The much-awaited merger of HDFC Bank and HDFC is expected to be completed next month. Market experts predict that the announcement of the merger date will trigger further buying interest and lead to both stocks hitting record high levels. While HDFC twins have underperformed the Nifty in the last one-month period, both are trading 5% away from their respective 52-week high levels and are up 5-6% each in the last 3 months. The merged entity is likely to trade under the HDFC Bank ticker before July 20. An eligible shareholder will get 42 shares of HDFC Bank for every 25 HDFC shares held by them.