In the settlement, Infosys denied the allegations and asserted of no wrongdoings.

Fine will be paid to settle allegations of misclassification of foreign workers and tax fraud, officials said.

Reliance Industries Limited (RIL), ICICI Bank, Kotak Mahindra Bank and Infosys were among the gainers.

Some listed companies, especially due to their family-driven nature, have been found to be wanting on the related-party transactions.

All material information has been disclosed by the company as per Sebi norms and the firm's materiality policy.

When the first letter became public on 22 October, Infosys stock plunged about 16 per cent and since then, the stock has recovered 9.5 per cent.

Investors should draw their own conclusions. Whatever we have to do, we are doing, said Sebi chief Ajay Tyagi.

The letter was in reply to the NSE’s request to the company to explain why it had not disclosed the receipt of the letter.

RIL, HUL, HDFC, ITC, Infosys, HDFC Bank and SBI were the other firms which witnessed a rally in their market capitalisation.

Sources said the SEBI will provide all possible help to the US Securities and Exchange Commission (SEC).