But market insiders say there is still plenty of appetite for listings, particularly those that do not involve significant private equity sell-downs, which often attract scepticism because such investment firms tend to buy low and sell high.
Metro chief executive Nigel Rigby yesterday said the company was well placed to deliver earnings growth.
A source said documentation for Wherescape's offer was being prepared and a listing announcement was drawing closer.
Wherescape develops data warehousing products that allow organisations to store, organise and access large amounts of information.
Chief executive Michael Whitehead said in January that the company, whose revenue was understood at that time to be around $18 million, had been profitable since it was founded in 2002.
Another source said a long-anticipated listing from Orion Health could take place in October or November.
Chief executive Ian McCrae confirmed last week that the firm - whose cloud-based software allows doctors to store and look up patient records online - was having talks with First NZ Capital and Deutsche Craigs over a possible listing.
Orion recently said it could raise capital through an NZX main board listing.
"Whether the company goes ahead with that process - and the exact timing - is still to be determined as it will depend, among other things, on market conditions," Orion said.
Software firms Eroad and Vista Group have confirmed listing plans and expect to float next month, while mobile payments provider Pushpay is targeting an NZAX compliance listing this month.
IkeGPS, which develops technology for measuring and geo-locating objects, expects to list on July 23.