Sierra Trading has been named the biggest stock trading company in America, trading for a profit.
The company, which has been around for more than a century, has seen its stock soar more than 8 percent this year, up from 4.8 percent last year.
The company has more than 6,500 employees, more than any other publicly traded company.
The Sierra Trading company is a subsidiary of Sierra Trading Holdings LLC, the holding company for Sierra Trading International, which is the largest exchange for bitcoin and other cryptocurrencies.
The shares of Sierra trading are up nearly 1 percent since Wednesday morning.
The stock has gained nearly 8 percent since January 3, when the company reported a profit of $1.2 million.
The shares are trading for $21.60, or about $1,100 more than their value on the New York Stock Exchange.
Shares of the company jumped as the company revealed it had signed an agreement with a U.S. bank to allow customers to buy bitcoin futures contracts, the company said in a statement.
The news came shortly after the U.K.-based bank announced it was joining Sierra Trading.
Sierra Trading’s shares have jumped about 25 percent this week.
The stock was up nearly 6 percent Wednesday, before the company’s announcement.
The S&P 500 index is up about 0.8 percentage points, or $3.70, so far this week, according to data from the S&P Dow Jones Indices.
The news comes after the government warned bitcoin exchanges to keep their customer information secure.
On Monday, the U