Text Editor Stripping Content?

Hey there. We have tag pages that present stock quotes to readers. Under the tag description on our old site, this is what we have for example:

<div class="qtool" data-qmod-tool="detailedquotetabchartnews" data-qmod-params="{&quot;symbol&quot;:&quot;ABT:CA&quot;}"></div>
<h2 style="text-align: center;">Articles including TSX:ABT</h2>

This will display a quote area with pricing info on the "symbol" I input, as well as display a heading and then the related posts. However, whenever I update the page, it's stripping it out so it looks like this:

<div class="qtool" data-qmod-tool="detailedquotetabchartnews"></div>
<h2 style="text-align: center">Articles including TSX:ABT</h2>

Is there any reason why it is stripping this out, and how can I go about fixing it? This is new to me, as my old Studiopress theme lets me input it as I like.