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John Overdeck’s Amplitude AMPL Stock Holding History

John Overdeck’s Portfolio AMPL Stock Details AMPL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.18M Sell
416,224
-275,437
-40% -$1.9M ﹤0.01% 2565
2026
Q1 		$4.72M Sell
691,661
-349,613
-34% -$2.89M ﹤0.01% 2031
2025
Q4 		$12.1M Buy
1,041,274
+345,411
+50% +$3.63M 0.02% 1002
2025
Q3 		$7.46M Buy
695,863
+223,585
+47% +$2.65M 0.01% 1149
2025
Q2 		$5.86M Buy
+472,278
New +$5.11M 0.01% 1133
2024
Q1 		– Sell
-68,752
Closed -$875K – 3010
2023
Q4 		$875K Buy
+68,752
New +$763K ﹤0.01% 2156
2023
Q1 		– Sell
-54,910
Closed -$663K – 2939
2022
Q4 		$663K Buy
+54,910
New +$778K ﹤0.01% 1898

Other funds holding AMPL

Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
SUT
SC US (TTGP) Menlo Park, California $31.9B AUM 28.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
TI
Trigran Investments Northbrook, Illinois $545M AUM 56.2% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return

John Overdeck's AMPL Position: Q2 2026 in Review

John Overdeck reduced its Amplitude (AMPL) stake by 40% in Q2 2026, selling an estimated $1.9M and leaving 416,224 shares worth $3.18M. The position accounts for ﹤0.01% of the portfolio, ranked #2565.

John Overdeck first reported a position in AMPL in Q4 2022 and has held it in 7 quarters since. The position peaked at $12.1M in Q4 2025. 201 funds tracked by Wall St. Rank hold AMPL as of Q2 2026.

  • John Overdeck held 416,224 shares of Amplitude worth $3.18M as of Q2 2026.
  • John Overdeck sold 275,437 Amplitude shares in Q2 2026, an estimated $1.9M.
  • Amplitude made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #2565 holding.
  • John Overdeck first reported a position in Amplitude in Q4 2022 and has held it in 7 quarters since.
  • John Overdeck's Amplitude position peaked at $12.1M in Q4 2025.
  • 201 funds tracked by Wall St. Rank held Amplitude as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.