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(AAPL) shares has drawn investor attention to exchange-traded funds carrying the highest concentration of Apple exposure.
Funds with the largest Apple weighting track the stock's price moves with little offset from other holdings, making the selloff a direct test of single-name concentration risk.
Concentration and price sensitivity An ETF's sensitivity to any individual stock scales with that stock's weight in the portfolio.
The higher Apple's allocation within a given fund, the more closely its net asset value follows AAPL's daily price action.
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