They are generally from commodity, mining etc
It is best to avoid them.
Apart from this stocks performing quite consistently may go up fast
Being a stock market watcher is a lot like "bird watching".
Watch "long" enough, and soon you realize the difference between "normal" and "aberrations".
Stocks rise and fall for a "reason". Sometimes the reason is "bogus", and sometimes that isn't apparent for years.
Go to Yahoo Finance and check out "charts" of even the bluest of the blue chips (XOM, JNJ,T, PG) and you will see a long term stair step increase in stock price, with the occasional 2 steps forward, 3 steps back.
Stock prices "stabilizing" for a "period" of time is "normal".
