Thanks Rich,
I got a view of a right chart at your blog since I can not draw that at my system without correct data. As opening a put, I think it is still not a good time now as I said previous days that we would meet a period low at pm Tuesday but should open a put at end of May. (selected from Rich's blog)

Black Monday did not come as I thought last week, but fortunately the period low came at right time and people can open a call and take profit now. That is a good job for day trading. In day trading, relative position is important.

Wave c will reach 843.72

S&P index goes in standard wave style. Does a black Monday come again? In coming days, the period low target will aim to 857.53 or 843.72 at 2:00pm May 5 if Monday is black.

Wave Count

Got inspiration from Bob, I think the extended 1st wave may be end on Mar 18 and 2nd wave end on Mar 30 as a running flat corrective. The 4th wave from Apr 17 to Apr 21 seems as a single wave and alternated with 2nd. The 5th wave is a ending diagonal triangle which only takes a role in 5th wave. Others,the length of 1st wave =0.618 of whole A wave as showed.