Markets plunge over clashes in Hong Kong

Pro-democracy protestors clashed with riot police in Hong Kong over the weekend to send the markets tumbling to a sharply lower open with the Dow plunging 115 points to 16,997. Nasdaq fell 19 points to 4,493.

On the upside

Encana (NYSE: ECA) will pay a premium of approximately $5.93 billion in cash to acquire Athlon Energy (NYSE: ATHL).

Vista Equity Partners will take Tibco Software (Nasdaq: TIBX) private for a premium of approximately $3.98 billion.

SoftBank has offered a premium of approximately $3.4 billion to purchase DreamWorks Animation (Nasdaq: DWA).

On the downside

Civeo (NYSE: CVEO) will continue operations as a corporation rather than convert to a real estate investment trust and will redomicile to Canada.

Profit taking weighed down shares of Petrobras (NYSE: PBR).

Endologix (Nasdaq: ELGX) trimmed its full year earnings and revenue outlook.

In the broad market, declining issues outpaced advancers by a margin of more than 5 to 1 on the NYSE and by nearly 7 to 2 on Nasdaq. The broader S&P 500 fell 13 points to 1969. Bitcoin added $4 to $377.