GRAND RAPIDS — Michigan Capital Network plans to form a fourth venture capital fund. GRAND RAPIDS — Michigan Capital Network plans to form a fourth venture capital fund. Want more news like this every weekday? Get the free MiBiz Morning Edition newsletter. The Grand Rapids-based Michigan Capital Network notified federal securities regulators in a recent filing of plans to raise $25 million from investors. Michigan Capital Network’s Venture Fund IV L.P. requires a minimum investment of $250,000, according to the July filing with the U.S. Securities and Exchange Commission.