With Hatch, you can usually access newly IPO'd shares the minute they hit the public market. However, for it to be listed on Hatch, the company needs to meet our broker's criteria. Once the newly IPO'd company hits the public market, you can usually place an order right away.
Just a note, everyone can be waiting up to six hours the day of an IPO listing as they settle on buy/sell price. Not to worry! You won't miss out on the opportunity - every investor will be in the same boat waiting for the price to settle. You can't place any orders until the company is trading publicly, and we're unable to take pre-orders.
To make sure you're up to speed with up-and-coming IPO's - here are a few links that might help keep track:
NASDAQ IPO calendar: https://www.nasdaq.com/market-activity/ipos
Marketwatch IPO calendar: https://www.marketwatch.com/tools/ipo-calendar