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Market slide continues, Ford invests in U.S., SeaWorld shutters Shamu

Stocks here at home and abroad are having a rough day. All three major U.S. indices (^DJI, ^GSPC, ^IXIC) are trading lower for the fifth straight session.

Here are some of the other stories Yahoo Finance is keeping an eye on today.

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Valeant shares continue to tumble
Shares of drug maker Valeant (VRX) have plummeted over 50 percent in the past couple of months and are down close to 4 percent today alone, after investors raised concerns over its drug pricing strategies and its secretive relationship with Philidor, a specialty pharmacy. Valeant's CEO announced today that Philidor will cease its operations in January.

Ford invests in U.S. plants
Ford (F) has just made a big offer to unions, promising to invest $9 billion in its U.S. plants. New workers would get an $8,500 signing bonus, and veteran employees would get a 3 percent raise. This makes Ford’s offer the best deal for workers among the big three auto manufacturers.

SeaWorld shuts down Shamu

SeaWorld (SEAS) caved to critics of its killer whale exhibit, announcing it will eventually end its orca show in San Diego next year. It also committed to a conservation-friendly program beginning in 2017, promising to put the whales in a more natural setting.

Record setting art auction
A century-old painting by Amedeo Modigliani sold Monday night for more than $170 million dollars. That's the second-highest amount paid for a painting sold at auction, fetching $70 million more than expected. The Long Museum of Shanghai is now the new owner of the piece.