Why is Dynatrace, Inc. (DT) stock moving?

Dynatrace has sold off sharply into its earnings report. The stock fell from about $64 in late October to a $55.13 close on Nov 2. That is roughly a 14% drop in about a week, and the last two sessions came on heavier volume (108.8K and 125.7K shares, against a typical 60-80K). The stock is now well below its 52-week high of $66.30, though still far above the low of $31.64. Fundamentals look solid: trailing revenue is about $2.10B, up roughly 18%. Forward P/E is about 29, and consensus is 'Buy' with an average target near $65.6, about 17% above the recent price. Recent target raises from Cantor and Goldman show that analyst sentiment had been improving. The Nov 3 earnings release is the main near-term catalyst. The pre-earnings drop may have already priced in some caution, so the reaction could be large in either direction. The recent break below the $60-61 support area makes the technical picture weak. The news coverage available is thin and the earnings outcome is unknown, so confidence is limited.