Stocks to Watch: Citigroup, JA Solar, Chindex

Among the companies with shares expected to actively trade in Monday’s session are Citigroup Inc.(C), JA Solar Holdings(JASO) Co and Chindex International Inc.(CHDX)

Citigroup said its first-quarter profit rose 3.5% from a year earlier as the bank benefited from lower expenses and provisions for soured loans, overshadowing weakness at its fixed-income unit. Shares jumped 4% to $47.50 in premarket trading as results comfortably beat the estimates of analysts polled by Thomson Reuters.

JA Solar raised its first-quarter solar cell and module shipments estimate, a move Chief Executive Baofang Jin attributed to solid execution. The solar-products company’s shares rose 5.2% to $9.80 in recent premarket trading.

Chindex said it had received a bigger acquisition offer than the one it received from a consortium led by private-equity firm TPG Inc. Chindex–a U.S. company that provides health-care services in China through the United Family Healthcare network–didn’t identify the new bidder. Shares rose 17% to $22.90 in recent premarket trading.

Acorda Therapeutics Inc.(ACOR) said Monday that its Phase 3 study of its dalfampridine-QD treatment in people with post-stroke walking deficits will start later than originally expected. Shares of the biotechnology company fell 3.4% to $34 in premarket trading.

Trina Solar Ltd.(TSL) lowered its solar module shipment guidance for the first quarter, citing a temporary decrease in shipments to the European Union. The Chinese solar panel maker also boosted its gross margin expectations for the quarter. Shares dropped 1.8% to $11.35 premarket.

Fitch Ratings downgraded its rating on Alcoa Inc.(AA) into junk territory, citing financial strains including weak aluminum prices.

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Vornado Realty Trust sa(VNO)id its board of trustees has approved a plan to spin off the commercial property owner’s shopping center business into a new publicly traded real-estate investment trust.

Yahoo Inc.(YHOO) said Tribune Co. Chief Executive Peter Liguori won’t seek re-election to the Internet giant’s board of directors. Yahoo didn’t provide a reason in a Securities and Exchange Commission filing.