Update

Updated python codes and added Stata do files

Author: Amin-T

CIK_Tic_map.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+"""
+Created on 18 June 2024
+
+@author: Amin
+"""
+
+# Import liberaries and functions
+from sec_api import MappingApi
+import pandas as pd
+import os
+import multiprocessing
+
+mappingApi = MappingApi(api_key='355b10a7c3b55716e8d0ec69c6b24c724d99b050369b066d94fe94dce289b65e')
+
+df = pd.read_csv("Data/T2V_train.csv")
+CIKs = df['CIK'].unique()
+
+def cik_tic_map(cik):
+    return mappingApi.resolve('cik', str(cik))
+
+with multiprocessing.Pool(os.cpu_count()) as pool:
+    output = pool.map(cik_tic_map, CIKs)
+
+cik_ticker_df = pd.DataFrame([x for X in output for x in X]).drop_duplicates(subset=['cik', 'ticker'])
+cik_ticker_df['cik'] = cik_ticker_df['cik'].astype(int)
+
+cik_ticker_df = cik_ticker_df[cik_ticker_df['cik'].isin(CIKs)].reset_index(drop=True)
+
+cik_ticker_df.to_csv('CIK_Ticker_CUSIP.csv', index=False)