5 sectors are rotating · 6 stable
Five of the eleven S&P 500 sectors are rotating this scan. Health Care and Financials are turning positive — Health Care produced the largest swing at 6.17pp of relative strength (from lagging SPY by 4.1pp last year to leading by 2.1pp today), and Financials the second-largest at 4.97pp. Technology and Materials are turning negative, though the tech rotation is really an internal split: XLK/VGT/IYW still show net positive 10-day money flow while SOXX (-$3.8B) and SMH (-$3.3B) bleed hard, so this is capital moving out of AI-capex semis rather than out of tech broadly. Utilities crossed into leadership by a slim 2.56pp, the smallest of the flips. The single most surprising rotation is Health Care: it was the deepest laggard a year ago and is now a clear leader, with biotech (XBI +19.8% for the month, +$2.9B of net inflow) driving the move. XLF absorbed the largest net dollar inflow of any ETF in the scan at +$7.6B — an unusually decisive institutional signature — while GDX led the outflow tape at -$1.9B as the dollar-strength trade weighed on precious-metals miners. Six sectors remain stable: Energy and Real Estate continue to lag structurally; Industrials and Communication Services show only minor drift; Staples and Consumer Discretionary stay defensively out of favor.
Health Care
XLVA year ago Health Care lagged SPY by 4.1pp; today it leads by 2.1pp — a 6.16pp swing, the largest of any sector in this scan. Biotech is doing the heavy lifting: XBI +19.8% for the month against SPY +2.3%, and the two biotech ETFs alone captured $3.6B of net 10-day inflow. Three drivers stack: rate-cut expectations rebuilding into the July FOMC compress the discount rate on long-duration cash flows; large-cap pharma facing the mid-decade patent cliff is finally deploying balance-sheet cash into M&A (a two-year deal drought is breaking); and the 2025 pricing-legislation overhang has quietly cleared without the tail scenarios traders had discounted. Positioning was net-underweight coming in, which amplifies the mark-to-market move.