Patterson-UTI Energy Inc. (NASDAQ:PTEN) is one of the 10 Stocks Investors Are Dumping Right Now. Patterson-UTI fell by 8.01 percent on Wednesday to close at $10.33 apiece, mirroring the decline in energy shares after the US and Iran agreed to a two-week ceasefire. Patterson-UTI Energy Inc. (NASDAQ:PTEN), a leading oil and gas drilling company, declined alongside its counterparts after the prices of benchmark crude oil plunged by 15 percent in intraday trading following President Donald Trump’s announceme ...