On Monday, the iShares 7-10 Year Treasury Bond ETF (IEF) fell 1.2% and the iShares 20+ Year Treasury Bond ETF (NasdaqGS: TLT) declined 2.2%. For instance, TLT has attracted over $1.6 billion in net inflows on Friday alone, marking the biggest one-day inflow since its 2002 launch. The Fed is looking at a tighter monetary policy outlook with multiple interest rate hikes ahead as the central bank tries to clamp down on surging inflationary pressures.