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:2021-10-18, Stock:COST, The news for the past five days is as follows:
2021-10-11: NEWS1: Exports in limbo as supply chain disruptions persist.NEWS2: Top Costco Shareholders.
2021-10-12: NEWS1: Costco (COST) Thrives on Stellar Comparable Sales Trend.NEWS2: Costco Keeps Rolling With Strong September Sales.
2021-10-13: NEWS1: Costco Wholesale Corporation Announces Quarterly Cash Dividend.NEWS2: Supply chain issues could 'last until the early parts of 2023,' shipping analyst explains.NEWS3: Here's Why Costco Can Continue Its Growth Streak.
2021-10-14: nan
2021-10-15: NEWS1: Costco (COST) Gains But Lags Market: What You Should Know.NEWS2: Retail companies that are best positioned for the fourth quarter amid supply chain issues.NEWS3: Why shipping delays won't torpedo Walmart.NEWS4: 3 Stocks That Make Your Favorite Snacks.

Answer: Rise