Dear Sir/Madam,

I'm currently busy with my master dissertation on the performance of academic spin-offs. I have currently 179 companies in my dataset and I want to measure performance via ROE. However, 33 companies have negative equity which makes it impossible to calculate ROE. Just excluding them out of my dataset seems as a major mistake since those 33 companies aren't performing well. How should I solve this? Should I manually set the ROE of those 33 companies to a huge negative value (f.e. -200%) or how should I cope with this issue?

Thanks in advance!

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