Shares of Chesapeake Energy Corp. /zigman2/quotes/201364537/composite CHK 0.00% sank to a fresh 20-year low, pulled down by selloffs in crude oil prices and the broader stock market. The oil and gas company's stock fell 6.9%, putting it on track to close at the lowest level since April 12, 1999. Weighing on the stock, continuous crude oil futures /zigman2/quotes/209723049/delayed CL00 -1.27% dropped 4.4%, following data showing U.S. crude inventories increased for a second straight week. There was also concerns over demand for oil, as the drop in longer-term Treasury yields below yields on shorter-term Treasurys stoked recession fears. The selloff in Chesapeake's stock comes as the SPDR Energy Select Sector ETF /zigman2/quotes/206420077/composite XLE +0.41% lost 3.4%, enough to pace the SPDR ETFs that tracked the 11 key S&P 500 /zigman2/quotes/210599714/realtime SPX +1.00% sectors, with all 29 components trading lower. Chesapeake's stock has now shed 47% over the past three months, while the energy sector ETF has declined 11% and the S&P 500 /zigman2/quotes/210599714/realtime SPX +1.00% has edged up 0.7%.