Investors get to see many analyst upgrades and Buy ratings from Wall Street firms, but they often miss or do not get to here the downgrades. 24/7 Wall St. reviews many fresh research calls each and every day to find great ideas from value stocks to growth stocks to dividend stocks, and we have broken out the negative analyst calls today. These are this Tuesday’s top analyst downgrades and cautious research notes from Wall Street.

Agilent Technologies Inc. (NYSE: A) was downgraded to Neutral from Buy at Goldman Sachs.

Demand Media Inc. (NYSE: DMD) was downgraded to Market Perform at JMP Securities and downgraded to Hold from Buy at Stifel after lowering its sales outlook and announcing the buyout of Society6.

Genomic Health Inc. (NASDAQ: GHDX) was downgraded to Sell from an already cautious Neutral rating at Goldman Sachs.

Melco Crown Entertainment Ltd. (NASDAQ: MPEL) was downgraded to Hold from Buy at Deutsche Bank.

Netflix Inc. (NASDAQ: NFLX) was downgraded to Underperform from Market Perform, but its price target was raised to $180 from $125, at Bernstein (shares down only about 1.3%).

Pan American Silver Corp. (NASDAQ: PAAS) was downgraded to Market Perform from Outperform at Cowen (at 52-week lows).

Sunoco Logistics Partners L.P. (NYSE: SXL) was downgraded to Neutral from Buy at BofA/Merrill Lynch.

Western Gas Partners L.P. (NYSE: WES) was downgraded to Neutral from Buy at BofA/Merrill Lynch.

Here are the top analyst upgrades and positive calls for Monday.