Monolithic Power Systems, Inc. (MPWR) reported healthy fourth-quarter 2023 results, with the bottom and top lines beating the Zacks Consensus Estimate.Net IncomeOn a GAAP basis, net income fell to $96.9 million or $1.98 per share from $119.1 million or $2.45 per share in the prior-year quarter. The decline was primarily due to an increase in operating expenses.Non-GAAP net income was $140.9 million or $2.88 per share compared with $154 million or $3.17 per share in the year-ago quarter. The bottom line surp ...