ISHARES CORE S&P 500 ETF

The iShares Core S&P 500 ETF ended Q1 2026 with 3,861 holders and over $505B in reported institutional value — the largest single security in the dataset by reported count — but the flow picture this quarter is more nuanced than a simple inflows story. JPMorgan Chase delivered the most striking single move, adding $7.4B to reach a $15B position, while Envestnet Asset Management and Capula Management both roughly doubled their stakes. Those gains sit alongside meaningful reductions: Bank of America cut $1.7B, Royal Bank of Canada shed $7.5B, and Millennium Management exited $1.4B worth. The divergence suggests active managers are repositioning around the U.S. large-cap core at different points on the duration/mandate spectrum — RIAs and sovereign allocators added, while some bank trading desks and hedge funds trimmed. As a passive vehicle, IVV doesn't signal a view; the activity around it is the story — and that story is "differing beliefs about U.S. equity duration, not direction."