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:2021-09-21, Stock:COST, The news for the past five days is as follows:
2021-09-14: nan
2021-09-15: NEWS1: Costco (COST) Gains But Lags Market: What You Should Know.NEWS2: Walmart's (WMT) Sam's Club Takes Minimum Wage Up to $15.
2021-09-16: NEWS1: Costco (COST) Earnings Expected to Grow: What to Know Ahead of Next Week's Release.NEWS2: Top 10 Stock Picks of Ryan Frick’s Dorsal Capital: Facebook, Snap and More.NEWS3: Sitting on Cash? These 2 Stocks Are Great Buys..
2021-09-17: NEWS1: Cramer's Mad Money Recap: FedEx, Costco, Nike.NEWS2: Costco’s stock set up to fall after earnings, and that’s the time to buy it, analyst says.NEWS3: Coscto’s stock set up to fall after earnings, then buy it, analyst says.NEWS4: Costco Wholesale (NASDAQ:COST) Is Aiming To Keep Up Its Impressive Returns.NEWS5: Kroger's Investor Presentation: 3 Takeaways.NEWS6: Costco Analyst Reviews Mixed Ahead of Earnings Report.
2021-09-20: NEWS1: Costco (COST) Q4 Earnings in Focus: Key Factors to Watch.NEWS2: Retail Sales Jump in August: 5 Solid Stocks to Buy.NEWS3: Oracle, FedEx, Nike, Costco and JPMorgan are part of Zacks Earnings Preview.

Answer: Rise