Endava's latest business update has caused investors to rerate its valuation dramatically.Endava (DAVA 5.28%) stock got hit with big sell-offs over the last week of trading. The company's share price fell 29.5% in a stretch of trading that saw the S&P 500 rise roughly 0.1% and the Nasdaq Composite decline 0.5%.Endava's big sell-off this week stemmed from the publication of its results for the first quarter of its 2026 fiscal year -- a period that ended Sept. 30. The company published its Q1 numbers on Nov. ...