2025.
  • 91 funds tracked by Wall St. Rank held Montauk Renewables as of Q2 2026.

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