Calculate Average Price of Market Order in a thin order book:

External question — Personal Finance Stack Exchange Author: EllipticalInitial Original post: https://money.stackexchange.com/questions/150199 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Take the following UST/USDC order book: Suppose I were to place a market order to buy $10,000 USDC worth of UST. How would I calculate the average price the order would be filled at? Would this math calculate it correctly? Where Avg Price = sumproduct( (2), (3) ) / Total Or would it all be filled at 1.0003? I'm pretty sure it would be the former but I guess I'm not sure since the order book displays the current price as 1.0003. Would my market order get broken into the four orders I have in the second picture and fill each one individually or is it done some other way?

External answer — Personal Finance Stack Exchange Author: Bob Baerker Original post: https://money.stackexchange.com/a/150200 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. You have some small rounding errors and one bad typo: 25,481.719 time 1.0013 isn't equal to 7,046 It's 7,034.1653 Other than that, yes, the average price would be 1.00120 .