Investors can't seem to get enough of gold this year.
As gold has seen its best start to the year since 1974, exchange-traded funds that track the metal have surged in popularity. According to Stacey Gilbert of Susquehanna, long unlevered gold ETFs have already seen $7.3 billion in inflows this year.
"It is definitely a fan favorite this year," Gilbert said Thursday on CNBC's "Power Lunch." "Just to put in perspective of when we've seen those flows in the past — two months into the year — it was 2009."
The most popular gold ETF, GLD, has grown by $5.5 billion this year, according to ETF.com data. That's more than twice the net inflows seen by the second-most popular ETF, iShares MSCI USA Minimum Volatility (USMV).
"It's the gorilla right now," commented Christian Magoon, CEO of ETF-launching company Amplify Investments.