In many markets, changes in the spot price are partially predictable. We show that when this is the case: (1) although unbiased, traditional regression estimates of the minimum variance hedge ratio are inefficient, (2) estimates of the riskiness of both hedged and unhedged positions are biased...

In many markets, changes in the spot price are partially predictable. We show that when this is the case: 1) although unbiased, traditional regression estimates of the minimum variance hedge ratio are inefficient, 2) estimates of the riskiness of both hedged and unhedged positions are biased...