Japan's $617B Trading Error Raises Controls Concern

A significant trading error occurred at 9:25 AM involving over-the-counter trades, causing a stir among traders. The error was reportedly due to a mistake in the number of shares rather than their value. The Japan Security Dealers Association confirmed it was an error, but details remain unclear. The error involved major companies like Toyota, with 2 billion shares mistakenly ordered, though the orders were canceled before affecting share prices. The incident highlights the importance of vigilance in trading systems.

What is the speculation regarding the nature of the mistake made during the trades?

Which company had a significant number of shares involved in the trades?