If you’re having a bad week, consider that Warren Buffett has lost $2 billion and it’s only Tuesday. Buffett is known for shunning the quick buck and focusing on the long-term performance of his investments. He’d best not change that this week. His Berkshire Hathaway investment house holds big pieces of Coke and IBM, both of which have taken a drubbing in the past two days, CNN Money reported. He took a $1b hit on Coke, which fizzled 6% on Tuesday after the company reported earnings that didn’t live up to expectations. Even worse, Coke said it doesn’t expect a much better 2015.