final fix

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

.idea/inspectionProfiles/profiles_settings.xml

+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file

.idea/modules.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/stocks.iml" filepath="$PROJECT_DIR$/.idea/stocks.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file

.idea/stocks.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="TestRunnerService">
+    <option name="PROJECT_TEST_RUNNER" value="Nosetests" />
+  </component>
+</module>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

correlation_test_all.py

@@ -48,7 +48,7 @@ def main():
             av_gain_dict[i["ticker"]] += float(i["open"]) - prev_price_dict[i["ticker"]][LEN_PREV - 1]
             count_dict[i["ticker"]] += 1
 
-        if len(prev_price_dict[i["ticker"]]) > LEN_PREV:
+        if len(prev_price_dict[i["ticker"]]) >= LEN_PREV:
             prev_price_dict[i["ticker"]].pop(0)
         prev_price_dict[i["ticker"]].append(float(i["open"]))