What happened

Shares of Chinese internet company Xunlei Ltd. (NASDAQ:XNET) continued to crumble on Tuesday. The stock had gained about 475% since Oct. 12, when the company announced a cryptocurrency project. Those gains have been unraveling as the euphoria fades. The stock was down about 15.4% at market close on Tuesday.

So what

Xunlei announced its "Wanke coin mining" project on Oct. 12. The stock rocketed higher on pure speculation. That rally ended in late November.

XNET Chart

XNET data by YCharts.

On Nov. 29 Xunlei issued a statement regarding its cryptocurrency project in an attempt to quell reckless speculation:

The Company believes that Wankebi is a kind of digital asset and can be used on the Company's internet properties and should not be traded on other transaction platforms. When developing blockchain technology, the Company utilizes such features as openness, transparence and security for their applications. Wankebi is only a symbol of proof for these applications, rather than a subject of speculation.

Since peaking on Nov. 24, shares of Xunlei are down about 45%.

A man with his head on a table, with a slumping stock chart in the background.

Image source: Getty Images.

Now what

Shares of Xunlei are still up more than 200% since the beginning of October, prior to the cryptocurrency announcement. That gain was driven by wild speculation. Cryptocurrency mania may keep the stock afloat for a while, but those speculating on Xunlei shares should be prepared for more declines.