UBS said that iShares Silver Trust, the world's largest silver ETF, is one of the main factors driving the growth in ETF trading volume. In the past four days, SLV trading volume reached a new high during the year, and the Chicago Mercantile Exchange's increase in margin has triggered excessive participation by retail investors in SLV. There was a large outflow of funds on Monday, and capital flows were balanced on Tuesday.

UBS said that iShares Silver Trust, the world's largest silver ETF, is one of the main factors driving the growth in ETF trading volume. In the past four days, SLV trading volume reached a new high during the year, and the Chicago Mercantile Exchange's increase in margin has triggered excessive participation by retail investors in SLV. There was a large outflow of funds on Monday, and capital flows were balanced on Tuesday.