QumulusAI (QMLS) reported Monday the purchase of 1,632 Nvidia (NVDA) Blackwell B300 GPUs to meet demand for AI compute, with funding mainly through Technology Finance Corporation and USD.ai.

Shares of QumulusAI fell 33%, with intraday trading volume of over 316,000 versus a daily average of about 187,000.

Barclays downgraded Penguin Solutions (PENG) to underweight from equal weight, with a price target of $40.

Late Friday, Penguin said it has closed its offering of $750.0 million of 0.00% convertible senior notes due 2031.

Shares fell 11% as intraday trading volume jumped to over 4.2 million from a daily average of about 3.8 million.

Tempus AI (TEM) agreed to acquire Personalis (PSNL) for a total enterprise value of $1.5 billion. Needham downgraded Personalis shares to hold from buy.

Shares of Personalis slumped 12% as trading volume climbed up to over 9.5 million from a daily average of about 3.6 million.

Price: 9.63, Change: -4.65, Percent Change: -32.56