Investors and traders alike are usually on the lookout for new ideas that will generate profits. 24/7 Wall St. looks over research calls from Wall St. and beyond to find great ideas, from value stocks to growth stocks to dividend stocks. Many research-driven ideas for stocks to buy and to sell come from independent research firms, and many ideas come from the large sell-side investment banking firms on Wall St.

These are some of this Tuesday’s top analyst upgrades, downgrades and initiations seen from select Wall St. research calls. A new wave of initiations at UBS is skewing the calls to include many more technology and Internet names compared to normal.

Amazon.com Inc. (NASDAQ: AMZN) started as Neutral at UBS.

AOL Inc. (NYSE: AOL) started as Buy with $44 price target at UBS.

Apple Inc. (NASDAQ: AAPL) maintained Buy but removed from Conviction Buy List at Goldman Sachs (FULL SUMMARY).

Buffalo Wild Wings Inc. (NASDAQ: BWLD) started as Neutral at Credit Suisse.

Charles Schwab Corp. (NYSE: SCHW) cut to Neutral from Outperform at Credit Suisse.

CME Group Inc. (NASDAQ: CME) cut to Neutral from Outperform at Credit Suisse.

eBay Inc. (NASDAQ: EBAY) started as Buy with $64 target at UBS.

Exxon Mobil Corp. (NYSE: XOM) cut to Perform from Outperform at Oppenheimer.

Facebook Inc. (NASDAQ: FB) started as Neutral at UBS.

Read also: 5 big dividend hikes to watch for in April

Google Inc. (NASDAQ: GOOG) started as Buy with $945 target at UBS.

Goldman Sachs Group Inc. (NYSE: GS) cut to Neutral from Buy at BofA/Merrill Lynch.

Groupon Inc. (NASDAQ: GRPN) started as Sell at UBS.

Hewlett-Packard Co. (NYSE: HPQ) cut to Sell from Neutral with $16 target price at Goldman Sachs.

LinkedIn Corp. (NYSE: LNKD) started as Neutral at UBS.

Morgan Stanley (NYSE: MS) cut to Neutral from Outperform at Credit Suisse.

Priceline.com Inc. (NASDAQ: PCLN) started as Buy with $825 price target at UBS.

Read also: UBS Sees 25% or More Upside in These Key Stocks

Rackspace Hosting Inc. (NYSE: RAX) cut to Market Perform at Wells Fargo.

SunTrust Banks Inc. (NYSE: STI) cut to Neutral from Outperform at Credit Suisse.

Yahoo! Inc. (NASDAQ: YHOO) started as Buy with $27 target at UBS.

Yelp Inc. (NYSE: YELP) started as Buy with $30 target at UBS.

Zynga Inc. (NASDAQ: ZNGA) started as Neutral at UBS.

We have offered two views on the bull market trends. First is the bull market roadmap for April and beyond. The second and contrarian view is in the 10 things thich could wreck the bull market.

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