TD Ameritrade Holding Corp. and its largest stakeholder, Toronto-Dominion Bank, are close to a deal to buy online brokerage Scottrade Financial Services Inc. for $4 billion, according to people with knowledge of the matter. TD Ameritrade would acquire Scottrade’s brokerage operations for about $2.7 billion in cash and stock, while Toronto-Dominion would purchase Scottrade’s banking operations for $1.3 billion in cash, the people said, asking not to be identified because the talks aren’t public. The takeover may be announced as soon as Monday before markets open in North America, the people said. The transaction would ... (full story)