That acquisition followed its $65 million purchase of electronics retailer Noel Leeming and its buyout of supply chain management firm Complete Entertainment Systems in December. And in September the company acquired import business Insight Traders.
The Warehouse is placing much focus on developing its online footprint in a retail market where internet-based sales are increasing rapidly.
Almost 6 per cent of retail sales were made online last year, up from 5.1 per cent in 2011, according to research by PwC and Frost & Sullivan.
But Powell said the Shop HQ purchase was part of a "broader multi-channel approach" and he didn't accept the notion that The Warehouse's network of 92 Red Shed stores, which are undergoing a $130 million revamp, no longer had strong growth prospects.
"Red Sheds is a strong business and it's had nine quarters of same store sales growth - we'll keep pushing for that," he said. "We've become a multi-business group of which the Red Sheds is our core."
In March The Warehouse reported an 18.3 per cent lift in half-year group revenue to $1.1 billion and it has been the sixth best-performing NZX-50 stock - in terms of share price growth - this year, rising about 28 per cent.
Milford Asset Management portfolio manager Mark Warminger said small acquisitions like Shop HQ were low-risk. Shares in The Warehouse closed up 4c at $3.64 last night.