These Millennials Are Socking Away 15% of Their Salaries

When you're young and hellbent on saving for retirement.
Photographer: Victor J. Blue/Bloomberg
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Iron Man. Wonder Woman. Millennial Super Saver.

He or she is an ordinary human, 18 to 34, who saves at least 15 percent of his or her salary each year in a 401(k) retirement savings plan. The mission: Save enough to retire comfortably. Or at least retire.