Nova's stock is worthless scrap paper. This past week saw Nova's share price lose 25% of its value closing at 71 yen. At one point during trading it fell to 69 yen.
When METI handed out its punishment of Nova on June 13, Nova's share price started trading at 98 yen and closed at 88 yen. By the beginning of July, the share price had climbed back over 100 yen and hovered around this price range until Friday, July 20. When trading started on on Monday, the 23rd, the share price opened at 96 yen and kept on falling until it reached 71 yen today.