DUOL has two choices

3 tops or a Rule of 3
Has problem with braking $164 level which is a sign of weakness.

Look for more weakness. Confirmation when it will open under 8EMA and starts to brake down under 21EMA

RSI high
SMI high
MACD bars down/MA slowly curling down.

Ideal Price Target in OPT zone.

Do not see any news around it. Lack of catalyst.