Today’s most notable transaction comes via a Form 4 filing by EcoR1 Capital LLC, a biotech-focused hedge fund known for its expertise in high-growth life sciences investments.

The fund revealed a purchase of 363,369 shares of Zymeworks Inc $ZYME, equivalent to $5,321,175. EcoR1’s ownership stake in ZYME is now 22.04%.

Here’s The Hot Corner, with data from January 2, 2024:

Today’s most notable transaction comes from John W. Childs, director of Biohaven Pharmaceutical Holding Company $BHVN.

Childs bought 29,000 shares, equivalent to $1,042,393 in its latest Form 4 filing.

Here’s The Hot Corner, with data from December 31, 2024:

Happy New Year, everyone!

Today’s most notable transaction comes from Warren Buffett’s Berkshire Hathaway, which purchased an additional $15.5 million in VeriSign $VRSN shares, increasing its ownership stake to 13.80%.

This transaction reflects confidence in VeriSign’s ability to maintain its leadership in internet security and stability while benefiting from long-term digital growth trends.

Here’s The Hot Corner, with data from December 30, 2024:

Prospect Capital Corporation $PSEC CEO John F. Barry III made another splash, this time with a massive $8.58 million buy. He reported this 2,000,000 share purchase in a Form 4 filing on Friday.

When the top exec puts this kind of skin in the game, it’s time to sit up and pay attention.

Here’s The Hot Corner, with data from December 27, 2024:

Today’s standout insider activity comes with plenty to unpack.

Warren Buffett’s Berkshire Hathaway is back at it, revealing a fresh $28.5 million purchase in VeriSign $VRSN.

When Uncle Warren makes a move, it’s always worth watching.

Over at Progyny $PGNY, both the CEO and the Executive Chairman stepped in to buy their own stock.

Seeing top leadership align like this is a rare and notable signal.

Here’s The Hot Corner, with data from December 26, 2024:

Today’s standout insider activity features some intriguing moves across key players.

Director Neil de Crescenzo made waves with a Form 4 filing, snapping up 100,000 shares of CCC Intelligent Solutions Holdings $CCCS—a significant bet on the company’s future. 

Meanwhile, at Ardelyx $ARDX, director David Mott—on the board since 2009—dropped a cool $1 million on shares, a bold show of conviction.

Here’s The Hot Corner, with data from December 23, 2024:

Today’s most notable insider transaction comes via a Form 4 filing from Control Empresarial de Capitales S.A.

The firm disclosed another increase in its ownership stake in PBF Energy $PBF. They now own 28,814,998 shares, representing more than a 25% interest.

Here’s The Hot Corner, with data from December 20, 2024:

Uncle Warren is back in the buying game.

When Warren Buffett and Berkshire Hathaway start buying, it’s time to sit up and take notice. 

The Oracle of Omaha has returned to the open market with three intriguing purchases. Let’s dive into them.

First up, Occidental Petroleum $OXY. After a six-month hiatus, Buffett is back, snapping up shares. This marks the 29th Form 4 filing for OXY since he began building his position in early 2022. 

Berkshire shelled out $400 million this time, bringing Buffett’s average purchase price to $54.02. 

Here’s a chart highlighting the timing of Buffett’s $OXY purchases:

Leading today’s list is Ariel Emanuel, CEO of TKO Group Holdings $TKO, making waves with an eye-popping $77 million purchase. 

When a CEO drops this kind of cash on their own stock, it screams confidence in the company’s future.

Kenneth Courtis, independent director of Alpha Metallurgical Resources $AMR, followed suit with a hefty $2.4 million buy. Insider moves like this often hint at good things to come, or at least an upward move in the stock.

Here’s The Hot Corner, with data from December 18, 2024:

Baker Bros Advisors, renowned for their biotech expertise, increased their stake in Bicycle Therapeutics $BCYC from 19.76% to 22.90%, as disclosed in a 13D filing. 

This signals strong confidence in the company's prospects, likely tied to its innovative "Bicycles" platform for developing novel therapies. 

Given the Bakers' track record, their investment is a notable endorsement of Bicycle Therapeutics' potential. 

In essence, when the Bakers buy, biotech investors pay attention.

Here’s The Hot Corner, with data from December 17, 2024:

The standout insider move today comes from Eric Schuppenhauer, an executive VP at SoFi Technologies $SOFI.

Schuppenhauer made a bold statement by purchasing 30,599 SOFI shares—an investment worth $500,000.

This adds weight to the vision of CEO Anthony Noto, who demonstrated his confidence with $10 million in insider buys between March 2022 and May 2024.

The stock has officially left the station, completing a classic bottoming formation and now surging higher with authority:

The largest insider buy on today’s list comes via a Form 4 filing by TKO Group $TKO director Egon Durban.

Durban revealed a massive purchase of TKO shares for a total value of $48,133,338.

Durban currently serves as CEO of Silver Lake and is the chairman of Endeavor Group, the majority shareholder of TKO.

Stellantis is back with another large investment in Archer Aviation Inc $ACHR.

The automaker just revealed the acquisition of 751,879 shares, equivalent to $5 million.

Here’s The Hot Corner, with data from December 13, 2024: