Wall Street traders mine tweets for investing clues. The new gold rush for Wall Street dealers ... mining social networks for emotional trends. To gain a trading edge, Wall Street traders are now using clever computer programs to monitor and decode the words, opinions, rants and even keyboard-generated smiley faces posted on social-media sites like Twitter.com. Human emotions, such as greed and fear, have always moved markets. Money can be made betting with or against the crowd, so measuring the mood of the masses online can be just as valuable as tracking price-to-earnings ratios, corporate profits and interest rates. The new trend on Wall Street for deciphering if the populace and investing public is in a positive or negative state of mind is computer-driven text analysis of the millions of real-time tweets and posts that flood social-networking sites.
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