Six Flags and Yahoo are big market movers

NEW YORK (AP) — Stocks that moved substantially or traded heavily Wednesday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

Six Flags Entertainment Corp., up $4.40 to $38.90

The amusement park operator reported a boost in quarterly revenue and the results topped Wall Street expectations.

Unisys Corp., up $4.24 to $23.62

The information technology service provider reported a quarterly profit fueled by growth from both its services and technology units.

3D Systems Corp., down $6.71 to $36.67

The 3-D printer maker cut its revenue outlook and expects profit in the third-quarter to fall short of Wall Street expectations.

Discover Financial Services, down $3.37 to $61.01

The financial services company reported a boost in quarterly profit on increased credit card spending, topping expectations.

Nasdaq

Yahoo Inc., up $1.82 to $42

The Internet company reported a windfall from Alibaba's recent IPO, which greatly boosted its third-quarter financial results.

ETrade Financial Corp., down 24 cents to $20.70

The financial services company reported a boost in quarterly profit and revenue on market activity, beating expectations.

Boulder Brands Inc., down $3.11 to $9.62

The health food company, which makes the Smart Balance brand, expects its third-quarter results to fall short of Wall Street forecasts.

Himax Technologies Inc., down 49 cents to $7.53

Google Inc. decided against exercising an option to increase its investment stake in the display imaging technology company.