By Julie Wernau

Coffee futures plummeted Thursday, on course for a protracted pullback after the contract reached above several technical averages, encouraging speculators to take profits.

Arabica coffee for December delivery lost 4.9% to end at $1.6185 a pound on the ICE Futures U.S. exchange.

"We've had a very big run over the last few months. Coffee got very extended on a technical level, way above all normal metrics," said Adam Sarhan, chief executive of 50 Park Investments.

Mr. Sarhan is bullish on coffee in the near-term but said he pulled out of the market several days ago over concerns about risks the outcome of the U.S. presidential election might bring to the markets. Now, he said, he plans to buy the next bounce in the contract following the dip with the hopes of riding momentum trading higher.

Coffee has become a favored bet recently among hedge funds and other money managers. As of last Tuesday, bullish bets outweighed bearish ones by the highest margin so far this year--at 56,863 contracts--and bets by speculators in the market were also at their highest so far this year, according to U.S. Commodity Futures Trading Commission data.

The markets have been largely driven by concerns over the supply of the more acerbic robusta bean, typically found in instant coffee and cheaper blends. A post-election selloff in the Brazilian real hasn't helped the rally, however. Brazil, the largest growing region, tends to increase its sales when the real is weak against the dollar so that producers there can recoup more reais for their dollar-denominated goods.

The International Coffee Organization said Thursday that growing speculation over the size of the 2017-18 crop is adding to price moves, as the arabica crop will be going into an off year in its biennial cycle, lowering supplies at a time when robusta crops have been hurt by drought and leaving less coffee to substitute into those blends.

In other markets, raw sugar for March dropped 2.1% to end at 21.65 cents a pound, cocoa for March was down 0.4% to close at $2,441 a ton, frozen concentrated orange juice was up 0.4% to settle at $2.1715 a pound and December cotton rose 1.3% to end at 69.20 cents a pound.

Write to Julie Wernau at julie.wernau@wsj.com

(END) Dow Jones Newswires

November 10, 2016 17:59 ET (22:59 GMT)

Copyright (c) 2016 Dow Jones & Company, Inc.