Brookdale Senior Living stock halted by trading circuit breaker

Brookdale Senior Living Inc.'s stock was halted following a 13 percent surge that triggered a circuit breaker implemented after the U.S. equity market crash in May.

An order for 100 shares on the Nasdaq Stock Market drove the shares up to $21.87 at 11:00:06 a.m. New York time from $19.32 in the preceding transaction, according to data compiled by Bloomberg. The previous trade had been the stock's official open and came 90 minutes before the pause occurred.

Brookdale fell 12 percent to $19.22 on the subsequent transaction two seconds later. The stock was down 79 cents, or 3.9 percent, from yesterday's close at $19.27 as of 11:14 a.m. in New York. Brookdale said today that affiliates of Fortress Investment Group LLC sold 13 million shares at $18.76 apiece.

The surge in the stock triggered a curb implemented by U.S. exchanges after the May 6 stock market crash erased $862 billion in less than 20 minutes. The pause usually lasts five minutes for companies in the Standard & Poor's 500 Index and Russell 1000 Index as well as 344 exchange-traded funds once they rise or fall at least 10 percent within five minutes.

Locally, Brookdale has facilities in Vernon Hills, Northbrook, Des Plaines, Hoffman Estates, Glen Ellyn, Lisle, Oak Park and Chicago