$MCRB is one of biggest losers #stocks today. read more:

Seres Therapeutics, Inc. (symbol: MCRB) was one of the worst losers of the
trading day today (2016-06-14), losing -11.57%. The number of shares that
changed hands was 679,591, or about 3 times the average daily volume in the
stock.
The closing price was $30.51, amounting to a market cap of $1,210,000,000,
about -41.33% off the highest price in the last 12 months. The stock has
been trading at a range between $21.12 and $52.0.
MCRB is in the n/a industry, part of the n/a sector.