Matrix USA Rating Changes 8/6

August 6, 2008 3:54 PM EDT

Upgrades:
SI Int'l (Nasdaq: SINT) from Sell to Hold, citing pending new financials; Pharmaceutical Product Development (Nasdaq: PPDI) from Sell to Hold, citing pending new financials;

Downgrades:
Petsmart (Nasdaq: PETM) from Buy to Hold, citing an analyst review;


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Stocks Mentioned

PETM 25.95

-0.16 -0.61%
Volume: 993,672
Track PETM

PPDI 21.50

-0.09 -0.42%
Volume: 1,196,064
Track PPDI

SINT 31.92

+0.00 +0.00%
Volume: 293,173
Track SINT


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