Hitesh portfolio

Hello Sir,
My question is about buyback strategy used by management to arrest falling prices.
Recently, I have noted two examples. One is Tanla, which did not result in much price change. The other one is IEX, which is yet to be played out. My question is, does this kind of buyback help in trend reversal on technical charts? Given that chart is already looking week for such companies, have you ever noted/experienced such strong trend reversal?

Thanks in advance!