The London-based fintech company offers retail investors a piece of the action when corporates large and small want to raise funds quickly.
LSEG is in detailed talks about investing in PrimaryBid, Sky News has reported, with the funding expected to be bigger than the £7mln it raised last year.
The PrimaryBid platform has been coming into its own of late, with small investors given the chance to participate in several FTSE 350 accelerated placings.
Catering giant Compass paved the way in mid-May and has since been followed by Ocado, Taylor Wimpey, IWG, William Hill, SSP, Segro, Aston Martin and Biffa, as well as fundraisings by smaller caps including Open Orphan, Tissue Regenix, Air Partner and Sareum.
The app works by quickly pooling all of the investments from interested private investors into one single purchase via one of the investment banks or brokers handling the larger fundraising.