Core Insights - U.S. consumers have driven Walmart's grocery penetration to a record 72% as financial insecurity among Americans ages 18–54 climbs to 70% [1] - Walmart serves over 190 million Americans monthly, which is 2.5 times the reach of second-place Dollar General at 28.6% [1] - Walmart's penetration rose 6 percentage points year over year, marking the largest growth in penetration among all retailers [1]