UNH soars, AMAT slips and these group of ETFs see diverging impacts

Shares of UnitedHealth (NYSE:UNH) and Applied Materials (NASDAQ:AMAT) are two stocks trending on Friday in different directions for different reasons, driving a distinct wave of activity across the exchange traded funds where they hold heavy weightings—lifting some portfolios while dragging others lower.

UnitedHealth

UnitedHealth (NYSE:UNH) jumped up over 12% after Warren Buffett’s Berkshire Hathaway (BRK.A)(BRK.B) revealed it had taken a new stake in the health insurer during the second quarter of 2025.

Currently UNH is held by a total of 375 different exchange traded funds, but listed below are the 5 with the highest portfolio allocations:

No. 1: iShares U.S. Healthcare Providers ETF (NYSEARCA:IHF), 21.34% allocation.

No. 2: T. Rowe Price Health Care ETF (NASDAQ:TMED), 6.41% allocation.

No. 3: Harbor Health Care ETF (NYSEARCA:MEDI), 6.24% allocation.

No. 4: Opal Dividend Income ETF (NYSEARCA:DIVZ), 5.26% allocation.

No. 5: Vanguard Health Care ETF (NYSEARCA:VHT), 5.02% allocation.

Applied Materials

Applied Materials (NASDAQ:AMAT) dropped more than 13% after it issued soft fiscal Q4 2025 guidance, projecting a 4.9% drop in revenue and a 9% decline in adjusted EPS year-over-year, which has prompted multiple analyst downgrades.

Applied Materials on the other hand is held across 408 exchange traded funds, with the 5 largest portfolio allocations highlighted below:

No. 1:First Trust Nasdaq Semiconductor ETF (NASDAQ:FTXL), 7.73% allocation.

No. 2: Pacer BlueStar Engineering the Future ETF (NASDAQ:BULD), 5.93% allocation.

No. 3: Davis Select U.S. Equity ETF (BATS:DUSA), 5.44% allocation.

No. 4: Invesco Semiconductors ETF (NYSEARCA:PSI), 4.90% allocation.

No. 5: ProShares Nanotechnology ETF (NYSEARCA:TINY), 4.68% allocation.