It's fair to say that proclamations of fire and brimstone for markets that are sensitive to interest rate changes were premature.
U.S. Treasury ETFs with maturities of 20 years or longer like the iShares 20+ Yr. Treasury Bond ETF (TLT) have jumped 9.31% and have easily outperformed the broader U.S. stock market. Interest rates have stayed contained, thereby lifting bond prices.
Leveraged Treasury ETFs like the Direxion Daily 20+ Yr. Treasury Bull 3x ETF (TMF) have soared over 25% year-to-date (YTD). TMF aims for triple or 300% daily leverage to long-term U.S. Treasuries.
Although long-term Treasuries have more duration risk versus shorter-term bonds, it has yet to hurt performance. Nevertheless, it's a lingering risk.