Shares of AmerisourceBergen are trading down 1.4% to $37.48 today on above
average volume. About 3.8 million shares have been traded today, as compared
to the 30-day average volume of 2.7 million shares. Unusually high volume
can signify a potential turning point or validate a breakout.
这个breakout是指它要大跌还是大涨?