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Ardsley Advisory Partners’s Amplitude AMPL Stock Holding History

Ardsley Advisory Partners’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
-210,000
Closed -$2.6M – 138
2025
Q2 		$2.6M Buy
210,000
+75,000
+56% +$811K 0.34% 72
2025
Q1 		$1.38M Buy
+135,000
New +$1.59M 0.26% 90

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

Ardsley Advisory Partners's AMPL Position: Q3 2025 in Review

Ardsley Advisory Partners sold out of Amplitude (AMPL) in Q3 2025, closing a stake of 210,000 shares — an estimated $2.6M sold.

Ardsley Advisory Partners first reported a position in AMPL in Q1 2025 and held it in 2 quarters. The position peaked at $2.6M in Q2 2025. 203 funds tracked by Wall St. Rank hold AMPL as of Q3 2025.

  • Ardsley Advisory Partners reported no remaining Amplitude position as of Q3 2025 after selling out during the quarter.
  • Ardsley Advisory Partners sold 210,000 Amplitude shares in Q3 2025, an estimated $2.6M.
  • Ardsley Advisory Partners first reported a position in Amplitude in Q1 2025 and held it in 2 quarters.
  • Ardsley Advisory Partners's Amplitude position peaked at $2.6M in Q2 2025.
  • 203 funds tracked by Wall St. Rank held Amplitude as of Q3 2025.

Based on Ardsley Advisory Partners's 13F filing for Q3 2025, filed 14 Nov 2025.