The official websites of Election Commission of India (ECI), National Stock Exchange (NSE), and Bombay Stock Exchange (BSE) confirm the claim.
The Candidate Affidavit Management database maintained by the ECI contains the list of candidates who filed nomination for General Election 2019. As the leader of the Bharatiya Janata Party, Amit Shah's affidavit uploaded on the website contains names of companies in which he has shares and securities. Many of the companies listed in the affidavit have a market capital of more than Rs. 20,000 Cr, such as L&T and Reliance Industries, which come under the large-cap category. Others, such as Mahendra Mills and UCO Bank, come under the mid-cap category for companies more than Rs. 5,000 Cr but less than Rs. 20,000. This can be confirmed by the 'Market Capitalization of Companies as on January 31, 2019' report, published by the NSE.