Mid-cap growth mutual funds provide excellent choices for investors who emphasize investing in securities that will provide them growth with lesser risk. While large companies are normally known for stability and smaller ones for growth, mid caps offer the best of both the worlds, allowing growth and stability simultaneously.

Companies with market capitalization between $2 billion and $10 billion with solid growth prospects are generally considered while constructing portfolios of mid-cap growth mutual funds. Also, focusing on growth securities allows these funds to provide more returns as growth stocks refer to high quality stocks with the potential for revenue and earnings growth at a rate faster than the industry average.

Below we share with you 4 top-rated, mid-cap growth mutual funds. Each has earned a Zacks Mutual Fund Rank #1 (Strong Buy) and we expect the fund to outperform its peers in the future. To view the Zacks Rank and past performance of all mid-cap growth mutual funds, investors can click here to see the complete list of mid-cap growth funds .

Janus Enterprise S (JGRTX - MF report) invests a minimum of half of its assets in securities of companies having market capitalization similar to those included in the Russell Midcap Growth Index. JGRTX primarily focuses on acquiring common stocks of companies having an impressive growth prospect. JGRTX may also invest in securities issued by foreign companies including those from emerging economies. The Janus Enterprise S fund has returned 11.4% over the past one-year period.

Brian Demain is the fund manager of JGRTX since 2007.

Commerce MidCap Growth (CFAGX - MF report) seeks growth of capital. CFAGX invests the lion’s share of its assets in securities of mid-cap growth companies, which are considered as those with market capitalization within the range of the Russell Midcap Growth Index. CFAGX generally invests in securities of companies having a history of below-average price volatility. The Commerce MidCap Growth fund has returned 8.8% over the past one-year period.

CFAGX has an expense ratio of 1.05% as compared to the category average of 1.28%.

Columbia Mid Cap Growth Z (CLSPX - MF report) invests the major portion of its assets in equity securities including common stocks of companies having market capitalization identical to those listed in the Russell Midcap Index. CLSPX invest in securities of companies that are expected to provide impressive earnings growth over the long run. The Columbia Mid Cap Growth Z fund has returned 10.1% over the past one-year period.

As of August 2015, CLSPX held 121 issues with 2.44% of its assets invested in Activision Blizzard Inc.

JHFunds2 Mid Cap Stock 1 (JIMSX - MF report) seeks capital appreciation over the long term. JIMSX invests a large part of its assets in securities of mid-cap companies with a strong capital growth prospect. JIMSX invests in companies with market cap size within the universe of either the Russell Mid Cap Index or the S&P Mid Cap 400 Index. JIMSX may invest a maximum of 25% of its assets non-US securities, which also includes securities from emerging markets. The JHFunds2 Mid Cap Stock 1 fund has returned 7.3% over the past one-year period.

JIMSX has an expense ratio of 0.91% compared with the category average of 1.28%.

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