Warren Buffett's Berkshire Hathaway has sold its remaining stake of over six percent in Constellation Energy, with most of it going to a British investment bank.

In an SEC filing, Berkshire's MidAmerican Energy Holdings discloses a series of sales, including the sale of almost 11 million shares today (Monday) at $27.25 each to Barclays Capital.  The rest of the shares listed in today's filing were sold on the open market over the past two weeks.

Current price:

Berkshire got over 20 million shares, a 10 percent stake, of Constellation in late December as a break-up fee.  Constellation had walked away from its September merger pact with MidAmerican to take a sweeter offer from France's ECF.

Berkshire has been selling chunks of the shares since the beginning of this year.  Its most recent filing in mid-May showed a 6.3 percent stake, about 12.5 million shares.

Current Berkshire stock prices:

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