TTD - Hammer candlestick reversal pattern

I wanted to go over reversal candlestick patterns in down trends for symbols TTD.
TTD - Is a stock I've been following for years and recently posted a good earnings report.
On jan 7th, we had a hammer candle after a downtrend whih means a possible reversal.
The fib retracement was close enough to the most common .618 retracement level.
There was strong support there as well from the earnings gap up area of $702