How much ad spend went thru the trade desk in 2025, not ttd’s revenue

The deep research logic is organized as follows: 

Okay, let's tackle this question: "How much ad spend went through The Trade Desk in 2025, not TTD’s revenue." The user is asking specifically about the ad spend processed through TTD's platform, not their own revenue. 

First, I need to check the references provided. Looking through the references, I see several mentions of TTD's revenue, but not directly about the total ad spend processed. For example, reference 1 mentions 19% revenue growth, but that's their own revenue, not the ad spend they facilitated. Reference 3 also talks about revenue but not the ad spend figures. 

There's a query in reference 9 and 13 that asks about ad spend processed through the platform, but the results show stock data, not the actual ad spend numbers. Similarly, reference 17 is a query about advertising spend statistics excluding revenue, but it returns zero results. So, the data isn't directly available in the provided references.

The user is asking for the total ad spend processed, which would be the volume of ads bought through TTD's platform. Since the references don't provide this specific figure, I can't give an exact number. However, I can explain the context and why this data isn't available. 

I should also consider the user's profile. They're interested in the NASDAQ Composite Index and use technical analysis, so they might be looking for market-wide data. But since the question is about TTD specifically, I need to focus on that. 

In the answer, I'll state that the exact figure isn't provided in the references. Then, I'll explain the difference between revenue and ad spend processed, and mention that TTD's revenue is a portion of the total ad spend (like a service fee). I'll also note that the user might need to look for more