Top 10 401(k) plans among the biggest S&P 500 companies

Have you ever wanted to compare how the largest public companies in the U.S. stack up when it comes to the generosity of their defined contribution retirement plans? If so, then you're in luck.

Here are five criteria that Bloomberg used ranked the 401(k) plans of the top 50 companies in the S&P 500 Index based on the generosity of their plans for a new hire.

Match: The amount that a company contributes to your 401(k), based on the percentage of your salary that you contribute.

Additional contributions: More money that your company might kick in beyond the match — for example, profit-sharing at year-end.

Investments: Whether or not a company offers the choice to invest in a low-fee stock, bond or international index fund.

Vesting: How many years following your hire date that you have to wait before the company's contributions are fully yours to keep.

Enrollment: Whether a company automatically enrolls new employees in the plan.

Here are the best 401(k) plans among the biggest companies whose stock is listed on the S&P 500. The scores represent the total points the companies received on a scale of 100.

Click here to see the rest of the list and gauge where your own company's 401(k) plan ranks.