Oil prices
Brent crude futures set to expire in October rose by 0.5 percent to $79.92 a barrel
Brent crude futures declined by 32 cents, or 0.39 percent, to settle at $81.11 per barrel
Brent oil futures for October delivery advanced 0.8 percent to reach $79.59 per barrel
Brent oil futures expiring in October edged up 0.1 percent to $77.26 per barrel
Brent oil futures fell 0.1 percent to $75.95 a barrel
Brent crude futures declined by 0.1 percent, settling at $77.11 per barrel
Brent crude futures dropped 0.7 percent, or 53 cents, to $77.13 per barrel
Quantitative and algorithmic trading account for 70 percent of daily oil futures trading
Brent crude futures declined by 13 cents, or 0.2 percent, to $79.55 per barrel
Brent crude futures, expiring in October, fell 0.1 percent to $80.94 a barrel
Brent crude futures rose 0.21 percent to $79.93 a barrel
