On Wednesday, $Moderna, Inc.(MRNA)$ soared 177%, adding around $44 billion to its market cap, while $默沙东(MRK)$ climbed 12.6%. The ripple effect lifted biotech ETFs across the board. $纳斯达克生物技术指数(NBI)$closed 6.4% higher, notching its biggest single‑day gain in six years.$SPDR S&P Biotech ETF(XBI)$rose 5.9%, $生物科技指数ETF-iShares Nasdaq(IBB)$ gained 6.6%, $iShares Genomics Immunology and Healthcare ETF(IDNA)$ jumped 13.3%, and