No. Your real estate agent has a duty to you and cannot trade against your interests. A prop trading firm (or &quot;3rd party firm&quot;) has no such duty, and thus can&#x27;t &quot;front-run&quot; you.<p>If <i>your own</i> real estate agent bought a bunch of houses to resell them to you at a profit, they would be front running you. If <i>another</i> real estate firm noticed that you seemed intent on buying 5 houses and bought a bunch of them to resell to you, that would not be front-running; in fact, that would basically be a description of how the real estate market works.