Why Is Defiance Daily Target 2X Long MRNA ETF ($MRNX) Up +17.23% Today? (Find out why any stock moved today on Tickeron.) MRNX surged roughly 17.23% to about $168.82 in intraday trading, from a prior close of $144.01. The primary catalyst was Moderna's (MRNA) official addition to the Nasdaq-100 Index, which triggered forced buying by passive index funds. The ETF is a daily 2X leveraged fund, so it amplified Moderna's roughly 9% single-day gain into a much larger move. Secondary support came from Moderna's oncology pipeline, including positive Phase 3 melanoma data for its personalized cancer therapy. $SPY $SOXL $TQQQ