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 Monday, Oct. 1.

Garmin ( GRMN - Get Report):

( CVGRX) Calamos Growth allocated 2.3% of its total assets to the stock as of June 30, according to the fund company¿s Web site.

( FCNTX) Fidelity Contrafund had a 594,200 shares as of June 30, but this represented less than a 1.2% of the fund¿s assets, according to its quarterly shareholder report.

Amphenol ( APH - Get Report):

( FCNTX) Fidelity Contrafund held 3.1% of the company¿s shares outstanding as of December 31, but the holding only accounted for 0.29% of the fund¿s portfolio, according to Thomson Financial.

Fidelity¿s ( FMAGX) Magellan held 2.27% of outstanding shares as of December 31, which represented 0.31% of its total assets, according to Thomson Financial.

Valmont Industries ( VMI - Get Report):

PowerShares¿ ( PHO) Water Resources exchange-traded funds allocated 3.5% of its assets to the company as of Sept. 28, according to its Web site.

Schlumberger ( SLB - Get Report):

American Funds¿ ( AGTHX) Growth Fund of America allocated 2.01% of assets to the company¿s as of June 30, according to the American Funds¿ Web site.

Air Products & Chemicals ( APD - Get Report):

American Funds¿ ( symbol) Washington Mutual Investors Fund allocated 0.36% of total assets to the stock as of June 30, according to its Web site.

You can find a description of these companies and an explanation of their buy ratings here.