US stocks closed higher Wednesday. Dow Jones Industrial Average preliminary close +0.22%, S&P 500 +0.21%, Nasdaq +0.16%. Moderna (MRNA.O) surged 176%; Merck (MRK.N) +12.6%. Marvell Technology (MRVL.O) +9.8%. SK Hynix (SKHY.O) +0.35%. SanDisk (SNDK.O)

2026-08-20

US stocks closed higher Wednesday. Dow Jones Industrial Average preliminary close +0.22%, S&P 500 +0.21%, Nasdaq +0.16%. Moderna (MRNA.O) surged 176%; Merck (MRK.N) +12.6%. Marvell Technology (MRVL.O) +9.8%. SK Hynix (SKHY.O) +0.35%. SanDisk (SNDK.O) -3.5%; Micron Technology (MU.O) -0.39%. Nasdaq Golden Dragon China Index +1.5%.