The most significant transaction on today's list comes in a Form 4 filing by Danaos Corp $DAC, which revealed a purchase of $7.2 million in Eagle Bulk Shipping Inc $EGLE.

Danaos has quietly amassed an 11.32% ownership stake in its competitor...

From the desk of Steve Strazza @Sstrazza

Tuesday night we held our June Monthly Conference Call, which Premium Members can access and rewatch...

The most significant transaction on today's list comes in a 13G filing by Ecor1 Capital.

Ecor1 raised its ownership stake in Zymeworks Inc $ZYME from 11.80% to 19.90%.

The most significant transaction on today's list comes in a Form 4 filing by Matrix Capital Management.

The hedge fund reported the acquisition of 4,760,000 shares, equivalent to $107.8 million, in the small-cap biotech company Zentalis...

The most significant transaction on today's list comes in a Form 4 filing by Donegal Mutual Insurance Company.

The firm reported a $2,279,836 purchase in Donegal Group Inc $DGICA.

The most significant transaction on today's list comes in a Form 4 filing by Dan Wilks, the manager of THRC Management

Wilks revealed a purchase of 285,059 Profrac Holding Corp $ACDC shares, equivalent to roughly $3.8 million.

The most significant transaction on today's list comes in a Form 4 filing by Diversified Healthcare Trust $DHC director Adam Portnoy.

Portnoy revealed a DHC purchase worth roughly $17.9 million.

The most significant transaction on today's list comes in a Form 4 filing by Ryan Cohen, executive chairman of GameStop $GME.

Cohen revealed a purchase of 443,842 GME shares, equivalent to roughly $10 million.

The most significant transaction on today's list comes in a Form 4 filing by Len Blavatnik.

Blavatnik reported a purchase of $10 million in Day One Biopharmaceuticals $DAWN.

The most significant transaction on today's list comes in a Form 4 from Diversified Healthcare Trust director Adam Portnoy.

Portnoy revealed a purchase of $14.7 million in DHC.

The most significant transaction on today's list comes in a Form 4 filing by Thomas W. Warsop III, president and chief executive officer of ACI Worldwide Inc $ACIW.

Warsop revealed the acquisition of 43,000 shares of ACIW, equivalent to $1...

The largest insider buy on today's list comes in a Form 4 filing by the executive vice president and chief people officer of Stericycle $SRCL.

That purchase was worth $308,618.