Update app.py

app.py

@@ -106,7 +106,7 @@ prices = {}
 for company, ticker in TICKERS.items():
     start_date = df_multi[df_multi['Company']==company]['date'].min()
     end_date = pd.Timestamp.today()
-    df_prices = yf.download(ticker, start=start_date, end=end_date)[['Open']].reset_index()
+    df_prices = yf.download(ticker, start=start_date, end=end_date)[['Close']].reset_index()
     df_prices.columns = ['Date_', f'Close_{ticker}']
     df_prices['date_merge'] = pd.to_datetime(df_prices['Date_']).dt.normalize()
     df_prices['PctChangeDaily'] = df_prices[f'Close_{ticker}'].pct_change().shift(-1)