Pension funds usually invest a largish proportion in the more reputable shares. On average shares have gone down by about a third, and so has your pension, but only if you draw it this week. Over a long time they'll go up again, so it doesn't matter. And if you're about to retire, they usually convert your bit into gilts, which don't normally go down in value.
I'm pleased to see that the gamblers got caught on VW. On the basis that the value of VW shares was going down, they sold lots of shares they didn't own (anywhere else you'd get locked up for that), on the basis that they could buy them cheaply in a couple of days time, and all without laying out any cash. Porsche announce that they're going to buy 75% of VW, and the price of the shares rockets, leaving the @rseholes having to buy shares at twice the price to complete the deals.
Well done Porsche. You wouldn't like a major stake in RBS or Barclays by any chance.