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Sunriver Management’s Amplitude AMPL Stock Holding History

Sunriver Management’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
2025
Q3 		– Sell
-3,339,327
Closed -$41.4M – 22
2025
Q2 		$41.4M Sell
3,339,327
-511,601
-13% -$5.53M 4.44% 13
2025
Q1 		$39.2M Buy
3,850,928
+78,120
+2% +$923K 4.84% 10
2024
Q4 		$39.8M Buy
3,772,808
+737,600
+24% +$7.38M 4.76% 10
2024
Q3 		$27.2M Buy
3,035,208
+1,820,387
+150% +$15.5M 3.35% 16
2024
Q2 		$10.8M Sell
1,214,821
-2,112,764
-63% -$19.8M 1.37% 20
2024
Q1 		$36.2M Buy
3,327,585
+1,084,702
+48% +$13.3M 4.73% 12
2023
Q4 		$28.5M Buy
2,242,883
+493,046
+28% +$5.47M 4.47% 12
2023
Q3 		$20.2M Buy
+1,749,837
New +$20.2M 3.83% 13

Other funds holding AMPL

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
SUT
SC US (TTGP) Menlo Park, California $9.25B AUM 20.49% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Sunriver Management's AMPL Position: Q3 2025 in Review

Sunriver Management sold out of Amplitude (AMPL) in Q3 2025, closing a stake of 3,339,327 shares — an estimated $41.4M sold.

Sunriver Management first reported a position in AMPL in Q3 2023 and held it in 8 quarters. The position peaked at $41.4M in Q2 2025. 203 funds tracked by Wall St. Rank hold AMPL as of Q3 2025.

  • Sunriver Management reported no remaining Amplitude position as of Q3 2025 after selling out during the quarter.
  • Sunriver Management sold 3,339,327 Amplitude shares in Q3 2025, an estimated $41.4M.
  • Sunriver Management first reported a position in Amplitude in Q3 2023 and held it in 8 quarters.
  • Sunriver Management's Amplitude position peaked at $41.4M in Q2 2025.
  • 203 funds tracked by Wall St. Rank held Amplitude as of Q3 2025.

Based on Sunriver Management's 13F filing for Q3 2025, filed 13 Nov 2025.