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John Overdeck’s Montauk Renewables MNTK Stock Holding History

John Overdeck’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 		– Sell
-23,215
Closed -$38.8K – 4796
2025
Q4 		$38.8K Buy
23,215
+6,260
+37% +$12K ﹤0.01% 3960
2025
Q3 		$34.1K Buy
+16,955
New +$36.3K ﹤0.01% 3561
2023
Q2 		– Sell
-23,272
Closed -$183K – 3171
2023
Q1 		$183K Buy
+23,272
New +$236K ﹤0.01% 2578
2022
Q2 		– Sell
-12,426
Closed -$139K – 2785
2022
Q1 		$139K Buy
+12,426
New +$130K ﹤0.01% 2392

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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 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

John Overdeck's MNTK Position: Q1 2026 in Review

John Overdeck sold out of Montauk Renewables (MNTK) in Q1 2026, closing a stake of 23,215 shares — an estimated $38.8K sold.

John Overdeck first reported a position in MNTK in Q1 2022 and held it in 4 quarters. The position peaked at $183K in Q1 2023. 94 funds tracked by Wall St. Rank hold MNTK as of Q1 2026.

  • John Overdeck reported no remaining Montauk Renewables position as of Q1 2026 after selling out during the quarter.
  • John Overdeck sold 23,215 Montauk Renewables shares in Q1 2026, an estimated $38.8K.
  • John Overdeck first reported a position in Montauk Renewables in Q1 2022 and held it in 4 quarters.
  • John Overdeck's Montauk Renewables position peaked at $183K in Q1 2023.
  • 94 funds tracked by Wall St. Rank held Montauk Renewables as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.