Generally the Direction: the direction is changed to a bearish trend especially if stabilized under zone 19,810 and 19,605 by closing the 4H candle.
Downtrend Side: the price reversed strongly toward down due to Nasdaq's direction being heavily influenced by earnings reports from technology companies, thus failing till under the support of 19,995, as long as trade under this level the negative pressure will be active to 19,810, under it will touch 19,605, crossing this two line will confirm the bearish trend.
Uptrend Side: to be a bullish trend the price should stay by closing the 1H candle above 20,200.
Tendency Keys: 19,810 and 19,605