These stocks were the most active ahead of Monday’s open. These were the top-moving stocks before Monday’s open. Stock in Capital One Financial fell 3.5% following reports that Walmart Inc. WMT had sued the credit-card giant to end their partnership. Tupperware Brands Corp. TUP, 38%, after the food storage product maker issued an “informing” late Friday stating that it had hired financial advisors to assist it with its near-term problems.