By: jackie.sauter

It looks like the city is losing another corporate headquarters with today’s announcement that Warren Buffet’s MidAmerican Energy Holdings will buy Constellation Energy Group.

Constellation was No. 117 on the Fortune 1,000, by far the biggest company in Baltimore, and the second biggest in the state, behind No. 57 Lockheed Martin.

The next biggest companies in the city are Legg Mason (No. 524) and T. Rowe Price (No. 831). In the Baltimore area, Black & Decker (No. 372), W.R. Grace (No. 657) and McCormick & Cos. Inc. (No. 689) make the list.

What — if anything — can the city and state do to stop the outflow of corporate headquarters?

ED WALDMAN, Managing Editor/Business