22.08.201720:56:00UTC+00Berkshire Hathaway Reach Historic High as S&P Affirms Rating

Shares of Warren Buffett's Berkshire Hathaway scaled new levels on Tuesday after S&P Global Ratings affirmed its AA rating and reported that the firm is no longer under threat of a credit rating downgrade.

According to FactSet, Berkshire A shares reached $270,960 while B shares climbed to $180.61, both record highs.

S&P also affirmed the company's stable outlook. The Buffett's investment arm had been on review since July, after offering $9 billion in cash for Energy Future Holdings' Oncor. But the bidding war for the power transmission operation, was won by Sempra Energy with a $9.45 billion bid. Buffett has been competing with Elliott Management's Paul Singer.

Energy Future Holdings ended the Berkshire deal on Monday, with Berkshire negotiating a $270 million deal break up fee. If the deal was sealed, Oncor would have been under Berkshire Hathaway Energy.

In a statement, Berkshire expressed its disappointment that the deal to acquire Oncor has been junked. But they also voiced their gratefulness for the solid support and backing from Texas investors.