Showing how the calculations are done.

Source: https://imgur.com/a/XnJV8dw
So I'm going to try and summarize this as best as i can.
6 clearing firms Issued ECP charges the morning of January 28, 2021.
6 clearing firms were Defaulting from these ECP charges.
We also know the total amount waived was 9.7 billion.
We know all of these ECP charges were waived.
We know approximately from documents that Robinhood defaulted a total amount of 2.3 billion.
Virtu is ranked 5th place for 2 years prior to, including January 28th. 1.06 billion
Therefore Vision, Wedbush and LEK ECP charges must be equal to or less than 1.06 billion
Axos is ranked 4th place in the 2 years prior, applying the % to the ECP we get 0.92 billion
Thus once we plug these numbers in we can assume Instinet ECP Waivers were AT LEAST 3.3 billion. MORE THAN ROBINHOOD.
This deserves a second congressional hearing to get some answers.