Key TakeawaysSnowflake shares popped 20% in extended trading Wednesday after the data analytics software maker reported better-than-expected earnings and boosted its revenue outlook. Between September and October, the stock carved out a double bottom, a classic chart pattern that indicates a bullish reversal.Investors should watch key overhead price levels on Snowflake's chart around $145, $165, $182, and $200, while monitoring an important support area near $125. Snowflake (SNOW) shares popped 20% in exten ...