HF from LO

Has anyone here made the move from LO to HF (either SM or MM)?

Curious to hear how big of an adjustment it was, particularly in terms of adapting to a different investment style. Was the shift in time horizon difficult? Did you find there was a steep learning curve?

Also, I’d love to understand how the rigor of the diligence process compares between a hedge fund and a long-only shop. Specifically, how did things like modeling, KPI tracking, management/industry outreach, and sell-side usage evolve for you?

For example:

Did the frequency or cadence of touchpoints (with companies or experts) change?

Did your modeling skillset or ability to dig into cost structures and drivers noticeably improve?

Any insight on how your day-to-day changed or stayed the same would be really helpful.

Thanks in advance!