(Bloomberg) -- Silver ain’t for the faint of heart.

The metal’s price swings have rattled investors so much that even a 10% rally last month wasn’t enough to boost purchases of exchange-traded funds backed by silver.

While the appeal of precious metals got a boost from stimulus measures in Europe and Asia aimed at bolstering stagnant economies, the rise in value also brought a surge in volatility. A week after nearing a bull market, prices on Jan. 29 fell the most since 2013, wiping $645 million in one day from the value of global funds linked to silver.

“We don’t ever invest in silver since it’s just so volatile,” said James Shelton, who helps oversee $2.2 billion as chief investment officer of Kanaly Trust in Houston. “If we feel we need to invest in precious metals, it will probably be gold.”

The volatility in silver over the past five years has been about double that of gold, data compiled by Bloomberg show. Bigger price swings increase the chances of bigger losses compared with more stable assets.

Silver futures on the Comex in New York reached a four- month high of $18.505 an ounce on Jan. 21, and were up as much as 19% from a four-year closing low in November. While prices tumbled 19% in 2014 and 36% a year earlier, gold futures were little changed last year after dropping 28% in 2013.

ETP HOLDINGS

Holdings in ETPs backed by silver fell 0.3% last month, after declining 3% in December, while gold holdings jumped 4.1% in January, data compiled by Bloomberg show. Retail investors account for 80% of U.S. purchases, ETF Securities estimates.

About half of silver’s use is as an investment or in jewelry, compared with 90% for gold, while the other half is for industrial products, from electronics to photographic film, industry data show.

Silver’s 30-week correlation coefficient to gold is at 0.83. A reading of 1 signals prices moving in lockstep. By comparison, silver’s correlation with an index of industrial metals is near zero.

“Silver’s dual role adds to its volatility as it reacts to both the markets,” said Bart Melek, the head of commodity strategy at TD Securities in Toronto. “Silver is riskier than most metals. There is a nickname for silver: The devil’s metal. And that’s probably not an accident.”

MINING COMPANIES

Most mining companies that sometimes lock in favorable prices for their production through hedging contracts refrained from doing so during the swing in silver. At the end of 2014, the amount of metal committed to hedging contracts was the smallest in a decade, according to CPM Group, a New York- based commodities research and consulting company.

The volatility in silver hasn’t deterred hedge funds. Money managers and other speculators on Jan. 27 were the most bullish since July, the most recent government data show. Bets on higher prices more than doubled from the end of December to 40,164 futures and options contracts.

With increased demand for a hedge against a global slowdown, some investors are buying silver because its 47 % drop over the last two years made it a cheaper alternative. An ounce of gold fetched $1,262.10 last week, enough to buy about 74 ounces of silver at $17.10. In the past decade, the average ratio was 58 ounces.

AMPLE SUPPLIES 

“The volatility in silver does not really impact because investing in silver is a strategic decision as opposed to a tactical one,” said Peter Sorrentino, a Cincinnati-based fund manager at Huntington Asset Advisors., which oversees $900 million.

While the appeal of silver as a haven has given a boost to prices, supplies are ample, according to Suki Cooper, an analyst in New York at Barclays. Demand will continue to trail supplies for 10 straight years, CPM Group said.

“Since much of it is produced as a byproduct, there is very little production discipline, and hence it's very difficult to forecast strong prices,” John Stephenson, chief executive officer of Stephenson & Co. Capital Management in Toronto, said in a telephone interview on Jan. 30. The company manages about $40 million. “If you are looking for a quick trade, silver could be a smart way, but if you are looking for buy and hold, and looking to invest your retirement money, stay away.”

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