Once a year the managers of the Hennessy Cornerstone Mid Cap 30 Fund rebalance their portfolio. They use a formula to select 30 stocks, equal-weighting each at 3.3 per cent of the fund. Then they let ...

Physicists have found a simple and effective way to skip over an energy level in a three-state system, potentially leading to ...

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Atomic nuclei exhibit multiple energy scales simultaneously—ranging from hundreds down to fractions of a megaelectronvolt. A new study demonstrates that these drastically different scales can be ...