IBM’s Quantum Ascent: A Stock’s Social Climb

A most persuasive demonstration of its capabilities, if one may so describe it, stirred the hearts of investors, who, in a fit of collective enthusiasm, elevated the company’s shares by over 5% that day. Such a triumph, one might suppose, outshone the S&P 500 (^GSPC), which, in contrast, declined by 0.5%-a modest setback, to be sure.








