Ainvest Option Flow Digest - 2026-04-16: 🌊 $299M Whale Tape — Smart Money Sells Into Earnings Pops While One Trader Bets on $SPY Breakout

$299M institutional option tape today, dominated by sellers — TSM $85M post-earnings call sale, SNDK $67M exit before Nasdaq-100 inclusion, NFLX $50M bear call spread hours before tonight's print. Plus a fresh SPY long-call bet on the FOMC + Mag 7 runway and an IWM synthetic short on small caps. Fou