By Rick Kahler via Iris.xyz

As I pointed out last week, research shows that most investors and investment advisors woefully underperform the markets. How woeful is woeful?

Over the past 30 years, it meant leaving an average of $7,100 per year on the table for every $100,000 invested. For a 401(k) that grows to $1 million at retirement age, this means $71,000 less in retirement income to spend every year. That’s a really big deal.

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