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:2021-06-30, Stock:NVO, The news for the past five days is as follows:
2021-06-23: nan
2021-06-24: nan
2021-06-25: nan
2021-06-28: NEWS1: Novo Nordisk A/S – Share repurchase programme.NEWS2: Novo Nordisk's Higher Dose Of Semaglutide Trumped 1-mg Predecessor On Blood Sugar, Weight Reduction.
2021-06-29: NEWS1: Walmart aims to aid in affordable diabetes care with its private brand analog insulin.NEWS2: Now on Sale at Walmart: Insulin That’s Cheaper Than Brands from Lilly, Sanofi, or Novo Nordisk.NEWS3: Walmart to launch lower-priced insulin offering savings of up to 75%.NEWS4: Walmart, Novo Nordisk Unveil Own Low-Cost Brand Insulin.NEWS5: Walmart launches private label insulin brand at steep discounts for diabetes patients.

Answer: Decrease