CPI Card Group Inc. is Colorado's newest public company, its shares making their debut Friday on the Nasdaq exchange. And after after sharply cutting its initial-public-offering issue price over concern about the IPO market, the Littleton-based maker of chip credit cards (Nasdaq: PMTS) saw its shares soar 21.7 percent on the inaugural day of public trading. After setting a issue-price range of $16-$18 per share in a Sept.