Mariner
AMPL icon

Mariner’s Amplitude AMPL Stock Holding History

Mariner’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 		$230K Sell
30,025
-5,993
-17% -$41.3K ﹤0.01% 3042
2026
Q1 		$246K Buy
36,018
+1,106
+3% +$9.13K ﹤0.01% 3037
2025
Q4 		$405K Buy
34,912
+14,237
+69% +$150K ﹤0.01% 2606
2025
Q3 		$222K Buy
+20,675
New +$245K ﹤0.01% 3088

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

Mariner's AMPL Position: Q2 2026 in Review

Mariner reduced its Amplitude (AMPL) stake by 17% in Q2 2026, selling an estimated $41.3K and leaving 30,025 shares worth $230K. The position accounts for ﹤0.01% of the portfolio, ranked #3042.

Mariner first reported a position in AMPL in Q3 2025 and has held it in 4 quarters since. The position peaked at $405K in Q4 2025. 203 funds tracked by Wall St. Rank hold AMPL as of Q2 2026.

  • Mariner held 30,025 shares of Amplitude worth $230K as of Q2 2026.
  • Mariner sold 5,993 Amplitude shares in Q2 2026, an estimated $41.3K.
  • Amplitude made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3042 holding.
  • Mariner first reported a position in Amplitude in Q3 2025 and has held it in 4 quarters since.
  • Mariner's Amplitude position peaked at $405K in Q4 2025.
  • 203 funds tracked by Wall St. Rank held Amplitude as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.