Profunds index and sector trading

[was Steve]

great post. what rules are there in calculating the likely number of days in a move such as the next leg down for the spx?

spx/dow/nya finally cracked adn actually sold off worse than the ndx a few days in a row in percentage terms. doing some catching up since they were coming off new highs and ndx had been in a downtrend for a month already. i can see that continuing in the coming weeks and may divert some of my shorting funds to the dow or spx from the ndx/rut.