Netflix's stock has surged after it gained several members in the past year. The streaming service is far ahead of its rivals Amazon's Prime Instant Video and Sky's Now TV.

The Guardian reported that about a quarter of UK households have subscribed to Netflix. It was revealed that 1.4 million have joined the streaming service in 2015 to watch popular series like "House of Cards."

By the end of last year, more than 5 million (24% of the total) have subscribed to Netflix. This is a 10% increase compared with the subscriptions in 2014.

The publication noted that Netflix has blazed ahead of its competitors such as Amazon's Prime Instant Video or Sky's Now TV. Its continued growth is also faster than other services.

"According to the data, there are about 1.6 million households subscribing to Amazon's service in the UK, up about 300,000 over 2015, and fewer than 1 million signed up to Sky's Now TV," The Guardian wrote. "In total, more than 6.5 million households are signed up to some sort of video-streaming service."

Netflix is believed to be the market leader. The streaming service's growth has easily outpaced its rivals.

According to TCC, Netflix's stock has surged over time as it gained many viewers. It has also caused the switch from traditional TV.

"There has been a drop of 50% in traditional TV viewership in 2015 due to Netflix, as per Moffett Nathanson analyst," the website wrote. "Some analysts see it as growth for Netflix and others consider it as death of traditional TV networks industry."

Netflix's stock has been increasing over the past five years and has almost tripled in its value. In 2015, the company's stock was able to perform well and it was recognized by the S&P 500 Index.

Conservative investors are worried, though, that Netflix's stock may experience a drop in stock price soon since "it has been on the surge" for so long. On the other hand, other investors believe that the business will continue to grow further.