The charts, below, for Blackstone Group (BX) look weak and this dovetails with the downgrade by TheStreet Ratings.
It is not hard to see the peak in BX, chart above. Prices have been moving down since May. A sharply lower OBV line suggests that there has been some significant liquidation of longs in BX. The math used to create the Moving Average Convergence Divergence (MACD) oscillator and the two moving averages we favor is telling us that we are in a downtrend.
This longer-term chart of BX, above, is not encouraging as prices have made new lows for the move down. BX has broken support from the lows of 2014. The On-Balance-Volume line peaked in May on this time frame. The MACD oscillator on this timeframe has been in a sell for months. $20 is next support.