Today: 21 March 2026
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TWSE:2303 27 January 2026

UMC stock jumps 10% toward a fresh high ahead of United Microelectronics earnings

UMC stock jumps 10% toward a fresh high ahead of United Microelectronics earnings

UMC’s U.S.-listed shares surged about 10% Tuesday, touching a 52-week high of $12.68 before settling near $12.46 in New York trading. No immediate company news explained the move, with attention turning to Wednesday’s quarterly earnings. The jump followed a broader rally in chip stocks and record highs in U.S. markets. UMC’s earnings call is scheduled for Jan. 28.

Stock Market Today

  • Riot Platforms (RIOT) Valuation Under Review After Share Price Slump
    March 21, 2026, 10:58 AM EDT. Riot Platforms (RIOT) shares fell 5.4% in one day, extending a 13.6% drop over 30 days amid mounting concerns over its financial performance. Despite a US$647.4 million revenue haul, Riot posted a US$663.2 million net loss, raising questions about its near-term profitability and exposure to Bitcoin price volatility. However, the firm's 68.3% one-year total shareholder return underscores strong longer-term gains. Analysts estimate Riot is undervalued at a fair price of US$25.94 versus its last close of US$13.38, citing growth prospects from its expansion in scalable data centers targeting AI and cloud computing sectors. Investors must balance these opportunities against risks of underutilized capacity and crypto market swings. The mixed outlook highlights a wider debate on Riot's positioning in the volatile cryptocurrency infrastructure space.
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