diff --git a/main.py b/main.py
index 74aafbc..3b223a7 100644
--- a/main.py
+++ b/main.py
@@ -527,7 +527,6 @@ def copy_portfolio():
     stock_list = request.form.get('stockList')
     stock_list = json.loads(stock_list)
     session['tw'] = 0
-    print(stock_list)
     return render_template('strategy_tw.html', data_us = data_us, data_tw=data_tw, stock=stock_list)
     
 @app.errorhandler(404)
diff --git a/portfolio_builder.py b/portfolio_builder.py
index 23119f8..ef6cd8e 100644
--- a/portfolio_builder.py
+++ b/portfolio_builder.py
@@ -80,12 +80,11 @@ class MVO(object):
         g1=manual_ret/stdPort
         g2=np.mean(retPort)*stdPort**(-3)*cov_sor@w
         return g1-g2
-    
+    # equivalent opt problem with min vol
     @staticmethod
     def volatility(w, ret):
         retPort = ret@w # T-dimensional array
-        stdPort = np.std(retPort) 
-        return stdPort
+        return np.std(retPort) 
     @staticmethod
     def volatility_grad(w, ret, cov):
         retPort = ret@w # T-dimensional array
diff --git a/static/js/addStock.js b/static/js/addStock.js
index 202561f..162cd09 100644
--- a/static/js/addStock.js
+++ b/static/js/addStock.js
@@ -1,8 +1,8 @@
 // Initialize empty stock list
 // let stockList = ['2330.TW'];
 var stockList = [];
-    $('#stock-list span').each(function(){
-        stockList.push($(this).text());
+$('#stock-list span').each(function(){
+    stockList.push($(this).text());
 });
 console.log(stockList);
 let currentList = [];
diff --git a/static/js/view.js b/static/js/view.js
deleted file mode 100644
index 32e761c..0000000
--- a/static/js/view.js
+++ /dev/null
@@ -1,56 +0,0 @@
-const wlayout = {
-'autosize': true,
-'barmode': 'relative',
-'title': {'text': ''}, 
-'xaxis': {'anchor': 'y', 'domain': [0.0, 1.0], 'title':''}, 
-'yaxis': {'anchor': 'x', 'domain': [0.0, 1.0], 'title':''},
-'margin': {'l': 50, 'r': 50, 't': 10, 'b': 50},
-'legend': {'yanchor': 'bottom', 'y': 1.3, 'xanchor': 'left', 'x': 0, 'orientation':'h',
-            'font': {'size':8}
-}
-};
-const rlayout = {
-    'autosize': true,
-    'title': {'text': ''}, 
-    'xaxis': {'anchor': 'y', 'domain': [0.0, 1.0], 'title':'', 'rangeslider': {'visible': true}
-    }, 
-    'yaxis': {'anchor': 'x', 'domain': [0.0, 1.0], 'title':''},
-    'margin': {'l': 40, 'r': 20, 't': 30, 'b': 50},
-    'legend': {'yanchor': 'top', 'y': 1.3, 'xanchor': 'left', 'x': 0.01, 'orientation':'h'}
-};
-const blayout = {
-    'autosize': true,
-    'title': {'text': ''}, 
-    'xaxis': {'anchor': 'y', 'domain': [0.0, 1.0], 'title':''}, 
-    'yaxis': {'anchor': 'x', 'domain': [0.0, 1.0], 'title':''},
-    'margin': {'l': 40, 'r': 20, 't': 50, 'b': 70},
-    'legend': {'yanchor': 'top', 'y': 1.3, 'xanchor': 'left', 'x': 0.01, 'orientation':'h'}
-};
-var w = {{ data.weight|safe }};
-var r = {{ data.ret|safe }};
-var b = {{ data.bar|safe }};
-Plotly.newPlot("weight", w.data, wlayout, {responsive: true});
-Plotly.newPlot("price", r.data, rlayout, {responsive: true});
-Plotly.newPlot("bar", b.data, blayout, {responsive: true});
-
-$('#copy-port').click(function(event) {
-    var stockList = [];
-    $('.asset').each(function(){
-        stockList.push($(this).text());
-    });
-    // alert(currentList.includes(texts));
-    if (stockList.length > 0) {
-        $.ajax({
-            url: '/copyPort', //todo create_strategy
-            method: 'POST',
-            data: { stockList: JSON.stringify(stockList) },
-            success: function(response) {
-                console.log('success');
-                document.write(response);
-            },
-            error: function(xhr) {
-                console.log('Error submitting stock list: ' + xhr.responseText);
-            }
-        });
-    }
-});
\ No newline at end of file