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:2021-10-26, Stock:COST, The news for the past five days is as follows:
2021-10-19: nan
2021-10-20: NEWS1: Are Institutions Heavily Invested In Costco Wholesale Corporation's (NASDAQ:COST) Shares?.NEWS2: 4 Surefire Stocks to Buy in the Next Bear Market.
2021-10-21: NEWS1: Costco (COST) Outpaces Stock Market Gains: What You Should Know.NEWS2: Apple Device Shortages Threaten Record-Setting Holiday Blitz.NEWS3: The Zacks Analyst Blog Highlights: Macy's, Hibbett, Best Buy, Target and Costco.
2021-10-22: NEWS1: 3 Safe Stocks to Buy as the Economic Recovery Loses Momentum.
2021-10-25: NEWS1: Target CEO: Supply-chain bottlenecks won't be resolved overnight.NEWS2: Has Costco Wholesale (COST) Outpaced Other Retail-Wholesale Stocks This Year?.

Answer: Decrease