2017.12.1901:18:00UTC+00Berkshire Hathaway Shares Scale New Record High

Berkshire Hathaway's class “A” shares briefly surpassed the $300, 000 mark for the first time on Monday, as investors increase bets on expectations that Warren Buffett's conglomerate would get a big earnings boost from the GOP's proposed tax reforms.

The class A Shares rose by as much as 1.3 percent to $300, 100. The conglomerate's most expensive shares reached that milestone for the first time in the morning before reversing its gains. It settled on Monday at $299, 360, up 1.04 percent. The stock has outperformed the S&P 500 this year- gaining over 22 percent against the index's 20 percent increase.

The stock has steadily risen by almost 10 percent since November 16, when the GOP Republicans first passed its plan to reduce U.S. corporate tax rates.

The company's B shares closed trading at $199.34, which is also around 22 percent higher for the year.

With Berkshire's businesses mostly focused on the U.S. economy, the conglomerate is seen to be one of the biggest beneficiaries of U.S. tax reforms.

Analysts from KBW estimate that a reduction in the federal corporate tax to 21 percent from 35 percent could bolster Berkshire's earnings by around $2.6 billion or 15 percent in 2018.