The final rule, due out next week, may affect up to 18 percent of revenue at the five largest Wall Street firms.

Slack borrowing demand and tighter lending standards lead to imbalance.

Slack borrowing demand and tighter lending standards lead to imbalance.

Potential of offering fund to retail investors on the drawing board

Potential of offering fund to retail investors on the drawing board

Bank brought 5% of corporate bonds sold this year, up from 3.6% in 2009.

Bank brought 5% of corporate bonds sold this year, up from 3.6% in 2009.

Stocks and bonds move higher after Moodys cuts its ratings on 15 global banks.