Stocks that moved substantially or traded heavily on Wednesday:
Rite Aid Corp., up 4 cents to 72 cents
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The drugstore chain purged its top management, including CEO John Stanley, and said it will cut 400 full-time jobs.
Aurora Cannabis Inc., up $1.11 to $9.07
The Canadian marijuana company tapped billionaire investor Nelson Peltz as a strategic adviser.
Oaktree Capital Group, up $5.41 to $49.24
Brookfield Asset Management is buying 62 percent of the asset management firm.
Express Inc., down 51 cents to $4.53
The retailer reported weak fourth-quarter sales and gave investors a disappointing first-quarter outlook.
Vera Bradley Inc., up $2.44 to $13.62
The luggage and handbag maker's fourth-quarter profit and revenue beat Wall Street forecasts.
Sientra Inc., down $3.26 to $8.12
The breast implant maker reported a fourth-quarter loss that was far worse than analysts had forecast.
Fiat Chrysler Automobiles N.V., down 13 cents to $14.36
The carmaker is recalling nearly 900,000 vehicles in the U.S. because they do not meet emissions standards.
Guardant Health Inc., up $20.45 to $94.45
The provider of oncology testing services beat Wall Street's fourth-quarter forecasts and issued an upbeat outlook for the year.