Investor sentiment, sometimes also called market sentiment, typically relates to the stock market’s “attitude” towards specific securities, industries, or overall market conditions (bullish, bearish, or neutral. While of limited importance to a buy-and-hold investor, investor sentiment can be an effective tool if you decide to live in the fast lane by adopting a day or Swing trading strategy.
In the short-term, investor sentiment can affect market prices to a large degree. There are even companies, like Chartcraft, that publish “investor sentiment indexes” to indicate the level, positive or negative, of investor and market feelings.

