Based monthly chart SBIN following trendline.
When price reaches to the trendline It bounce back extremely well.
See the Full Graph.
Based on averaging,
In 365 days - Return will be 139 %
and for 100 % return you need to wait for 216 days!!
Just My view based on the trendline analysis and previous data.
Its good time to buy.... FOR LONG TERM...... atleast 1 year or 2 year.