ETFs w/ most active options trading:

$SPDR S&P 500 ETF(SPY.US)$ - 8.307M
$Invesco QQQ Trust(QQQ.US)$ - 3.346M
$iShares Russell 2000 ETF(IWM.US)$ - 845k
$iShares MSCI Emerging Markets ETF(EEM.US)$ - 513k
$iShares Silver Trust(SLV.US)$ - 351k
$iShares 20+ Year Treasury Bond ETF(TLT.US)$ - 316k
$iShares China Large-Cap ETF(FXI.US)$ - 289k
$Ishares Iboxx $ High Yield Corporate Bond Etf(HYG.US)$ - 255k
$ProShares UltraPro QQQ ETF(TQQQ.US)$ - 241k
$ProShares UltraPro Short QQQ ETF(SQQQ.US)$ - 236k
$SPDR Gold ETF(GLD.US)$ - 191k
$Financial Select Sector SPDR Fund(XLF.US)$ - 175k
$Advisorshares Trust Pure Us Cannabis Etf(MSOS.US)$ - 111k
$Direxion Daily Semiconductor Bull 3x Shares ETF(SOXL.US)$ - 109k
$Spdr Series Trust S&P Regional Bkg Etf(KRE.US)$ $Ishares Iboxx $ Investment Grade Corporate Bond Etf(LQD.US)$ - 106k
$iShares MSCI Brazil ETF(EWZ.US)$ - 98k
$ProShares Ultra VIX Short-Term Futures ETF(UVXY.US)$ - 96k
$iShares MSCI EAFE ETF(EFA.US)$ - 95k
$VanEck Gold Miners Equity ETF(GDX.US)$ - 93k
-89k