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A trader works on the floor of the New York Stock Exchange.

Check out which companies are making headlines before the bell:

Abercrombie & Fitch — The teen apparel retailer earned an adjusted $1.08 per share for its latest quarter, 9 cents above estimates. Revenue was also slightly above forecasts, and the company also reported its first same-store sales gain in more than three years.



Amazon.com — BMO Capital began coverage on the online retailer's stock with an "outperform" rating, saying a flight to safety away from high growth stocks has created a buying opportunity for stocks like Amazon.

CSX — Rival rail operator Canadian Pacific approached CSX about a takeover back in January. Canadian Pacific has been trying to buy rail operator Norfolk Southern , which has resisted those overtures.

Chesapeake Energy — Chesapeake's former CEO Aubrey McClendon has been charged by the Justice Department for allegedly leading a bid-rigging conspiracy involving oil and natural gas leases. The charges follow a four-year federal investigation, but McClendon said the Justice Department action is "wrong and unprecedented."

International Business Machines — IBM plans to sell up to $150 million of its shares in China computer maker Lenovo Group, according to IFR.

Valeant — Valeant triggered the Securities and Exchange Commission's probe of the drugmaker with its own request that regulators investigate claims against the company made by short seller and Citron Research founder Andrew Left, according to Reuters. Separately, Canaccord downgraded Valeant to "hold" from "buy," on growing uncertainty surrounding the internal and external probes involving the company.

Checkpoint Systems — The provider of inventory management solutions agreed to be bought by Canada's CCL Industries for $10.15 per share in cash or $556 million.

Anheuser-Busch InBev — The beer brewer struck a deal to sell SABMiller's China-based beer business To China Resources Beer Holdings. The deal is part of the company's effort to win China regulatory approval for its pending acquisition of SABMiller.

Starbucks — Chief Operating Officer Troy Alstead has resigned, a year after he took a leave of absence. His resignation was effective this past Monday and the coffee chain did not elaborate on a reason for his departure.

Zynga — Zynga named Frank Gibeau as its new chief executive officer, with founder Mark Pincus becoming executive chairman of the online game creator. Gibeau is a former executive at video game maker Electronic Arts .

Ross Stores — Ross reported quarterly profit of 66 cents per share, 2 cents above estimates, with the discount retailer's revenue also slightly higher than forecasts. Ross also increased its quarterly dividend by 15 percent to 13.5 cents per share. However, the company's guidance for the current quarter and the year as a whole is somewhat shy of expectations.

Weatherford International — Weatherford announced a secondary offering of 80 million common shares, with the oilfield services company planning to use the proceeds for general corporate purposes.

American Water Works — The utility company's stock will join the after the close of trading Thursday, replacing Consol Energy . Consol will move to the S&P MidCap 400 index.

Chipotle Mexican Grill — CLSA raised its price target on the stock to $613 from $536 per share, saying the restaurant chain saw a better than expected uptick in customer traffic last month. CLSA maintains a "buy" rating on the stock.