DeepSeek’s breakthrough is “a wake up call” that adds to market concentration risks, Oppenheimer and team say: a reminder that benefits from any revolutionary technology don’t automatically accrue to big spenders at the start of the adoption cycle, and that competition humbles even the biggest companies.

Monday’s trillion-dollar stock-market wipeout will be remembered as an opportunity to scoop up shares of some of the most valuable U.S. companies at a discount, according to a team of equity strategists at Goldman Sachs Group.