Warren Buffett's position in Delta Air Lines is currently worth $4.79B. That's 1.31% of their equity portfolio (14th largest holding). The investor owns 8.84% of the outstanding Delta Air Lines stock. The first Delta Air Lines trade was made in Q3 2016. Since then Warren Buffett bought shares ten more times and sold shares on four occasions. The stake costed the investor $3.99B, netting the investor a gain of 20% so far.