Major bank shares plummet
* Bank of America Corp shares fall 9.1 percent to $20.90
* Citigroup Inc shares fall 9.6 percent to $11.85
* Goldman Sachs Group Inc shares fall 12 percent to $95.65
* JPMorgan Chase & Co shares fall 7.8 percent to $34.90
* Merrill Lynch & Co shares fall 12.3 percent to $15.35
* Morgan Stanley shares fall 14.1 percent to $15.53
* Wachovia Corp shares fall 8.7 percent to $5.26
* Wells Fargo & Co shares fall 7.8 percent to $28.90