Analyst upgrades: PXD, GHDX and ATEC

MOST NOTEWORTHY: Pioneer Natural, Genomic Health and Alphatec were today's noteworthy upgrades:

Citigroup upgraded shares of Pioneer Natural Resources Company (NYSE: PXD) to Buy from Hold on valuation following the recent weakness.
Genomic Health Inc (NASDAQ: GHDX) was raised to Outperform from Sector Perform at RBC Capital, as they believe momentum for the company's Oncotype Dx test is building based on inclusion in new clinical guidelines and expanded reimbursement.
Alphatec Holdings Inc (NASDAQ: ATEC) was upgraded to Buy from Source of Funds at Think Equity, citing the new CEO's efforts to overhaul the company, which has positioned it for growth.

OTHER UPGRADES:

Intercontinental Exchange Inc (NYSE: ICE) was added to JP Morgan's Focus List.
Banc of America upgraded Sirona Dental Systems Inc (NASDAQ: SIRO) to Buy from Neutral.
Baird upgraded CommVault Systems Inc (NASDAQ: CVLT) to Outperform from Neutral.

Tags: Alphatec, ATEC, CommVault, CVLT, Genomic Health, GenomicHealth, GHDX, ICE, Intercontinental Exchange, IntercontinentalExchange, Pioneer Natural, PioneerNatural, PXD, SIRO, Sirona Dental, SironaDental, upgrades