TSM is trading 3.5% up at $456.33 following fresh optimism around sustained AI-related demand and a significant analyst upgrade. - Bank of America raised its price target for TSM from $490 to $590, maintaining a Buy rating. - Broker commentary this week highlighted strong AI demand for the foundry. - Broader sentiment is supported by sharp pre-market gains in Nasdaq futures and chip-sector peers, driven by upbeat forecasts from Micron and Qualcomm.