By Niket Nishant (Reuters) – Robinhood Markets Inc on Tuesday launched a new debit card that would allow spare change investing as it looks to expand beyond trading and into more consumer finance verticals, heating up competition with fintech giants Chime and PayPal. With the new cash card, users could choose to round up their change to the nearest dollar and invest it in assets of their choice, Robinhood said. The company, known as a pioneer of commission-free trading, would also reward users of this feature with a weekly bonus, it said. The card is being offered by Robinhood Money, a new sub…