Stocks were indicated lower on Wednesday, an April Fool’s trick for the first day of the quarter. Still, the bull market is six years old as the Dow Jones Industrial Average had its first negative quarter in two years. The one constant that has been in place for three years now is that investors have bought up every single sell-off.

24/7 Wall St. reviews dozens of analyst research reports each day to find new trading and investment ideas for its readers. Some analyst calls cover stocks to buy, while others cover stocks to sell or to avoid.

These are this Wednesday’s top analyst upgrades and downgrades. There are many calls, which may be the peak before the coming Easter holiday weekend.

Alibaba Group Holding Ltd. (NYSE: BABA) was maintained as Outperform at Oppenheimer, but the price target was cut to $105 from $112 (versus a $83.24 close).

Altera Corp. (NASDAQ: ALTR) was downgraded to Hold from Buy at Argus. The firm believes a substantial buyout premium around the Intel buyout rumors has been put on the company now.

Apple Inc. (NASDAQ: AAPL) was added to the Focus List at Citigroup, but the firm already had a Buy rating. No details have been seen yet in the call.

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Dyax Corp. (NASDAQ: DYAX) saw its shares urge on positive drug study news and an FDA Fast Track designation. Oppenheimer maintained its Outperform rating and raised its target to $26 from $14. RBC Capital Markets maintained its Outperform rating and raised its target to $31 from $18. Dyax shares are indicated up 45% at $24.30 to decade highs.

Hewlett-Packard Co. (NYSE: HPQ) was raised to Buy from Hold and the price target was raised to $41 from $37 (versus a $31.16 close) at Jefferies.

Kinder Morgan Inc. (NYSE: KMI) was started as Buy with a $47 price target (versus a $42.15 close) at Stifel.

Michael Kors Holdings Ltd. (NYSE: KORS) was downgraded to Neutral from Overweight at Piper Jaffray.

Staples Inc. (NASDAQ: SPLS) was raised to Overweight from Sector Weight with a $20 price target (versus a $16.29 close) at KeyBanc Capital Markets.

Twitter Inc. (NYSE:TWTR)was started as Buy with a $65 price target (versus a $50.08 close) at Jefferies.