Payments processor Checkout.com raises US$450m in new funding, valuation jumps to US$15b Hong Kong StandardPayments processor Checkout.com raises US$450m in new funding, valuation jumps to US$15b Hong Kong StandardPayments processor Checkout.com raises US$450m in new funding, valuation jumps to US$15b Hong Kong StandardPayments processor Checkout.com raises US$450m in new funding, valuation jumps to US$15b Hong Kong Standard