The most significant insider transaction on today's list comes from a 13D filing by Jeff Ubben’s Value Act.

The hedge fund revealed an ownership stake of...

The largest insider buy on today’s list is a Form 4 filing by the executive chairman of Energy Transfer LP $ET, who revealed a purchase worth $12.6 million.

Director Matthew R. Cohler revealed an insider buy worth $991,484 in KKR & Co $KKR...

George L. Ball, the chief financial officer at Parsons Corporation $PSN, filed a Form 4 revealing a purchase of 35,000 shares of PSN.

That’s equivalent to $1,452,500 worth of his company's stock.

Today’s most significant insider transaction report is another Form 4 filing by Warren Buffett’s Berkshire Hathaway $BRK.A.

Buffet continues to increase his position in Occidental Petroleum $OXY, as he just reported an additional purchase,...

The largest insider buy on today’s list is a Form 4 filing by the president and CEO of TransUnion $TRU, who revealed a purchase of $1.9 million in the credit reporting agency.

The chief commercial officer of First Solar $FSLR reported a...

The most significant insider transaction on today’s list is a Form 4 filing for Pinterest $PINS.

We wrote about PINS on July 15, when Elliott Management announced a large activist...

Insiders are finally buying into the summer rally. We haven’t seen this much action on our Hot List in months!

The largest insider transaction on today’s list is a Form 4 filing by the Chairman and CEO of American Assets Trust $AAT, with a...

B. Riley Financial $RILY Director Randall Paulson reported another purchase of stock in the asset manager. His last purchase was in early May.

The largest insider transaction on today's list is a Form 4 filing by Artal Group, which reported a purchase of roughly $40.4 million in Lexicon Pharmaceuticals $LXRX.

Artal Group now owns 83,835,950 LXRX shares, representing a roughly 47.5%...

CD&R Investment Associates disclosed the purchase of approximately $6 million worth of Beacon Roofing Supply $BECN in a Form 4 on Friday.

The firm now owns 24,348,048 shares, which represents a roughly 35% ownership stake in the mid-cap...

Insiders are buying up regional banks this week.

Independent Director Robert Stallings reported an additional  purchase of $1.2 million in Texas Capital Bancshares $TCB, as he continues to build his position.

The president and CEO of Heritage-Crystal Clean $HCCI reported a purchase of 150,000 shares, roughly equivalent to $4,000,000 worth of stock.

The only 13D on our list today was filed by Inclusive Capital Partners LP.

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...

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...

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...

Last night, the Wall Street Journal reported that Paul Singer’s Elliott Management is now the largest investor in Pinterest $...

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...

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.