$X is one of biggest winner #stocks today. read more:

United States Steel Corporation (symbol: X) was one of the biggest winners
of the trading day today (2016-06-08), gaining 11.11%. The number of shares
that changed hands was 26,201,493, or about 1.5 times the average daily
volume in the stock.
The closing price was $17.7, amounting to a market cap of $2,590,000,000,
about -29.85% off the highest price in the last 12 months. The stock has
been trading at a range between $6.15 and $25.23.
X is in the Steel/Iron Ore industry, part of the Basic Industries sector.