ZSL provides -2x the daily performance of silver, as measured by the price of COMEX silver futures contracts.
PRECIOUS METALS | Spot Silver Rises 1.00% to $58.21 an Ounce
Gold & Silver Dip Buyers Step In! Silver Eyes $59, Gold Targets $4,100 | Metals Minute Phil Streible
Silver (XAGUSD) Is up 2.58% on Jul 21: What Changed in Supply and Demand?
COMEX Gold Futures Fall 2%, Silver Drops 3.99%
Comex Silver Settles 3.70% Lower at $57.798 — Data Talk
Comex gold settles 2.42% lower at $4046.60