Secretive Chinese bitcoin mining company may have made as much money as Nvidia last year

Based on conservative estimates of gross margin of 75 percent and operating margin of 65 percent, Bernstein analysts calculate that Beijing-based Bitmain made $3 billion to $4 billion in operating profits in 2017.

In contrast, Nvidia's operation profit was $3 billion during the same period, according to Bernstein's U.S. semiconductor team estimates.
Bernstein's analysis also indicated that "Bitmain shrewdly adjusts the prices of miners according to bitcoin prices."