The Invesco Senior Loan ETF (NYSEArca: BKLN) is higher by nearly 2% year-to-date, and income investors are flocking to the original leveraged loan exchange traded fund — signs that the search for income and yield is taking market participants beyond basic bond assets. BKLN, which follows the S&P/LSTA U.S. Due to the fixed rate component found with BKLN's components, the ETF can potentially be a better inflation fighter than a traditional high-yield corporate bond fund.