Concerns about the global economy sent the markets tumbling to a sharply lower close with the Dow plummeting 140 points to 17,750. Nasdaq plunged 54 points to 4,763.

On the upside

RoundTable Healthcare Partners will pay a premium of approximately $140.3 million in cash to acquire Symmetry Surgical (Nasdaq: SSRG).

Third quarter earnings for Fabrinet (NYSE: FN) nearly doubled to top analyst estimates and the company forecast current quarter results ahead of expectations.

TriNet Group (NYSE: TNET) reported better than expected earnings for the first quarter.

On the downside

Walter Investment Management (NYSE: WAC) widened losses significantly for the first quarter.

The Brink's Company (NYSE: BCO) widened first quarter losses as revenue fell.

Falling crude oil prices weighed down shares of Chesapeake Energy (NYSE: CHK) and Legacy Reserves (Nasdaq: LGCY).

In the broad market, declining issues outpaced advancers by a margin of more than 3 to 1 on the NYSE and by more than 5 to 2 on Nasdaq. The broader S&P 500 tumbled 18 points to 2,063. Bitcoin gained $3 to $447.