iShares Preferred and Income Securities ETF offers diversified exposure to preferreds, with $13.7B AUM and a 5.6% TTM yield. PFF's portfolio is 62% financial institutions, 24% industrials, and spans 456 holdings across baby bonds, convertibles, and fixed/floating preferreds. PFF's largest allocation is 42% fixed-rate preferreds, with key sub-segments yielding and varying call/maturity profiles.