olumns), much used in portfolio optimization. The output is a list where each element is a different target variable (prices, returns, volumes).</p></li>
<li><p>Parallel computing with package <code>furrr</code> is available, speeding up the data importation process.</p></li>
</ul>
</div>
<div class="section level2">
<h2 id="warnings">Warnings<a class="anchor" aria-label="anchor" href="#warnings"></a>
</h2>
<ul>
<li>Yahoo finance data is far from perfect or reliable, specially for individual stocks. In my e