Outside Down Weeks for S&P500 & NDX100......Crude 'leads'.

S&P500: Weekly Chart @ Close 04/05/2013

Not only the benchmark S&P500; but also the NASDAQ100 (NDX) together with Crude's ($WTIC) earlier warning signals a correction (well overdue) is likely 'upon us'.
The Transports have been the lead index on the way up, it appears to be leading the 'charge' lower as well.