The Alternative Investment Market in London closed up 1.60 points at 825.42 points on the last Friday before Christmas. The exchange hit an intraday low of 823.81 points and a high of 827.15.

London markets were jittery today, Investing.com reported, due to this week’s announcement from the U.S. Federal Reserve that it would begin tapering its stimulus program next month. Mining company stocks were mixed on various European markets, however, those on the AIM fared well today.

Sula Iron and Gold PLC (LSE:SULA), an iron ore and gold exploration company, was a top gainer on the AIM today, rising GBP0.98, or 61.90 percent, to GBP2.55. Oil and gas exploration company Borders & Southern Petroleum PLC (LSE:BOR) also saw major gains, increasing GBP1.75 or 17.07 percent to GBP12.

U.K.- based Sunkar Resources Plc (LSE:SKR), which mines phosphate rock, increased 13.64 percent on the AIM, gaining GBP0.60 to reach GBP5. Other mining companies that experienced gains on the AIM today include Ortac Resources Limited (LSE:OTC), a gold and base metals development company, which increased GBP0.03, or 13.64 percent, to GBP0.25.

Serica Energy Plc (LSE:SQZ), an international oil and gas exploration and production company, was the only mining or energy company that saw major losses on the AIM today. The company lost GBP2.62, nearly 15 percent, to reach GBP15.