Shares of Indian Railway Catering and Tourism Corporation (IRCTC), the online ticket booking arm of Indian Railways, rose as much as 5 per cent to hit an intraday high of Rs 747.65 on the BSE in an otherwise subdued session after it turned ex-dividend in the previous session. IRCTC stock started trading ex-dividend from Thursday as it had fixed Aubust 19 as the record date to recognise eligible shareholders for the dividend payment for financial year 2021-22.