Shares of Amplitude (AMPL -16.13%) fell 16.3% on Wednesday after the digital-analytics platform provider announced mixed quarterly results and disappointing forward guidance. Amplitude's "strong" quarter just wasn't enough Amplitude's fourth-quarter 2023 revenue grew 9% year over year to $71.4 million, translating to adjusted (non- GAAP) net income of$0.04 per share. Analysts, on average, were only expecting earnings of $0.03 per share, but on slightly higher revenue. The company's number of paying custome ...