Elliott Management, one of the largest and longest-tenured activist funds on Wall Street, is back on our list with its second big splash in two weeks.

Earlier this month, Elliott Management became the largest shareholder in Pinterest $PINS with a roughly 9% stake.

The largest insider transaction on today’s list is a Form 4 filing by Director Lorence H. Kim, who reported a purchase of roughly $1 million in Revolution Medicines $RVMD.

We’ve seen very little insider activity the past few weeks and today is no different, as we have just a single Form 4 on our Hot List.

This lack of interest is reflected in the ratio of insider sells to insider buys, which just hit its highest level since early 2021.

Immunocore Holdings $IMCR appears on our list for the second day in a row, as General Atlantic LP filed a 13D revealing an ownership stake of 11.50% in the biotechnology company.

The largest insider transaction on today’s Hot List is a Form 4 filing by Nimish P. Shah, who reported an additional purchase of roughly $1.4 million of Tricida $TCDA.

The only 13D on our list today was filed by Baker Bros Advisors LP.

There’s been a noticeable lack of Hot List activity, as insiders seem to be sitting out the latest rally.

Today is no different, as we have a single Form 4 and one 13G.

Warren Buffett filed his latest Form 4 yesterday, as Berkshire Hathaway $BRK continues to accumulate shares of Occidental Petroleum $OXY.

The additional 1.94 million shares leaves him with an ownership percentage just shy of 20%.

Director David S. Taylor of Delta Air Lines $DAL revealed a purchase of 10,000 shares in the airline company, valued at just under $300,000.

Meritage Group LP filed a 13G revealing an ownership stake of 5.70% in the cloud-based business management platform Coupa Software $COUP.

Last night, the Wall Street Journal reported that Paul Singer’s Elliott Management is now the largest investor in Pinterest $PINS, having built a stake greater than 9%.

While the hedge fund hasn’t filed anything with the SEC yet, it has apparently been in discussions with the social media company for the past several weeks.

We should know more soon.

Warren Buffett continues to increase his position in the oil and gas exploration and chemical manufacturing company Occidental Petroleum $OXY.

Yesterday, Berkshire Hathaway $BRK.A filed another Form 4, revealing roughly $250 million of new purchases.

The largest insider transaction on today’s list is a Form 4 filing by famed tech investor Bill Gurley.

The Massachusetts-based hedge fund Wellington Management Company has been active, as it filed three separate 13Gs yesterday.

The filings revealed passive ownership stakes of about 10% in Whiting Petroleum $WLL and Steven Madden $SHOO.