The mutual fund $x$ has value weights on four sectors and returns as given in the table below. The table also shows the weights and returns of the fund's benchmark portfolio.

$\backslash$table$[[,$Technology,Utility,Financial,Energy$],[$Fund X weight $(\%),32\mathrm{.}2,18\mathrm{.}0,21\mathrm{.}3,28\mathrm{.}5],[$Benchmark weight $(\%),20\mathrm{.}0,24\mathrm{.}5,16\mathrm{.}0,39\mathrm{.}5],[$Fund X return $(\%),-3\mathrm{.}4,4\mathrm{.}5,12\mathrm{.}8,3\mathrm{.}4],[$Benchmark return $(\%),0\mathrm{.}1,4\mathrm{.}7,10\mathrm{.}6,2\mathrm{.}7]]$

$($a$)$ How did the fund perform compared with the benchmark, overperformance or underperformance?

$($b$)$ Provide a performance attribution of mutual fund's return in terms of its broad asset class allocation and stock selection relative to the benchmark.