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After absolutely dominating the market last year, the technology sector has taken a mighty hit this week, down 3.3%, the same hit the S&P 500 has taken. There is no question that some of the tech leaders may have been the victim of start-of-the-year profit taking to roll 2014 gains in to 2015. In some cases, tax-loss selling may be the culprit to print against those gains. The real question for many investors is simple: Is the tech party starting to wind down?

A new research report from the Information Technology and Hardware analysts at UBS tracks the stocks that are the most overbought and oversold on a relative strength basis. Needless to say, this week’s volatility has skewed numbers for the stocks that were oversold even more. Here are five high-profile technology stocks that showed up on the UBS oversold screen.

IBM’s software unit missed earnings badly last year, and Citrix is poised to grab business in this arena. By reason, some investors could consider that Big Blue may be keeping an eye on the company, looking to strengthen existing business while eliminating a very formidable contender in the space.

The Shanghai Composite dropped nearly 8% as investors reacted to the ruling, which will prevent the brokers from opening new margin trading accounts for three months.

Shares of two affected brokerages -- Citic Securities and Haitong Securities -- quickly lost 10%, the daily limit for stocks trading in Shanghai. Guotai Junan Securities, the third broker, was trading down more than 10% in Hong Kong. The fallout was limited to stocks trading in China. Japans Nikkei gained nearly 1%, and most regional indices finished higher.

Deng Ge, a spokesman for the China Securities Regulatory Commission, said the brokers were caught rolling over margin trading accounts for a large number of clients "and had been warned," according to Reuters.