An $8.5 million series B financing round has been closed by Yieldex Inc., an inventory management company. The financing round was led by the Seattle-based Madrona Venture Group, which had Amazon. com Inc as participants in the financial support.

Saying that it makes "advanced inventory management and forecasting technology solutions for addressable media," Yieldex - winner of the top award in Amazon's "Web Services Startup Challenge" in the month of November - is working out a plan to shift its head office from Louisville to New York City.

In a statement, Yieldex' CEO Tom Shields said that as a result of the proposed move of shifting its headquarters, the company - providing digital advertising inventory management to publishers - will be able to situate itself in a high up digital media region.

Shields said that the announced investment would help Yieldex prepare itself better for enduring the "vagaries of the economy." In addition, the change of location would give the company "the ability to attract top talent and continue to develop new products on its DynamicIQ platform to further increase yield and efficiency for its premier customers like Martha Stewart Living Omnimedia Inc."

However, though Yieldex will be operating its sales and marketing functions from New York, the company intends retaining 10 employees at its Louisville location, which will be its development center.