According to Yahoo!Finance, “Parker Drilling Company (PKD) provides contract drilling and drilling-related services, and rental tools and services to the energy industry. It operates through two business lines, Drilling Services and Rental Tools Services.”
The Study of Failure
"Through many years of continuing mistakes, errors and blows to my ego, I’ve learned the truth of the market adage which states,'The market can do anything.' (Russell, Richard. Dow Theory Letters. September 30, 1977. Page 2.)."