Hard to believe this sometimes.

Hard to believe this sometimes.
Jim Simons built the most successful hedge fund in history…
starting at 40.
No Google.
No cloud.
No AI copilots.
No “startup ecosystem”.
Just:
– no VC money
– no hype
– no launch strategy
– no fancy office (literally a strip mall)
And a small group of mathematicians.
In 1978, he left academia with a strange idea:
Markets aren’t random.
They’re patterns.
Most people ignored it.
He didn’t.
Nearly 50 years later, Renaissance Technologies’ Medallion Fund has delivered ~66% annual returns (gross) for decades.
~39% net.
That’s not “good performance”.
That’s… something else entirely.
Over $100B in profit.
Closed to outside investors since 1993.
And it quietly became the foundation of modern quantitative trading.
What started as a mathematician’s experiment
turned into the most efficient money-making machine we’ve seen.
No hype cycle.
No viral growth.
Just deep conviction.
And years of compounding.
Funny thing is:
Today, everyone has better tools.
But very few have that level of focus.
Maybe the real edge was never infrastructure.
It was patience.
And the willingness to work on something that looked unreasonable for a very long time.
Legend.
Curious — what would Simons build if he started today?