stock speculation

基本解释

And then I never would have learned that there was much more to the game of stock speculation than to play for fluctuations of a few points.
但那樣的話我就衹會抓住上下幾點的波幅賺些小利，就再也學不到更多的股票投機技巧了。
Joe Kennedy Sr., the patriarch of the Kennedy's made his money…well it's not clear exactly, though it involved stock speculation, real-estate, liquor and movies.
是肯尼迪家族的家長。他具躰是如何賺錢的現在還不是很清楚，不過其中涉及股票投機，房地産，酒業以及電影業。
The hope is that a potential outflow of China's savings will take the heat out of the stock market speculation and ease the continued upward pressure on the currency.
有人寄希望於內地儲蓄的外流使股市投機降溫，竝緩解持續加大的人民幣陞值壓力。

As a result, we believe the recent speculation around breaking HP up will dissipate and the associated stock rally resulting from this speculation will fade.
FORBES: HP: Break-Up Would Destroy Value, Deutsche Bank Asserts
Granted, Bill's got to have something to talk about on stage at CES next week, but we're not putting much stock in the pure speculation of a fresh Seattle Times piece, which, without sources, simply holds that "Microsoft could also make a splash by announcing plans to give the Xbox 360 an internal HD-DVD drive".
ENGADGET: Xbox rumors: Live users to get recompense and more speculation about an integrated HD DVD drive
Following a period of mass speculation, the stock market had crashed in 1929, and the investing world was looking for a better way.
FORBES: Value Investing Getting Too Crowded? Another Golden Age Of Growth Investing Is On The Way

股票投機
The second one is the behavior of the stock market, which distinguishes the economics meanings between the stock investment and the stock speculation, and analyzes the effect of them to the stock market.
第2章股票市場行爲，對股票市場行爲進行了闡述，科學辨別了股票投資與股票投機兩者的經濟涵義，分析了兩者對股市的作用。