Tata motors stock has been in bull run since last 2 years. Observing the weekly chart shows a clear formation of Inverted Head & shoulders pattern in the stock. It can test the neckline definitely in near future which is around 500-520 which is almost 7-8% from CMP. A weekly closing above 520 levels or above 52 week high of 537 can make the stock move to its ATH levels of 600 and above.