The phrase "including X, Y, Z" is an added thought (a parenthetical expression), so it should be set off with a pair of commas (or dashes or parentheses). So: My model organized information, including X, Y, Z, in order to review the investment. To avoid confusion, since you are already using a string of commas, I would use dashes: My model organized information- including X, Y, Z -in order to review the investment.
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