If you're invested in any of the funds in our "Magnificent Retirement Mutual Funds" list, congratulations on owning some of the best managed and top-performing mutual funds. If you are lucky enough to discover our list of Top-Ranked Funds for the first time, it's never too late to start investing with the best, especially when it comes to your retirement.

How can you tell a good mutual fund from a bad one? It's pretty basic: if the fund is diversified, has low fees, and shows strong performance, it's a keeper. Of course, there's a wide range, but using our Zacks Rank, we've found three mutual funds that would be great additions to any long-term retirement investors' portfolios.

Let's break down some of the mutual funds with the highest Zacks Rank and the lowest fees.

Fidelity Series Blue Chip Growth (FSBDX) has a 0.01% expense ratio and 0% management fee. FSBDX is a Large Cap Growth option; these mutual funds purchase stakes in numerous large U.S. companies that are expected to develop and grow at a faster rate than other large-cap stocks. With yearly returns of 18.22% over the last five years, this fund clearly wins.

Franklin International Growth Adviser (FNGZX): 0.84% expense ratio and 0.75% management fee. FNGZX is a Non US - Equity option, focusing their investments acoss emerging and developed markets, and can often extend across cap levels too. FNGZX, with annual returns of 10.55% over the last five years, is a well-diversified fund with a long track record of success.

AllianzGI Convertible Fund IS (ANNPX): 0.69% expense ratio and 0.57% management fee. ANNPX is a Convertible Bonds fund, which are unique investment opportunities because they have both fixed income and equity components, making them hybrid securities. The fund is mainly invested in equities, has a long reputation of salutary performance, and has yearly returns of 10.74% over the last five years.

So, there you have it - if your advisor has you invested in any of our "Magnificent Retirement Mutual Funds," they are certainly earning their keep. If not, you may want to look elsewhere.

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