Below updates a previous chart we posted that breaks up the day into time segments (all times EDT) and plots net points for each period.  Since the January 2010 highs, the first hour is where most of the losses have occurred, even during the most recent upswing.  Since the February low, each other period in the rest of the trading day has been net profitable, though the closing hour the least so.  The 1:30 to 3:00 pm time of day has been the most profitable intraday period for longs since the 2009 rally began.

Looking farther back to 2001, we can see glean some interesting information.  The first hour of trading was consistently profitable beginning late 2003 during the last bull market.  It posted its high in July 2007, three months before equities actually topped.  It also bottomed concurrently with the markets in March 2009.  Similar to 2003, it was unable to trend up for most of 2010, but took off late in the year.  As previously noted, it has since retreated and we believe will need to start turning profitable if the January highs are to be taken out.

The only other time period that was consistently profitable during the 2003 to 2007 bull run was the overnight gap.  If it were to break its current trend line, that would be a very bearish sign.  What also emerges is that, contrary to popular believe, a profitable closing hour is not necessary to sustain a bull market, but may be necessary to start one.  The closing hour’s high was put in January 2004 and trended down thereafter.  The closing hour’s high in the current 2009 rally was established in September.  It may well be that smart money now trades at the open.

Accordingly, if we start seeing overnight gap-ups and profitable first hours, things may have turned around for equities.  If not, we’ll probably see lower prices in March.