From 24/7 Wall St. · Ryne Mauck · · 1m
UnitedHealth's Price Swing in DIA
UnitedHealth's stock dropped 51.32% then rose 40.64% as DIA's weighting rule tracked its price swings.
In brief
UnitedHealth's stock dropped 51.32% then rose 40.64% as DIA's weighting rule tracked its price swings. UnitedHealth's share price decline and recovery directly affected DIA's holdings due to price-weighted index rules. Originally reported by 24/7 Wall St..
UnitedHealth's Price Swing
UnitedHealth's stock dropped 51.32% from $596.08 to $290.17 by May 30, 2025, then rose 40.64% to $408.08 by October 15, 2026.
DIA's Weighting Rule
DIA uses price-weighted index rules where higher-priced stocks have larger shares of the fund.
UnitedHealth's DIA Position
UnitedHealth held 4.55% of DIA as of October 14, 2026, making it the fund's fifth-largest holding.
Price Weighting Effect
Price weighting cuts exposure to falling stocks and adds exposure to rising stocks, cushioning declines but hurting rebounds.
DIA's Expense Ratio
DIA charges a 0.16% expense ratio, or $16 per $10,000 invested, compared to 0.03% for S&P 500 funds.
Why Price Weighting Matters
Price weighting follows share price alone, not company size or quality, meaning DIA's holdings shift with market movements.
The headline
UnitedHealth's share price decline and recovery directly affected DIA's holdings due to price-weighted index rules.
