Benzinga's Top #PreMarket Losers

shares fell 37.40 percent to $11.60 in pre-market trading. Benchmark downgraded Exact Sciences to Hold and lowered the price target from $34.00 to $11.00.

shares tumbled 15.68 percent to $137.87 in pre-market trading after the company issued a weak revenue forecast.

shares declined 8.80 percent to $14.20 in pre-market trading after the company reported weaker-than-expected results for its fiscal second quarter.

fell 2.95 percent to $238.89 in pre-market trading. Analysts at Morgan Stanley maintain Overweight rating for Tesla Motors and lowered the target price from $465 to $450.

shares dipped 2.91 percent to $6.00 in pre-market trading after gaining 0.82 percent on Monday.