Short selling mechanism not only can move price to levels justified by fundamentals, and help to improve market efficiency, but to some extent can decrease the manipulation behavior of the insider.

卖空机制不仅可以促使资产的价格向基本价值回归，提高市场的有效性，而且在一定程度上减少了内幕交易者对市场的操纵行为。

youdao

If the indexed funds were indeed pushing the price of oil beyond the level justified by supply and demand, then they would be having trouble selling their futures contracts at such high prices before they matured.

ECONOMIST: The price of oil is beyond $130 a barrel. Where will it stop?