The most popular stock trading website is still Opk, according to a study by trading platform TradeStation.

However, the report said the popularity of trading on a stock website is on the rise and Opk stock has seen a significant increase in the past year.

TradeStation surveyed over 1,500 traders in the UK and the US, with the results showing Opk has seen the most growth over the past 12 months.

The report also showed Opk shares have seen a 25 per cent rise over the same period, with a total value of £1.3bn.

Opk is owned by one of the world’s largest tech companies, Apple.

The study, which was published on Monday, was based on a survey of 3,000 people across the US and the UK.

Opak stock, which trades on the trading platform Tradesmart, is owned in part by Facebook.

The company owns around 40 per cent of Opak, and shares have also seen an increased share price in the last 12 months, the study said.

The research also showed that Opak shares have risen in value since the start of the year, increasing from around £8 per share at the start to more than £30 today.