https://www.reuters.com/article/us-td-ameritrade-apple/td-ameritrade-taps-apple-pay-for-instant-fund-transfers-to-accounts-idUSKCN1P91CL >Brokerage firm TD Ameritrade Holding Corp is tapping Apple Inc to help solve a problem that has lingered for decades: how to get money into a brokerage account and make it available to trade with on the same day.