Several years ago, a paper titled Quantifying Trading Behavior in Financial Markets Using Google Trends was published in Scientific Reports. This paper asked this question: "Is it possible to predict efficient trading strategies based upon the frequency of certain words in Google searches?"

The authors went through a number of interesting steps involved in gathering data and performing analyses. They derived a set of financial keywords from the Financial Times website that they thought were good words for examining patterns of search for financial information.

With this, they built a robust set of keywords using Google Sets (which is now defunct). Using those keywords, they collected Google Trends data on those words over a period of years and defined a trading execution plan to buy or sell based upon the changes in the search history on all of their terms. They ran the strategies for all the keywords and ranked the value of their investments for each...