THERE'S A NEW MARKET-share leader in Las Vegas, and it's Wal-Mart.
With 15 supercenters and 11 Neighborhood Markets, Wal-Mart has a 19.7% share, compared with 18.8% a year ago, according to the most recent data from Metro Market Studies, Tucson, Ariz.
Kroger-owned Smith's Food & Drug Centers, whose local combination stores are considered the conventional price-leader there, is No. 2, with share of 18.5%, compared with 18.9% last year.
However, when Smith's share is