(Bloomberg) — Wall Street equities traders are bracing for an unusually large tally of options expiring on Friday, which risks injecting even more volatility into a market that’s seen weeks of turbulence amid the raging Mideast conflict. Roughly $5.7 trillion in notional options tied to individual US stocks, indexes and exchange-traded funds are set to expire on Friday in the quarterly event that traders have dubbed the “triple-witching” — the largest March expiry in Citigroup Inc. data going back to 1996 ...