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We’ve had the opportunity to analyze thousands of stocks over the years. Some of these stocks have been easy to understand and invest in, while others have been more challenging. For our idea sourcing process we automatically scrub out foreign entities as an example of “too hard” labeling and only grant exceptions to a small few to analyze further for portfolio consideration.

Warren Buffett and Charlie Munger have a three-bucket approach to investing: "in," "out," and "too hard." The "too hard" pile is a collection of investments that they do not understand well enough or that they believe are too risky.