Anchor investor lock-in
Regulation & taxThe lock-in on shares allotted to anchor investors in a public issue, released in two tranches — 50% at 30 days from allotment and the remainder at 90 days.
In plain terms
Split in two deliberately, so the entire anchor book could not become saleable on a single day. Both dates are arithmetic from the allotment date, which makes this the least private information in the market.