It is understood the venture would take over the AMP Capital New Zealand Equity Opportunity Fund, a product Phipps has managed since it launched in 2007.
With about $27 million under management the NZ Equity Opportunity Fund represents only small change to AMP, which has apparently given its blessing to the move.
But the Phipps/Briggs fund - that will probably invest in NZ/Australasian equities - will be entering an increasingly-crowded boutique market.
In the last year alone, the former BT/Westpac NZ investment team spun out as Salt Funds Management while the ex-Tower fund crew were reconstituted as Castle Point Funds Management people after being ditched by Tower's new owner Fisher Funds.
As well, Phipps and Briggs will have to content with a number of slightly-more established boutique NZ share managers like Devon Funds Management, Mint Asset Management (which recently lost its well-known portfolio manager, Shane Solly, to Harbour) and Milford Asset Management.
However, Briggs said there was plenty of space in the market for a differentiated boutique fund.
"Not all funds that sit under the boutique label are the same," he said.