ETFs in Focus as Turkey Crisis Worsens: iShares 20+ Year Treasury Bond ETF (TLT) The U.S. government bonds tracking the long end of the yield curve often carry a safe haven status. As such, the ultra-popular long-term Treasury ETF - iShares 20+ Year Treasury Bond ETF (NASDAQ: TLT ) - was up 0.7% in the last session. Turkish economy is suffering a myriad woes, including double-digit inflation, inadequate currency reserves and one of the largest current-account deficits in emerging markets.