</span>
        <span class="c1"># Filters the DataFrames between these dates</span>
        <span class="n">universe_dict</span><span class="p">[</span><span class="n">df_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">df</span><span class="o">.</span><span class="n">loc</span><span class="p">[((</span><span class="n">df</span><span class="o">.</span><span class="n">index</span> <span class="o">&lt;=</span> <span class="nb">min</span><span class="p">(</span><span class="n">end_