Stock futures declined Monday after the S&P 500 closed higher on Friday for the ninth session in a row, the index's longest streak of daily gains since November 2004.

These stocks were poised to make moves Monday:

Berkshire Hathaway's shares were down 2% in premarket trading after Warren Buffett said he would be stepping down as CEO of the conglomerate at the end of the year, with his handpicked successor, Greg Abel, taking the helm. Buffett's bombshell announcement at the company's annual meeting Saturday followed the release of Berkshire's earnings report, in which the company reported first-quarter operating profit of $9.6 billion, down 14% from a year earlier, on reduced insurance underwriting profits and currency losses related to the company's non-dollar debt.

Berkshire's cash pile grew to $348 billion at the end of the first quarter, but Buffett, when asked at the annual meeting why he hasn't deployed it yet, suggested the right opportunities haven't come along.

Regarding tariffs, Buffett said the main thing was to "not use trade as a weapon. There's no question that trade can be an act of war and I think it's led to bad things, just the attitudes that's brought out in the United States. We should be looking to trade with the rest of the world, and we should do what we do best, and they should do what they do best."

Microsoft will kick off Monday as the largest U.S. company by market capitalization, surpassing Apple on Friday. Microsoft's market cap of $3.24 trillion topped Apple's $3.07 trillion, according to Dow Jones Market Data. The software company gained $322.8 billion in market cap last week after strong fiscal third-quarter earnings and growth in its Azure cloud-computing business week. The stock fell 1% in premarket trading.

Apple's market cap, meanwhile, declined $58.7 billion last week. While the iPhone maker's quarterly earnings topped analysts' estimates, the stock slumped following services revenue that missed expectations and weakness in Greater China. Apple shares were down 0.8% in premarket trading.

Netflix fell 4%, Walt Disney declined 2%, and Comcast fell 0.8% after President Donald Trump, in a Truth Social post Sunday, said he authorized a 100% tariff on films produced overseas.

Palantir Technologies Inc. up 0.1% in premarket trading. Analysts expect the data analytics company to report first-quarter adjusted earnings of 13 cents a share on revenue of $862.3 million, up 36% from a year earlier. Palantir shares, coming into Monday, have risen 64% this year.