Mara Holdings, Inc. has announced a significant increase in its offering of convertible senior notes, raising the total to $1 billion from an initial $700 million. The company initially proposed a $700 million offering, which was quickly oversubscribed, prompting the increase. The notes, which are zero-coupon and due in 2030, are intended to finance additional Bitcoin purchases. Following the announcement, Mara’s shares experienced a decline of 6.6% in pre-market trading but later rebounded with a 3.3% increase. The oversubscription indicates strong investor interest in the company’s debt offering.