The 'very good' economic numbers released on Tuesday allowed for markets to sustain gains, and close mostly higher, CNBC's Bob Pisani said.

OPEC members will meet in Vienna, Austria on Wednesday about a highly-anticipated oil production cap deal.

WTI Crude settled lower 3.9% to $45.23 on Tuesday, ahead of OPEC's meeting on Wednesday in Vienna.

Pfizer's (PFE) stock rating at Barclays was upgraded to 'overweight' earlier today.

GRZ Energy Founder and President Anthony Grisanti believes that if OPEC doesn't come to an agreement on Wednesday, oil will head into the $30's.

Analysts on CNBC's 'Halftime Report' reacted to UBS managing director Steve Milunovich forecasting near-term struggles for Apple (AAPL).

Apple's iPhone 8, expected next year, already sounds disappointing to some critics.

Jessica Lessin, editor-in-chief of The Information, looks at Donald Trump's tweets and how they could influence the market.

Apple's iPhone is the must-have gift of the 2016 holiday season, despite increased competition in the smartphone market.

The New York Times isn't done adjusting its cost structure, and expects to continue both cost-cutting and investing in new initiatives, said CEO Mark Thompson.