Wal-Mart will open its newest Supercenter off York Road in Cockeysville today, an expansion of its older Hunt Valley store that Baltimore County business watchers say will put pressure on area grocery stores.

The opening of new Wal-Mart stores, especially Supercenters, is often met with angst and concern by local businesses, but the stores often provide a benefit to the area, said Steven Restivo, director of corporate affairs for Wal-Mart?s Northeast region.