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Such a precipitous increase in the value of U.S. equities has stirred up the usual cacophony of equity-bears screaming “bubble!” “Bubble” is a popular term, but, as it turns out, is rather ill-defined and fuzzy.

It looks like it’s Warren Buffett’s turn to say, “I told you so.” Late last year, the Berkshire Hathaway CEO was busy selling stocks when the S&P 500 logged more than 50 record closes, leading many market observers to scratch their heads.

Warren Buffett has been a fan of the banking industry for many years. Out of the roughly 40 stocks in Berkshire Hathaway's (NYSE: BRK.A)(NYSE: BRK.B) closely watched portfolio, six of them are banks -- including two of the three largest positions.

Discover how Canadian investors can take advantage of Warren Buffett's latest stock pick with strategies using Qtrade, TD Direct Investing. From direct trading to automated investments, find out how t

Whenever Wall Street authoritative figures, such as a large institution or individual investor, decide to shift a view on a specific stock or industry, retail traders can significantly benefit from attempting to reverse engineer the reasoning behind such a decision and shift.

With an estimated net worth of $155 billion, Warren Buffett is the eighth richest person in the world, according to The Bloomberg Billionaires Index. What's stunning about Buffett's wealth is he acquired it primarily through stock market investments.