Brean Capital analyst Mike Burton downgraded Marvell Technology to Hold saying he can't recommend the stock given the uncertainty around the accounting investigation into earnings. Further, in addition to the market weakness in PCs and Mobile, Marvell's businesses have been under competitive pressure, Burton tells investors in a research note. After the chipmaker announced weaker than expected preliminary Q2 results and an investigation into its accounting, the stock is down $1.97 to $8.58 in early trading. Susquehanna and Needham also downgraded Marvell following this morning's developments.