This is my understanding of where we are, using the S&P
1 - Weekly Chart - Momentum is clearly lessening,
2 - Daily Chart - Again we can see from having to fan the 2 red trend lines that momentum to the upside is lessening.
In the A-C area, we have a healthy uptrend, the uptrend is broken in the C-D area however bulls would probably be calling this a normal correction, as volume is relatively low in this area.
Price reverses at D, slightly above the previous swing low, this too would still be bullish as we have a higher low.
Bulls hit there first problem area in the D-E zone where price makes a lower high and this should be the first major warning sign for the bulls. Also worrying should be the very high volume day around the 19 September, which failed to propel price to new highs, looks like a lot of distribution is going on.
Price turns up again in the latter half of September, which forms a nice coil (blue lines). Shortly after E price falls through support in the coil.
The current question is will price hold at current levels, being the level of the swing low formed at end June.
All criticisms welcome