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
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 $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BBA
Baader Bank Aktiengesellschaft Unterschleissheim, Germany $1.28B AUM 38.1% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Optiver Holding's MNTK Position: Q1 2026 in Review

Optiver Holding reduced its Montauk Renewables (MNTK) stake by 41% in Q1 2026, selling an estimated $675 and leaving 636 shares worth $731. The position accounts for ﹤0.01% of the portfolio, ranked #2110.

Optiver Holding first reported a position in MNTK in Q3 2025 and has held it in 3 quarters since. The position peaked at $2.18K in Q3 2025. 94 funds tracked by Wall St. Rank hold MNTK as of Q1 2026.

  • Optiver Holding held 636 shares of Montauk Renewables worth $731 as of Q1 2026.
  • Optiver Holding sold 448 Montauk Renewables shares in Q1 2026, an estimated $675.
  • Montauk Renewables made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #2110 holding.
  • Optiver Holding first reported a position in Montauk Renewables in Q3 2025 and has held it in 3 quarters since.
  • Optiver Holding's Montauk Renewables position peaked at $2.18K in Q3 2025.
  • 94 funds tracked by Wall St. Rank held Montauk Renewables as of Q1 2026.

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