GM stock is now quoted around $0.69 per share, and trading isn’t happening, i.e, “volume” traded is zero.
Why isn’t the stock being traded?
That's old GM stock. It's worthless. It kept trading after GM bankruptcy for scammers and suckers, so the short sellers of GM couldn't just wave hands and take their profits.
The new GM stock isn't trading yet. GM itself is not going to sell any common shares, so the sale of GM shares is coming from the UAW and/or the U.S. gummit. It would have to trade at $133, plus interest, in order for the taxpayer to break even. The GM bondholders were screwed out of about $30 billion, as GM did have assets.