$GRFS Drops After Rejecting Buyout, $MYNZ Rises$GRFS (Grifols, S.A.) tumbled on Nov 27 after rejecting a €6.45B buyout from Brookfield Asset Management, calling it undervalued. The €10.50 per Class A share offer disappointed investors, sparking volatility. Meanwhile, $MYNZ surged 8% yesterday on strong volume, riding sector momentum.