I upvoted because the article is a good find.
Where there's wealth involved, there will always be somebody out there to cheat, or work the system to their advantage.
My thinking with this and any other investments, Is let the wales do what they will. They are only playing the players. Eventually the Mass rules the Market. If you believe in your investments - Your in it for the long haul. Short term profits are dangerous to chase and hard earned.
Diversity is key in Investing.
When one things up, another is down and vice versa.
Have some good ole cash on hand for everyday.
Hold some real estate if you can. It crashed here in the USA, but is clawing it's way back now.
Hold some Stocks - They crashed in 2000, and 2007 and both times climbed right back out.
Hold some Precious Metals - Not the Certificates, but the real thing.
I'm personally not a bond Holder, but sometimes those are good to have also.
The Trick is not to have to liquidate a holding when it's down.
If a Whale drives a commodity your holding way up, and there's something you want to buy to make life easier, that's the time to do it.