BUZZ — Treasury bond ETFs hit multi — year lows as bond yields surge
* Shares of exchange-traded funds tracking US Treasuries slip premarket, as long-dated bond yields hit multi-year highs * US Treasury yields, which move inversely to prices, fall with months-long selloff in global bond markets gathering pace * The iShares 20+ Year Treasury Bond ETF falls 0.6% to $80, set to extend decl