You said "copper is hitting 3 weeks high on 34% drop in Shanghai inventory. I really believe the Chinese are manipulating the copper price. How can Shanghai inventory fluctuate so wildly?"
Chinese New Year is Wednesday February 9th. Most of the country shuts down for a week so workers can travel back home and eat, drink, and spend just like Americans at Thanksgiving and Christmas, but on an even bigger scale.
Manufacturers who use copper were loading up this month to get goods produced and shipped off in the next week before they close down for a few days. It's not manipulation, just the influence of another country's culture on international prices.
Now that China's an economic power, we may now have a "Chinese New Year" effect on markets the way we've historically had the "January" effect and so on.
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