With shares in Medibank Private dipping below their $2.15 float price in recent times, some of the health insurance giant’s 400,000 shareholders will no doubt be thinking about taking out their frustration at the inaugural AGM in Melbourne on October 21.

Unlike with American public companies, one normally easy option for disgruntled investors with ASX-listed companies is to nominate for the board. The Medibank constitution requires candidates to lodge at least 45 business days before the AGM, so the deadline was yesterday, and I was seriously considering a tilt.