TLT (iShares 20+ Year Treasury Bond ETF) Risk-Off Indicator: When investors are skittish, they often flock to the safety of long-term U.S. Treasury bonds, pushing the price of TLT up. A rising TLT often signals decreasing risk appetite. HYG (iShares iBoxx $ High Yield Corporate Bond ETF) Risk-On Indicator: High-yield bonds are riskier assets. When HYG is up, it...