One share strategy might not work here for all small investors because no of shares reserved for small investors in this buyback is low that is 49180(as per preliminary details).In recently concluded eclerx buyback,no of total applications is 56946.If shareholding pattern as on closing of q4 2022-23 is published before the record date(yet to announce)a more clear picture can be obtained.Though 1 share strategy might work in other current offers like sportking,vrl,hgs and symphony.