American workers exited 2010 with more than $10.2 trillion invested in employer-sponsored retirement plans, up 10% from the $9.3 trillion in play at the close of 2009, according to a new report from Chicago-based affluent investor consultant Spectrem Group.The beefed-up portfolios is just the latest sign that investors are finally starting to regain confidence in the market and, perhaps more important, making a concerted effort to stash away assets for their golden years.

The last time employer-sponsored retirement plans were almost as flush was back in 2007 when workers invested a total of $10.3 trillion.

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