Defensive ETFs Gain Traction Amid Market Volatility Amid rising fears of market instability, defensive ETFs like the Invesco S&P 500 Low Volatility ETF are gaining attention. With the VIX surging and the Buffett Indicator at 211%, investors appear to be seeking safer options. Notably, Warren Buffett's Berkshire Hathaway is sitting on a record cash reserve, signaling caution in the market.1