Warren Buffett is considered one of the most successful investors ever with a current net worth over $100 billion. He became a disciple of renowned investor Benjamin Graham while studying at Columbia, later starting his own investment partnerships in the 1950s. His defining investment was acquiring New England textile firm Berkshire Hathaway in 1965, using it as a vehicle to purchase stocks and acquire companies via equity stakes.As Buffett evolved from Graham's "cigar butt" investing approach to focusing on high quality companies, Berkshire itself transformed into a powerhouse conglomerate...