âªâ¬ By Tricia Duryee, Groupon Stock Now Half Off Many retailers are enjoying a Thanksgiving shopping spree lift from investors, but not Groupon. Its shares closed today down nine percent, settling at $15.24 after bouncing off a new low of $14.85. Thatâs less than half the $31.14 that some investors paid at the stockâs high point, just after it went public in early November.