Update sharp_ratio.py (#57)

- Update sharp_ratio.py (e0c9b1756021243c61d0295fa73d8e730dac1f62)


Co-authored-by: handepehlivan <handepeh@users.noreply.huggingface.co>

sharp_ratio.py

@@ -11,7 +11,8 @@ def cumulative_return(stocks,choices):
     symbols, weights, investing_style, benchmark, rf, A_coef = choices.values()
     tkers = sorted(set(stocks['Ticker'].unique()))
     #preprocess
-    stocks = stocks.pivot(index="Date", columns="Ticker", values="Adj. Close")
+    #stocks = stocks.pivot(index="Date", columns="Ticker", values="Adj. Close")
+    
     logRet = np.log(stocks/stocks.shift())
     log_returns = np.log(stocks/stocks.shift())
     tickers_list = symbols.copy()