Berkshire Hathaway (BRK-B)

On Saturday, longtime Berkshire Hathaway (BRK-B, BRK-A) CEO Warren Buffett said he plans to recommend to the company's board that vice-chairman Greg Abel take over at the end of the year. Abel was named Buffett's successor back in 2021.

The announcement came at the end of another annual meeting that saw Buffett warn on Trump's expansive tariff plans and talk down this year's market volatility, among other things.

As for where this leaves Buffett and Berkshire, Buffett said he has no plans to sell Berkshire stock as a result of the change and won't be far away, if needed.

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"I would still hang around, and could conceivably be useful in a few cases, but the final word would be what Greg said, in operations, in capital deployment, whatever it might be," Buffett said.

On Friday, Berkshire Hathaway stock closed at a record high. Shares have gained over 17% this year against a 3% drop for the S&P 500 (^GSPC). In pre-market on Monday futures were pointing around 1.8% lower.

How investors react to this weekend's news will not only shape the market discussion in the week ahead, but given Berkshire is the seventh-largest company in the S&P 500 and sports a market cap north of $1.1tn (£828.7bn), how the stock trades could influence the broader market, too.

Palantir (PLTR)

Palantir (PLTR) stock wavered between gains and losses in premarket trade on Monday as investors gear up for the AI software company's latest earnings report.

Analysts are expecting first-quarter adjusted earnings at 13 cents-a-share, with revenue of $862.3m. That's an increase of 36% from the previous year. The company's share price is up more than 450% year-on-year.

Earnings are due after the bell later on Monday.

Netflix (NFLX)

Streaming giant Netflix (NFLX) saw its stock price dip more than 4.5% in premarket trade on Monday following a plan laid out by US president Donald Trump to put a 100% tariff on movies "produced in foreign lands".

The move is an attempt to draw filmmakers back to the US, amid increasingly tempting offers by overseas nations.

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“WE WANT MOVIES MADE IN AMERICA, AGAIN!” Trump wrote in a Truth Social post, which also said he had authorised the commerce department and the US trade representative to immediately begin instituting such a tariff.

It's unclear whether the tariff will apply to US filmmakers making movies abroad, or streaming giants with operations outside the US. It's also unclear how the tariff will be calculated.