All charts and data below are CPI-U inflation-adjusted and with dividends reinvested. (Why?)

Total Real Returns

AMPL: Total Real Return Chart (Dividends Reinvested, Inflation Adjusted)

AMPL real return snapshot: after CPI-U inflation, AMPL returned +12.99% over the past year and +10.82% YTD, with dividends reinvested. Since Sep. 28, 2021, AMPL is down −80.18% in real purchasing-power return, or −27.66%/yr, and is currently −87.06% below its real total-return high on Nov. 9, 2021.

Data ending Mon Sep. 28, 2026

Growth of $10,000

Tue 2021-09-28💬 to Mon 2026-09-28 Overall
Return 		Exponential
Trendline
AMPL × 		−80.18%
−27.66%/yr 		−23.93%/yr
R2=0.544
Amplitude Inc NASDAQ Common Stock

Growth of $10,000 Summary

Tue 2021-09-28💬 to Mon 2026-09-28 Start
Value 		End
Value
AMPL × 		$10,000.00
2021-09-28 		$1,982.00
2026-09-28

This Year’s Performance

through 2026-09-28

  YTD YoY
AMPL × 		+10.82% +12.99%

Drawdowns

  Current
Drawdown 		Worst
Drawdown
AMPL × 		−87.06%
on 2026-09-28
from 2021-11-09 peak 		−94.47%
on 2026-04-10
from 2021-11-09 peak

Rolling Returns

Period ending Mon 2026-09-28 1 yr 2 yr 3 yr 5 yr 10 yr
AMPL × 		+12.99% +39.49%
+18.11%/yr 		+5.79%
+1.89%/yr 		−80.18%
−27.65%/yr 		—

Annual Returns

Year AMPL
2026 (YTD) +10.82%
2025 +6.90%
2024 −19.38%
2023 +1.89%
2022 −78.57%
2021 −4.97%