According to IHS Markit Ltd data, short interest in the iShares 20+ Year Treasury Bond ETF (NasdaqGS: TLT) has increased to 25% of shares outstanding, the highest level of short interest since early 2017, Bloomberg reports. The Vanguard Short-Term Government Bond ETF (NASDAQ: VGSH) saw $1.5 billion in net inflows over the past week, according to ETFdb data. Further adding to the inflation outlook, the Federal Reserve Chairman Jerome Powell noted that the central bank views any jump in price pressures as short-term and will not be cutting back on its crisis-level monetary support any time soon.