We evaluate differential effects of the trading activity of two classes of traders: hedgers and general investors, on the volatility of the NYMEX crude oil futures returns. It appears that the rebalancing activity of oil hedgers has a significant and positive effect on the oil futures...

I investigate the impact of the Global Financial Crisis (GFC) on the returns and volatilities of eleven major European share markets, and test the proposition that the GFC developed over two stages: a subprime mortgage crisis (pre-Lehman), and a more severe global liquidity shortage phase...