Gold Investors See Challenges Ahead After Glittery 2020

After soaring earlier in the year, gold prices have retreated from a record of $2,069.50 an ounce reached in August, dragged down by signs of improvement in the global economy. Investors tend to buy the metal when nervous about holding riskier assets such as stocks or corporate bonds.

That leaves some investors expecting more moderate gains in 2021 as the economic outlook improves. From Nov. 6 to Dec. 18, investors pulled more than $10 billion from gold-backed exchange-traded funds, according to data from the World Gold Council, a notable reversal from the record inflows earlier in the year.

Much will depend on the strength of the U.S. recovery. A resurgence in the coronavirus pandemic and a runoff election in Georgia next month to determine control of the Senate could prompt market volatility in early 2021, traders say, providing support for gold prices.

But many investors anticipate a strong recovery in 2021. The rollout of coronavirus vaccines is expected to accelerate hiring and gross-domestic-product growth starting in the second quarter, according to economists surveyed by The Wall Street Journal.

Crucial to investors’ gold outlook: the direction of what are known as real yields, or the returns on bonds when adjusting for inflation. With the real yield on the benchmark 10-year Treasury note sitting around minus 1%, the cost of holding gold—which pays no yield—instead of government bonds is relatively low, said

James O’Rourke,

economist at Capital Economics. He expects real yields to fall further and gold prices to finish 2021 at $1,900 an ounce.

“Real yields aren’t always the driver of the gold price, but with such low interest rates and higher inflation expectations, they are the primary driver,” he said.

A strong recovery, meanwhile, could spur a climb in real yields and hurt the value of gold. Significant moves in real U.S. Treasury yields have been paired with inverse moves in gold prices since the 2008 financial crisis, according to data from

JPMorgan Chase

& Co., which found for every 0.25-percentagepoint increase in real 10-year Treasury yields, gold has moved $80 an ounce in the opposite direction.

After recommending clients buy gold for 2½ years until this past July,

Natasha Kaneva,

head of commodities research at JPMorgan, now expects real yields to climb and gold prices to fall to $1,650 an ounce by the end of 2021.

“If real yields are going up, why would you be buying gold?” she said.

Still some expect a weakening dollar to limit gold declines. Many Wall Street forecasters predict that increased government spending and a shift toward riskier assets will drag on the U.S. currency, which touched multiyear lows in 2020. Since gold is bought and sold with dollars, a weaker dollar makes gold cheaper for foreign investors.

The WSJ Dollar Index, which measures the dollar against 16 foreign currencies, lost more than 5% during 2020, its biggest yearly decline since 2017.

Silver prices also notched a record year. Most-actively traded silver futures contracts finished Thursday’s session at $26.412. That marks a 47% gain for the year—silver’s best performance since 2010.

Because silver is used to make products as diverse as electronics and solar panels, some analysts said demand might remain elevated even as the global economy recovers.

“The story with silver is largely quite similar to gold. What differs is that a recovery in industrial demand will help push the price of silver up a little bit more relative to gold next year,” Mr. O’Rourke said.

Write to Sebastian Pellejero at sebastian.pellejero@wsj.com