The appliance retailer has exhibited record-breaking volumes the past 5 days, with an average daily volume spike of 140% above the expected 65-day average. The -2.18% price change was insignificant, leaving NAC's price at $10.78. This volume move could indicate a change in trend, and may be a buy signal for investors. A.I.dvisor found 22 similar cases, 18 of which were successful. Based on this data, the odds of success are +82%.