Point72 Asset Management filed a 13G, reporting an increase in its stake in Tower Semiconductor $TSEM from 2.80% to 5.05%.

This represents a nearly 100% increase in its existing position, which is noteworthy.

Founded by Steve Cohen, the hedge fund is known for aggressive trading and deep research, managing tens of billions in assets.

Here’s The Hot Corner, with data from February 13, 2025:

A director at SLM Corp $SLM filed a Form 4 disclosing a significant purchase of company stock, an acquisition of shares worth $289,032 that signals confidence in the business.

Finally, Orbimed Advisors filed an original 13D reporting an 8.40% position in the newly issued Sionna Therapeutics $SION, a clinical-stage biopharmaceutical company researching medicines for cystic fibrosis.

Executive Vice President and Chief Commercial Officer Phil Guido just dropped $1 million on 4,645 shares of Advanced Micro Devices $AMD.

Guido is the one driving AMD's global commercial strategy. He's got a front-row seat to the company's growth prospects, so if he's buying, that's worth noting.

But what really stands out is the wave of CEO buying across the board.

The heads of Amcor $AMCR, Magnera $MAGN, Enanta Pharma $ENTA, and Kennametal $KMT all stepped in to buy their own stock.

When you see a bunch of CEOs putting their money where their mouth is, you pay attention.

Here’s The Hot Corner, with data from February 12, 2025:

Meanwhile, Rep. Ro Khanna was busy, reporting multiple buys across major names like Visa $V, JPMorgan $JPM, Mondelez $MDLZ, Qualcomm $QCOM, Cisco $CSCO, and PepsiCo $PEP, each purchase between $15,000 and $50,000.

...

Estee Lauder $EL director Paul Fribourg just doubled down, adding another 45,500 EL shares to his position.

Meanwhile, over at Match Group $MTCH, it’s not just one insider—it’s a coordinated move. Both the CEO and a director dropped $2.15 million on their own stock.

When leadership moves in tandem like this, it’s often a signal that they believe brighter days are ahead for the company.

Here’s The Hot Corner, with data from February 10, 2025:

Sylebra Capital made a serious move, buying 619,925 shares of PureCycle Technologies $PCT at $8.06.

The hedge fund has a history of making aggressive bets in tech and sustainability plays, backing names with long-term disruption potential.

Finally, insiders at MDU Resources $MDU, Becton Dickinson $BDX, and The...

Estee Lauder $EL director Paul Fribourg just doubled down, adding another 45,500 EL shares to his position.

Meanwhile, over at Match Group $MTCH, it’s not just one insider—it’s a coordinated move. Both the CEO and a director dropped $2.15 million on their own stock.

When leadership moves in tandem like this, it’s often a signal that they believe brighter days are ahead for the company.

Here’s The Hot Corner, with data from February 10, 2025:

Sylebra Capital made a serious move, buying 619,925 shares of PureCycle Technologies $PCT at $8.06.

The hedge fund has a history of making aggressive bets in tech and sustainability plays, backing names with long-term disruption potential.

Finally, insiders at MDU Resources $MDU, Becton Dickinson $BDX, and The...

The largest insider transaction on today’s list was filed by The Estee Lauder Companies $EL director Paul Fribourg.

Fribourg revealed a purchase of $5,724,373 in his own company’s stock.

The CEO of Markel Corp $MKL just put a little over $200,000 of his own cash into the stock—not a massive bet, but definitely worth paying attention to.

We like to see CEO purchases come with a little more size than this.

Here’s The Hot Corner, with data from February 7, 2025:

Control Empresarial de Capitales S.A., the investment firm tied to Mexican billionaire Carlos Slim, just made a massive bet on PBF Energy Inc $PBF, scooping up $4,305,060 worth of stock.

Last but not least, two Merck & Co $MRK directors just made a significant statement, collectively buying $1,577,499 worth of their company’s stock.

When not just one but multiple high-level...

We’ve got some notable insider transactions hitting the tape.

JetBlue Airways $JBLU Director Nik Mittal just went all in, snapping up 100,000 shares of JBLU.

After a brutal post-earnings drop on January 28, this insider move signals a strong bet on a turnaround.

With Mittal’s private equity background, he likely sees value the market is missing.

Here’s The Hot Corner, with data from February 6, 2025:

When the boss buys, it matters: Olin Corporation $OLN president and CEO just dropped $203,446 on company stock.

And Wellington Management just increased its Coterra Energy $CTRA stake from 9.67% to 11.10%.

Wellington is a heavyweight with a strong track record in energy. When a major firm increases its position, it signals confidence in future upside.

We just got some interesting insider action from a few big names. Let’s break it down.

Control Empresarial de Capitales S.A. just dropped $1,098,968 on a fresh PBF Energy $PBF buy.

This firm, linked to Mexican billionaire Carlos Slim, has stakes in everything from energy to media. When they make a move, it’s worth watching.

Here’s The Hot Corner, with data from February 5, 2025:

Long Focus Capital Management is taking a big bite of Herbalife $HLF with a 5% stake.

This hedge fund manages over $666M, with major positions in Comcast $CMCSA, Alibaba $BABA, and Intel $INTC.

Last but not least, James W. Ayers, the Executive Chairman of FB Financial $FBK, just bought 4,000 shares of his own company.

Pleasant Lake Partners LLC made a notable move in 1-800-FLOWERS.COM $FLWS. The investment manager acquired 724,700 FLWS shares, a purchase worth approximately $5.7 million.

Meanwhile, Pzena Investment Management increased its stake in Magna International Inc $MGA, filing a 13G that reflects a rise in ownership from 9.15% to 10.00%.

Here’s The Hot Corner, with data from February 4, 2025:

On the insider front, Director Robert Stallings disclosed a modest purchase of Texas Capital Bancshares $TCBI, buying shares valued at $250,434.

Today's most significant insider transaction comes straight from a Form 4 filing by none other than Warren Buffett.

Uncle Warren just scooped up 2,308,119 shares of Sirius XM Holdings $SIRI—a $54 million bet—pushing Berkshire Hathaway’s stake to 35.35%.

When Buffett adds, it’s worth paying attention.

Here’s The Hot Corner, with data from February 3, 2025:

Meanwhile, hedge funds are making moves in biotech:

• RA Capital Management disclosed a $50 million purchase in 89bio $ETNB. This is a fund known for backing early-stage biotech names before big breakouts. Their track record includes early stakes in Moderna in 2015.
• Paradigm Biocapital Advisors just filed a 13G for Edgewise Therapeutics $EWTX, reporting a 5.00% stake.

Another insider transaction to hit the tape was from Platinum Equity LLC.

A Form 4 filing reveals a $32.5 million purchase...

Director Elizabeth Davis just put nearly $200,000 on the line for 10,725 shares of Comstock Resources $CRK, a bold bet on the energy space.

Here’s The Hot Corner, with data from January 31, 2025:

Meanwhile, over in the financial sector, Timothy Hunter of Northwest Bancshares $NWBI scooped up 10,000 shares, signaling confidence in the regional banking sector.

Today's standout insider activity comes from Citadel Advisors, which filed an initial 13G revealing a 5.10% stake in Arvinas $ARVN.

When firms like Citadel and high-level executives put skin in the game, it pays to take notice.

Meanwhile, in a Form 4 filing, Adobe Inc $ADBE director David Ricks disclosed a purchase of 2,250 shares, a clear sign of confidence from the inside.

Here’s The Hot Corner, with data from January 30, 2025:

Pzena Investment Management filed an initial 13G for Advance Auto Parts $AAP revealing a stake of 5.50%.

Last but not least, former Visa CEO Alfred Kelly Jr, who joined General Motors’ $GM board of directors in September, bought 12,000 shares of GM.

Today's standout insider transaction comes from Ally Financial $ALLY CEO Michael G. Rhodes, who just made a bold move, buying 25,634 shares worth roughly $1 million.

When a CEO puts their own money on the line, it's always worth paying attention.

Here’s The Hot Corner, with data from January 29, 2025:

Last but not least, John C. Malone is back at it, adding to his stake in The Liberty Braves Group $BATRA with a fresh $935,450 buy.