- 90% of the S&P 500 companies that filed quarterly earnings last week beat Wall Street's targets.
- That's the index's best start to an earnings season since at least 2012, Bank of America said.
- The robust profits came despite investors' fears that banking turmoil will fuel a credit crunch.
S&P 500 companies are off to their best start to an earnings season in over a decade, despite lingering fears that last month's banking turmoil will lead to a credit crunch that chips away at corporate profits.