NEW YORK -- Stocks that moved substantially or traded heavily Wednesday:
Tesla Inc., down $22.68 to $310.12
The electric car maker cut its prices by $2,000 and announced fourth-quarter sales figures that fell short of analysts' estimates.
Cabot Oil & Gas Corp., up $1.18 to $23.53
Energy companies, the weakest sector in the market last year, rose as the price of crude oil turned higher.
U.S. Concrete Inc., down $3.48 to $31.80
Analysts at D.A. Davidson lowered their estimates for the company, partly due to unfavorable weather in Texas and wildfires in California.
Akamai Technologies Inc., down $2.07 to $59.01
Technology companies fell more than the rest of the market.
Duke Energy Corp., down $1.60 to $84.70
Utilities and other high-dividend stocks, such as real estate investment trusts, fell.
Box Inc., up $1.50 to $18.38
The cloud-based software company's stock rose on rumors that it could be an acquisition target.
NetEase Inc., down $5.63 to $229.74
The Wall Street Journal reported that NetEase was left off a list of video game makers that got new approvals from Chinese regulators.
Roku Inc., up $1.88 to $32.52
The company said it is expanding its Roku Channel to include premium subscriptions.