Based on the news about the stock in the past five trading days, please predict the rise or fall of the stock in the next trading day. If the stock is predicted to rise in the next trading day, please output [Rise], if the stock is predicted to fall in the next trading day, please output [Decrease].

Date:2021-05-19, Stock:XEL, The news for the past five days is as follows:
2021-05-12: NEWS1: Xcel Energy (XEL) Rides on Investments & Clean Energy Efforts.NEWS2: Did You Participate In Any Of Xcel Energy's (NASDAQ:XEL) Fantastic 102% Return ?.NEWS3: Xcel Energy strikes deal to purchase low-emissions gas in Colorado.
2021-05-13: NEWS1: Xcel Energy CEO Fowke to retire from role, after 10 years as CEO.NEWS2: Xcel Energy’s Fowke announces plans to retire as CEO in August.
2021-05-14: nan
2021-05-17: nan
2021-05-18: nan

Answer: Decrease