MOST NOTEWORTHY: Delek US Holdings, Tesoro and American Eagle were today's noteworthy upgrades:- Citigroup upgraded shares of Delek US Holdings (NYSE: DK) and Tesoro Corp. (NYSE: TSO) to Buy from Hold to reflect their more positive stance on refiners.
- Bear upgraded American Eagle Outfitters (NYSE: AEO) to Outperform from Peer Perform, citing positive risk/reward given its favorable positioning relative to the teen sub-sector, sustainable margins, and healthy balance sheet.
- Kroger Co. (NYSE: KR) was upgraded to Outperform from Neutral at Credit Suisse.
- National Australia Bank (OTC: NABZY) was raised to Neutral from Underweight at JP Morgan.
- Lehman upgraded Orbitz Worldwide (NYSE: OWW) to Overweight from Equal Weight.










