Fidelity and Charles Schwab say some users ran into technical issues in early trading as stocks tanked the most since August

· *Fidelity and Charles Schwab apologized to clients Monday morning after technical issues kept users from executing trades during the worst market slump in months.*
· *Users took to Twitter with complaints about login errors, their accounts incorrectly showing a $0.00 balance, and delays in filling orders.*
· *Monday's open...