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:2018-04-23, Stock:COST, The news for the past five days is as follows:
2018-04-16: NEWS1: Wells Fargo upgrades Costco to outperform from market per....NEWS2: Costco's Next Special Dividend May Be Coming Sooner Than Investors Realize.NEWS3: Wells Fargo: Buy this big box retailer.NEWS4: Wells Fargo says Costco looks to be on the cusp of next l....NEWS5: Costco Posting Strong Gain On Upgrade By Wells Fargo.NEWS6: Costco Posting Strong Gain On Upgrade By Wells Fargo.NEWS7: Trade Fears Hurt Consumer Sentiment: Should Retailers Worry?.NEWS8: Trade Fears Hurt Consumer Sentiment: Should Retailers Worry?.NEWS9: Nasdaq 100 Movers: TSLA, JBHT.NEWS10: Nasdaq 100 Movers: TSLA, JBHT.NEWS11: Costco Wholesale Corporation's Stellar Sales Growth Continued in March.NEWS12: Costco Wholesale Corporation's Stellar Sales Growth Continued in March.NEWS13: Is Costco Wholesale Corporation a Buy?.NEWS14: Is Costco Wholesale Corporation a Buy?.NEWS15: Costco upgraded by Wells Fargo, predicts special dividend soon.NEWS16: Today’s Research Reports on Stocks to Watch: Nike and Costco.NEWS17: Costco Wholesale Corporation&apos;s Stellar Sales Growth Continued in March.NEWS18: Is Costco Wholesale Corporation a Buy?.
2018-04-17: NEWS1: The Hidden Metric That Allows Amazon to Dominate Online Retail.NEWS2: Costco to Gain on Tax Benefits: Wells Fargo.NEWS3: Here Are Factors Influencing Skechers' (SKX) Q1 Earnings.NEWS4: Here Are Factors Influencing Skechers' (SKX) Q1 Earnings.NEWS5: Notable ETF Inflow Detected - IVE, COST, USB, TWX.NEWS6: Notable ETF Inflow Detected - IVE, COST, USB, TWX.NEWS7: What Does the March Tick-up in Sales Mean for Retailers?.NEWS8: What Does the March Tick-up in Sales Mean for Retailers?.NEWS9:  NEWS BITES: Sean Hannity is Michael Cohen's mystery client, Comey's book hits shelves today, TaskRabbit shuts down after breach.NEWS10: Costco Wholesale Corporation Stock Looks Overextended.NEWS11: How Amazon’s Prime Fee Hike Affected Its Subscription Business.NEWS12: Costco Stock Could Break Out After Analyst Upgrades.NEWS13: Why Analysts Are Maintaining a ‘Buy’ Rating on Costco Stock.NEWS14: Here’s What’s Pushing Costco Stock Higher.
2018-04-18: NEWS1: Notable Wednesday Option Activity: COST, NUE, AXP.NEWS2: Notable Wednesday Option Activity: COST, NUE, AXP.NEWS3: 8 Companies Amazon Is Killing.NEWS4: How Analysts Rate Consumer Stocks.NEWS5: Walmart: Discounters Are Eating Up the Grocery Growth.NEWS6: Amazon Expands Prime Discounts: What’s Its Long-Term Plan?.NEWS7: These Stocks Were the Top Performers in Consumer Sector Last Week.NEWS8: The Hidden Metric That Allows Amazon to Dominate Online Retail.NEWS9: The Hidden Metric That Allows Amazon to Dominate Online Retail.
2018-04-19: NEWS1: How Amazon Prime Compares to These 3 Leading Membership-Based Businesses.NEWS2: How Amazon Prime Compares to These 3 Leading Membership-Based Businesses.NEWS3: How Amazon Prime Compares to These 3 Leading Membership-Based Businesses.NEWS4: American Express Company Is Nothing to Write Home About.NEWS5: American Express Company Is Nothing to Write Home About.NEWS6: Amazon Prime Time Numbers Exceed Loftiest Estimates.NEWS7: Amazon Prime Time Numbers Exceed Loftiest Estimates.NEWS8: Amazon: Bezos reveals the shocking number of Prime members it has.NEWS9: Amazon Prime's Membership and Retention Are Higher Than Costco's.NEWS10: Amazon Prime has more members than Costco, Bezos reveals.NEWS11: Amazon Prime has more members than Costco, Bezos reveals.
2018-04-20: NEWS1: American Express Company Is Still a Double-Digit Play.NEWS2: American Express Company Is Still a Double-Digit Play.NEWS3: Nordstrom gains apparel market share as Amazon heads toward the top.NEWS4: MARKETS: Apple leads tech lower, consumer staples drops, oil falls as rig counts climb, Bitcoin jumps.NEWS5: Target's Same-Day Delivery Efforts to Drive Customer Count.NEWS6: Target's Same-Day Delivery Efforts to Drive Customer Count.NEWS7: Yahoo Finance Live: Market Movers - Apr 20th, 2018.NEWS8: The Key to Amazon.com, Inc. Stock is Company Culture.NEWS9: The Key to Amazon.com, Inc. Stock is Company Culture.

Answer: Decrease