RE:RE:Why is he whole sector getting clobbered today^It has nothing to do with CVE. The entire sector is out of favor. Look at US oil stocks, they've been hit badly as well.
One algo decided to short oil equities, and then the momentum algos piled on. A lot of things happen with no rhyme or reason nowadays, it's robot trading.
Oil equities have made strong gains recently, I'm sure people are taking money off the table after such a run and I'm sure stops were reached.
I wouldn't be surprised to see another leg higher tomorrow.