The casual dining chain represents the latest investment in multi-location franchises by private equity firm NRD Capital. Ruby Tuesday operates 599 locations in the US and 14 foreign countries. MARYVILLE, TN—Casual dining chain Ruby Tuesday, hit by four consecutive years of declining sales, said Monday it would be taken private by NRD Capital for $335 million, including the assumption of debt. The deal for $2.40 per common share represents a 21% premium on Ruby Tuesday’s clos