Question

What do u mean by buy-back? is it different from redemption?

Answer 1

Stock buyback refers to publicly traded companies buying back their shares from shareholders. This reduces the amount of outstanding shares in the market and typically, based on simple market dynamics, raises the stock price. .For instance, if a buyback increases the share price, the earnings per share ratio will go up.
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Answer 2

Buy back or Repurchase means companies will buy back shares either to increase the value of shares still available, or to eliminate any threats by shareholders who may be looking for a controlling stake. The repurchase of outstanding shares by a company in order to reduce the number of shares on the market.

Buying back the company's own shares has some advantages. ... On the other hand, redemption of shares refers to a companybuying back its Preference Shares (PS) by paying back the “loans' to preference shareholders.