Mr. Ballmer's name, by contrast, rarely surfaced in the e-mail evidence.
Lawyers have sought e-mail evidence from banks, which have generally refused to comply.
Many were dismissed by arbitrators because of the lack of e-mail evidence.
Investors will seize on the e-mail evidence to take their claims for compensation to arbitration.
That has now been postponed after the announced discovery of additional e-mail evidence.
A key editor's computer equipment was destroyed, and e-mail evidence was lost.
Regulators, relying on e-mail evidence, claim that four traders at Barclays manipulated energy prices to profit on swap contracts.
On Thursday, a prosecutor showed the jury e-mail evidence to suggest that Mr. Gupta harbored affection for Mr. Rajaratnam.
But the case was thrown out when undisclosed e-mail evidence held by Virgin came to light.
The Scheindlin opinion, lawyers say, will be a powerful new weapon in their continuing attempts to extract fresh e-mail evidence from the investment banks.
It says, in the startlingly routine language of a forwarded office e-mail, EVIDENCE OF UNCHECKED TORTURE WAS NOTED IN THE IRAQI POLICE STATION IN HUSAYBAH, IZ.
