It was a higher close for the markets with the Dow gaining 63 points to 22,331 a day before the Federal Reserve's policy meeting. Nasdaq rose 6 points to 6,454.

On the upside

Itron (Nasdaq: ITRI) will pay a premium of approximately $830 million in cash to acquire Silver Spring Networks (NYSE: SSNI).

Nabriva Therapeutics (Nasdaq: NBRV) reported positive results from a Phase 3 of lefamulin in patients with community-acquired bacterial pneumonia.

Dimension Therapeutics (Nasdaq: DMTX) received an unsolicited acquisition offer from Ultragenyx Pharmaceutical (Nasdaq: RARE) for a premium of approximately $138 million.

On the downside

Aaron's (NYSE: AAN) entered oversold territory.

Profit taking weighed down shares of Pier 1 Imports (NYSE: PIR).

Shares of KEYW Holding (Nasdaq: KEYW) fell for the fourth day.

In the broad market, advancing issues outpaced decliners by a margin of nearly 4 to 3 on the NYSE and by more than 3 to 2 on Nasdaq. The broader S&P 500 added 3 points to 2,503. Bitcoin surged $312 to $4,003.