Post-FOMC flows are rotating: $80 billion into altcoins, with ETH/BTC and high-caps like BNB outperforming BTC, signaling capital chasing higher-beta plays. On the 17th of September, right after the FOMC chop, Bitcoin dominance [BTC.D] slipped 1.08% to 57.67%, marking the biggest daily drawdown after three straight sessions of upside.