What happened Dollar General (NYSE: DG), a nationwide chain of discount stores, has seen its shares climb 22.3% so far this week, according to data from S&P Global Market Intelligence. With the markets falling and inflation rising, people -- particularly those with lower incomes -- often look for ways to cut expenses, and that fits into Dollar General's business model. Traditionally, many items have been $1 in the store, but that has changed, and if that doesn't turn customers away, the company can boost profit margins.