Why was TATA motors up today ?

Stocks
1

Loss doubled still stock was up by 2 %

2

there can be many reasons to it and it is very difficult to know the exact answer.
so it is better to stick to your strategy ignoring news.

3
  1. Stock was already near lows
  2. Stocks show opposite moves on result days (or next day) to trap traders
  3. Seems Auto sector may show a bounce in this month as it is also at 5 year lows. That was evident from morning, and may be confirmed over next few sessions
4

Tata Motors and Ashok Leyland are the two most overhyped stocks by investors. I’d stay as far away from auto sector as possible.