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.
但那样的话我就只会抓住上下几点的波幅赚些小利，就再也学不到更多的股票投机技巧了。
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.
是肯尼迪家族的家长。他具体是如何赚钱的现在还不是很清楚，不过其中涉及股票投机，房地产，酒业以及电影业。
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.
有人寄希望于内地储蓄的外流使股市投机降温，并缓解持续加大的人民币升值压力。

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

股票投机
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章股票市场行为，对股票市场行为进行了阐述，科学辨别了股票投资与股票投机两者的经济涵义，分析了两者对股市的作用。