OSLO, Oct 8 (Reuters) - SoftBank-backed robotics firm AutoStore said on Friday its planned stock market listing could value the company at up to 103 billion Norwegian crowns ($12.0 billion).

AutoStore announced plans on Sept. 28 for an initial public offering (IPO) to take place on the Oslo stock exchange in October, with the aim of raising $315 million in fresh cash and allowing existing owners to sell some holdings. ($1 = 8.5840 Norwegian crowns) (Reporting by Terje Solsvik, editing by Gwladys Fouche)