The funds in our "Magnificent Retirement Mutual Funds" list are among the best managed and best performing mutual funds available. If you are just finding out about our Top-Ranked Funds list, we welcome you!

Great performance, diversification, and low fees: it's a pretty simple formula for a great mutual fund. Some are better than others, but utilizing our Zacks Rank, we have identified three mutual funds that would make great additions to long-term investors' portfolios.

Let's take a look at some of the highest Zacks Ranked mutual funds with the lowest fees.

If you are looking to diversify your portfolio, consider Goldman Sachs Small/Mid-Cap Growth Institutional (GSMYX Quick QuoteGSMYX - Free Report) . GSMYX is a Mid Cap Growth mutual fund. Mid Cap Growth funds pick stocks--usually companies with a market cap between $2 billion and $10 billion--that demonstrate extensive growth opportunities for investors compared to their peers. This fund is a winner, boasting an expense ratio of 0.93%, management fee of 0.85%, and a five-year annualized return track record of 11.31%.

T. Rowe Price Global Stock (PRGSX Quick QuotePRGSX - Free Report) : 0.79% expense ratio and 0.64% management fee. PRGSX is a Global - Equity mutual fund investing in bigger markets like the U.S., Europe, and Japan; these kinds of funds aren't limited by geography. PRGSX, with annual returns of 15.08% over the last five years, is a well-diversified fund with a long track record of success.

JPMorgan Intrepid Growth Fund R2 (JIGZX Quick QuoteJIGZX - Free Report) : 1.09% expense ratio and 0.3% management fee. JIGZX is a Large Cap Growth mutual fund, and these funds invest in many large U.S. firms that are projected to grow at a faster rate than their large-cap peers. With a five-year annual return of 12.29%, this fund is a well-diversified fund with a long track record of success.

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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