Thursday's Analysts' Upgrades and Downgrades

Chicos FAS (CHS Quote) estimates lowered at Credit Suisse: Credit Suisse said it is lowering its 2007 EPS estimates on CHS to $1.24 from $1.21 based on anticipated markdown pressures and higher tan expected costs. Maintained Outperform rating.

Dollar General (DG Quote) estimates reduced at Goldman: Goldman said it is cutting its 2007 estimates on DG to $0.84 from $0.87 after company announced major strategic shift. Will close 400 underperforming stores, clear aged inventory, and slow 2007/2008 unit growth. See shift as welcome change but maintain Sell rating and $13 target price.

Foundry Networks (FDRY Quote) target price raised at Piper: Piper said it is raising its target price on FDRY to $17 to reflect higher expectations given solid demand trends in enterprise. Maintained Outperform rating.

Foundry Networks (FDRY Quote) numbers raised at Jefferies: FDRY now seen earning $0.60 from $0.57. Ups price target to $17.50 from $15.00. Reiterates Buy rating.

F5 Networks (FFIV Quote) numbers raised at Jefferies: Jefferies estimates FFIV earning $2.50 from $2.37. Ups price target to $85.00 from $67.00. Reiterates Buy rating.

Marathon Oil (MRO Quote) numbers raised at UBS: UBS raises MRO price target to $94.00 from $89.00 and raise 2007 estimate to $10.82 from 10.75. Reiterates Neutral rating.

Tiffany (TIF Quote) estimates raised at Credit Suisse: Credit Suisse said it is raising its F2006 EPS estimates on TIF to $1.80 from $1.75 based on higher sales and margin assumptions. Maintained Neutral rating.