In brief
The episode argues that Renaissance Technologies' Medallion fund is proof the market can be beaten: 66% gross annual returns over three decades, with no losing year since 1990. Crucially, it was built by outsiders — codebreaker Jim Simons and PhD scientists with no investing background — who treated markets as a signal-processing problem, using hidden Markov models to trade on statistical patterns while ignoring fundamentals entirely.
The central arc is the 25-year gap between the idea and the machine: from the 1964 IDA paper through gut-driven currency trading, near-blowups, and spinouts, until clean data, one unified model, and leverage made it work. The tension is that the money machine only survives by staying small and secret — kicking out all outside investors, capping fund size against slippage, and engineering incentives so the world's smartest people never leave.
Facts
Stated by the speakers. Each quote matches the transcript, which shows what was said, not that it is true.
Jim Simons was fired from the Institute for Defense Analyses in 1967 after publicly opposing the Vietnam War.
“Jim gets fired in 1967. Even though he's a star codebreaker, he made supposedly huge contributions to the group, which are still classified.”
0:33:15 · · Simons firing · 1967
New York Governor Nelson Rockefeller launched a $100 million campaign to turn Stony Brook into a mathematical powerhouse, and Simons chaired its math department.
“Nelson Rockefeller, who was then the governor of New York, had launched a campaign, a hundred million dollar campaign to try and turn this Long Island campus of the State University of New York into a mathematical powerhouse”
0:34:32 · · Stony Brook · 1960s
Jim Simons left academia in 1978 to trade full time.
“And in 1978, he leaves to focus full time on trading, which is a huge shock to the academic community.”
0:37:50 · · Leaving academia · 1978
Simons' trading firm Monometrics started with a little less than $4 million in capital, partly from the sale of the Colombian flooring company.
“I think together with Jim, his partners, and whatever money Lenny put in, they had a little less than $4 million in this initial capital.”
0:39:46 · · Monometrics capital · 1978
Jim Simons wound down Monometrics in 1982 and co-founded Renaissance Technologies with Howard Morgan.
“in 1982, Jim actually winds down Monometrics and he and Howard co-found a new firm together.”
0:45:51 · · Renaissance founding · 1982
Lenny Baum's large bet on government bonds went wrong and the portfolio fell 40%, after which Baum left Renaissance.
“Lenny goes super long on government bonds and the market goes against him and the whole portfolio drops 40%, which is wild.”
0:47:37 · · Baum blowup · 1980s
James Ax and Sandor Strauss moved to California and started Axcom, which Renaissance hired to run its remaining quantitative trading.
“It's called Axcom, A-X-C-O-M. And we'll contract with Axcom to run what's left of the trading operations here for Rentech.”
0:50:17 · · Axcom · 1980s
Medallion's 5% management fee was set based on roughly $800,000 a year of infrastructure costs.
“Strauss' infrastructure costs were about $800,000 a year. So they just backed into the management fee based on like, hey, we need $800,000 a year to run the infrastructure.”
1:07:00 · · Management fee · 1990
Jim Simons closed Medallion to new investors at the end of 1993.
“At the end of 1993, Simons decides to close the fund and not allow new LPs in.”
1:13:17 · · Fund closure · 1993
Renaissance hired Peter Brown, Bob Mercer and David Magerman from IBM's speech-recognition group to build its equities model.
“They bring Peter and Bob and one of their programming colleagues, David Magerman, over from IBM into Rentech.”
1:22:25 · · IBM hires · 1990s
Medallion returned 128% gross and 98.5% net in 2000, the year the tech bubble burst.
“And then in the year 2000, they just totally blow the doors off. 128% gross returns. Net returns after fees of 98.5%.”
1:29:30 · · Medallion 2000 · 2000
Medallion raised its carried interest to 36% in 2001, and to 44% in 2002.
“the next year in 2001, they raise the carried interest on the fund to 36%, up from either 20% or 25%, whatever it was before.”
1:36:53 · · Carry increase · 2001
Starting in 2003, Renaissance removed outside investors from the Medallion fund, leaving employees and select alumni.
“starting in 2003, everybody who's an outside investor, who's not part of the Rentech family, you know, current employee or alumni of the firm, gets kicked out.”
1:39:40 · · Investor removal · 2003
Renaissance's institutional funds charged a 1% management fee and 10% performance fee, far below Medallion's.
“on the institutional fund, the fees are 1 in 10. You're only taking 1% annual fee and 10% of the performance.”
1:43:58 · · Institutional fees · 2000s
Jim Simons retired at the end of 2009, and Peter Brown and Bob Mercer became co-CEOs of Renaissance in 2010.
“Jim retires at the end of 2009, and Peter and Bob become co-CEOs, co-heads of the firm in 2010.”
1:50:02 · · CEO succession · 2010
Jim Simons asked Bob Mercer to step down as co-CEO of Renaissance in 2017, after controversy over Mercer's political activity.
“Ultimately, Jim asked Bob to step down as co-CEO in 2017, which he did.”
1:55:26 · · Mercer departure · 2017
The IRS ruled in 2021 that Renaissance's basket option trades were not separate from the firm and said $6.8 billion in taxes was owed.
“the IRS said, no, you made all those trades. That was not a completely separate entity. And so you guys owed $6.8 billion in taxes that you didn't pay.”
2:16:22 · · IRS basket options · 2021
Jim Simons personally paid $670 million in back taxes over Medallion's basket option strategy.
“he paid $670 million to the IRS in back taxes for this basket option strategy that turned out not to be a long-term capital gain.”
2:16:49 · · Simons tax bill · 2021
Knight Capital lost $460 million in a single day in 2012 because of a software deployment bug.
“there was a company called Knight Capital in 2012 that lost $460 million in a single day.”
2:45:05 · · Knight Capital · 2012
The hosts report Medallion's net annual return from 1988 to 2022 as 40%, about 68% before fees.
“during the entire lifetime so far of Medallion, from 1988 to 2022, that's 34 years, the total net annual return number is 40%.”
1:53:22 · · Medallion returns · 1988-2022
Renaissance Technologies has fewer than 400 employees, about half in research and engineering.
“There are less than 400 employees that work at Rentech, only half of which work in research and engineering.”
2:00:31 · · Headcount
Renaissance's website says it has 50,000 computer cores, 150 gigabits per second of connectivity and a database growing over 40 terabytes a day.
“they have 50,000 computer cores with 150 gigabits per second of global connectivity and a research database that grows by more than 40 terabytes a day.”
2:19:15 · · Computing infrastructure
The Sharpe ratio, named after economist William F. Sharpe and pioneered in 1966, measures a fund's return above the risk-free rate relative to its volatility.
“So it's named after the economist William F. Sharpe. It was pioneered in 1966. It is effectively the measure of a fund's performance relative to the risk-free rate.”
1:35:15 · · Sharpe ratio · 1966