A.M. Update

S&P futures are down -1% on this quad-witching options expiration day with some $4 trillion in notional expiring, making it the second biggest options expiration in history. Interestingly though, NASDAQ-100 futures (-0.45%) are down less than half S&P futures. Adobe (ADBE  +4.65%) and Accenture (ACN  -2.2%) are making sizable moves this morning after reporting quarterly results. Treasury…