Thursday's Analysts' Upgrades and Downgrades

BJ's Wholesale (BJ Quote) target price cut at Credit Suisse to $29 from $26 after Q4 results fell short of estimates. Maintained Neutral rating.

Berkshire Hathaway (BRKA Quote) 2007 estimates raised at Credit Suisse to $5,700 from $5,350 based on higher profit margins from non-insurance businesses. Maintained Neutral rating.

Chico's (CHS Quote) price target raised at Goldman to $27 from $25 after company's inline Q4 results. 2007 estimates cut to $1.14 from $1.20 to reflect lower same-store sales and margin expectations. Inventories improved 11% on a square foot basis. Maintained Neutral rating.

Express Scripts (ESRX Quote) target increased at Goldman to $80 from $75 based on modest increase in bid for Caremark and subsequent increased likelihood of merger. Maintained Neutral rating.

Saks(SKS Quote) numbers raised at UBS. Price target lifts to $13.50 from $10.50 and 2007 EPS estimates bump up to $0.39 from $0.38. Reiterates Reduce rating.