Analyst downgrades: BOOM, AGN and JAVA

MOST NOTEWORTHY: Dynamic Materials, Allergan and Sun Micro were among today's noteworthy downgrades:

Dynamic Materials (NASDAQ: BOOM) was downgraded to Neutral from Overweight at J.P. Morgan following the Q1 report based on margin risk from steel costs and availability.
Allergan (NYSE: AGN) was downgraded to Hold from Buy at Jefferies ahead of the Q1 report on May 7 based on potential deceleration in Botox and breast implants, which could result in multiple contractions.
Sun Microsystems (NASDAQ: JAVA) was downgraded to Peer Perform from Outperform at Bear, citing the disappointing earnings report for the downgrade.

OTHER DOWNGRADES:

ManTech (NASDAQ: MANT) was downgraded to Neutral from Outperform at Cowen based on valuation and expectations for decelerating growth in 2H08.
Silver State Bancorp (NASDAQ: SSBX) was downgraded to Sell from Hold at Sandler O'Neil.