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Shares of the following companies were among those that made noteworthy moves in the U.S. stock market Wednesday.

Advancers

Borders Group Inc.  (BGP) jumped 38% after its largest investor reportedly said he did not think the bookseller would file for bankruptcy.

Home Diagnostics Inc.  (HDIX) shares soared 89% after the maker of diabetes-testing supplies said it will be acquired by a Japanese medical-device firm.

Lexmark International Inc.  (LXK ) shares added 7.5% after the country's second-biggest printer maker on Tuesday posted results that beat expectations.

News Corp.  (NWS) shares rose 6.1% after the media company, which owns The Wall Street Journal and Dow Jones Newswires, offered quarterly results that topped Wall Street's expectations.

Decliners

C.H. Robinson Worldwide Inc.  (CHRW) shares fell 6.8% after the logistics provider tallied a narrower-than-expected quarterly profit.

Polo Ralph Lauren Corp. (RL) shares declined 8.4% after the clothing maker's earnings forecast disappointed investors. 

Ryder Systems Inc. (R ) shares dropped 7.7% after the trucking company forecast 2010 earnings that fell short of expectations.

Toyota Motor Corp. (TM) shares slid 6% after Transportation Secretary Ray LaHood said owners of Toyota vehicles recalled for brake-related problems should stop driving them and take them in for repairs. He then backpedaled shortly thereafter. 

Walgreen Co.(WAG ) shares declined 5.9% after the drugstore chain reported a January drop in sales at stores open at least one year.

Western Union Corp. (WU ) shares lost 8.9% after the payment-services company's outlook proved disappointing.