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:NVS, The news for the past five days is as follows:
2021-10-11: NEWS1: Sandoz completes acquisition of GSK’s cephalosporin business, reinforcing leading global position in antibiotics.
2021-10-12: NEWS1: bluebird (BLUE) Gives Details on Oncology Business Spinoff.
2021-10-13: NEWS1: Why CRISPR Therapeutics Stock Is Sinking Today.
2021-10-14: NEWS1: 3 No-Brainer Stocks to Buy Right Now.NEWS2: Scientist behind Vertex CF drugs launches new startup with Atlas Venture.
2021-10-15: nan

Answer: Decrease