Warren Buffett could be building a secret position

Warren Buffett during an interview with CNBC's Becky Quick on February 24, 2020.
Gerry Miller | CNBC

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Warren Buffett's Berkshire Hathaway could be scooping up shares of a certain company in secret.

The conglomerate released its quarterly 13F regulatory filing Monday evening, and there was a line included in the footnote — "Confidential information has been omitted from the public Form 13F report."