Milford bought Wynyard shares in the company's initial public offering for $1.15 apiece in July and added to its holding when the stock dipped to about $1.05 last month.
Warminger expects the price could appreciate to as much as $2 this year as investors factor in the company's growth prospects over the next two years.
"The outlook for Wynyard is very strong," he said. "They have got an absolutely fantastic product that is relevant to many law enforcement and government agencies around the world and the company is in very early days of selling this product around the world so I think they have got an incredibly strong future ahead of them."
Wynyard, which was spun out of closely held Jade Software, said in November it was on track to meet its annual revenue forecast of $21.5 million after posting first-half sales of $10.3 million.
"The world is their oyster at the moment," said Milford's Warminger. "The places where they have got exposure is still incredibly small compared to the overall pie that they could potentially win so it is really still in its infancy."
Wynyard shares are the top performer on the New Zealand exchange today, giving the company a value of $136 million.