Baidu Inc. shares jumped by the most in more than three years in Hong Kong as optimism over its AI chip potential grows. The stock soared 16% in Hong Kong, the most since March 2022 and adding $6.4 billion in market value. The surge came after Arete Research Services LLP lifted its rating on Baidu’s American depositary receipts to buy from sell — it had held the only sell recommendation on the stock since it downgraded it last May. Most Read from Bloomberg Other analysts at firms including Citigroup I ...

The most talked about and market moving research calls around Wall Street are now in one place. Here are today's research calls that investors need to know, as compiled by The Fly.Top 5 Upgrades: Loop Capital upgraded Union Pacific (UNP) to Hold from Sell with a price target of $227, up from $214. With the shares down 5% year-to-date, Union Pacific's valuation multiples are now only modestly above the bottom of their five-year ranges, the firm tells investors in a research note.BofA upgraded Prologis (PLD) ...