Each weekday, TheStreet.com Ratings compiles a list of the top five stocks in five categories -- fast-growth, all-around value, large-cap, mid-cap and small-cap -- and publishes these lists in the Ratings section of our Web site.

For investors who prefer the diversification offered by mutual funds to owning individual stocks, here are some of the biggest holders of the companies that were on our list as of Thursday, Oct. 11.

Harsco ( HSC):

( BMDIX) Baird MidCap held 0.03% of shares outstanding as of March 31, according to Thompson Financial. This represented 2.80% of its total portfolio.

Harsco comprised about 2.23% of ( HISVX) Harbor Small Cap Value fund as of March 31.

Valmont Industries ( VMI):

( SAOAX) Security Alpha Opportunity held 0.04% of shares outstanding as of March 31. This accounted for 4.32% of its total portfolio.

( SMEAK) AIM Small Cap Equity held 0.29% of shares outstanding on March 31, about 0.97% of its total portfolio.

Amphenol ( APH):

( MNRMX) Manor fund held 3,662 shares as of March 31. This accounted for 3.13% of its total portfolio.

( WAHGX) Wasatch Heritage Growth held 0.12% of shares outstanding as of March 31, accounting for 2.98% of the company's total assets.

Woodward Governor ( WGOV):

Woodward Governor comprised 2.15% of ( QASVX) Federated MDT Small Cap Value fund's portfolio as of January 31.

On March 31, ( FMACX) FMA Small Company Portfolio held 0.25% of shares outstanding. This represented 1.54% of its total portfolio.

Heico ( HEI):

( PGSGX) JPMorgan Small Cap Growth fund held 3.30% of shares outstanding on Feb. 28, about 2.31% of its total portfolio.

Heico comprised 1.08% of ( PMCIX) Allianz CCM Emerging Companies fund's total assets on Feb. 28, according to Thomson Financial. This represented 1.40% of shares outstanding.

For a description of the top five mid-cap companies and an explanation of their ratings, click here.

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