The main point of the article: that all stock prices are artificial, and so there is no such thing as market manipulation, is wrong. Stock prices reflect the e

The main point of the article: that all stock prices are artificial, and so there is no such thing as market manipulation, is wrong. Stock prices reflect the expected future dividends of a stock given current information. If a person intentionally gives wrong or misleading information to the public, and this results in shift in the stock price, then this could be market manipulation. The author is correct in stating that it is hard to distinguish a person giving their honest opinion about a stock they own, and market manipulation. However, that doesn't mean that the concept of market manipulation is ill-defined.