length of all of the DataFrames to ensure</span>
<span class="sd">    that they are all between the same dates.</span>

<span class="sd">    :param universe_dict:           The dictionary of time series</span>
<span class="sd">    :type  universe_dict:           dict</span>

<span class="sd">    :return:                        the dictionary of truncated time series</span>
<span class="sd">    :rtype:                         dict</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="n">star