Peter Borish

Biography

Peter Borish occupies a peculiar place in this archive: he is the collaborator behind the most famous call in macro history, and he is also the one central figure in the Paul Tudor Jones story whom the archive's primary sources never quote — neither in his own voice nor in PTJ's words about him. That gap is stated here at the outset rather than papered over. What follows is assembled from the data layer of this knowledge base and from the well-established public record, and it confines itself to facts that are not in serious dispute. Where the corpus runs out, the text says so.

The undisputed core of the biography is the Tudor years. Borish joined Tudor Investment Corporation in its first years, in the mid-1980s, as Jones's first research partner — the young firm's director of research and chief strategist, and the quantitative half of a two-man research effort. Tudor at the time was a small macro shop a few years removed from its 1980 founding, run by a trader whose formation had been in the cotton pits of New Orleans and New York under Eli Tullis. Jones brought price action, tape reading, and a trader's instinct for asymmetric risk; Borish brought the systematic, historical-comparison cast of mind. The partnership's product was the historical overlay this archive calls the analog model: the disciplined practice of superimposing the present market on a past one and trading the rhyme.

Their culminating study compared the equity market of the mid-1980s with the market of the late 1920s, and it occupied the desk for roughly a year before October 1987. When the break came, Tudor was positioned for it — the episode that made Jones's public reputation and that was captured, in real time, by the documentary film Trader (1987), in which Borish appears as the research partner at the center of the 1929 comparison work. Standard accounts of the call record the Tudor Futures Fund returning roughly 125 percent in 1987, the figure that turned a private research exercise into the profession's founding legend of crash anticipation.

The crash's most consequential sequel also bears Borish's name on the founding documents. In 1988, the year after the break, Jones and his friends — Borish among the co-founders — established the Robin Hood Foundation, the vehicle that would become the proving ground of venture philanthropy: hedge fund money, metrics, and accountability applied to New York poverty. The same research partnership that had read the 1929 rhyme thus stands at the origin of both halves of the Tudor legacy, the trading method and the giving institution.

Borish's later career moved him from Tudor's discretionary macro shop toward fully systematic trading. After leaving Tudor in the mid-1990s, he founded Computer Trading Corporation, a quantitative managed-futures firm, and went on to become a founding figure of the managed-futures research world — the industry that institutionalized, at scale, the proposition that historical price behavior can be modeled and traded systematically. In the long arc of the industry, his trajectory reads as the analog model industrialized: the chart overlay of 1986–87 generalized into an entire category of quantitative investment management.

A word on what this biography cannot do. The corpus assembled for this knowledge base — eighteen primary sources spanning the Market Wizards interview, the withdrawn documentary's secondary record, commencement addresses, TED, CNBC appearances, investor letters, and the long 2026 Invest Like the Best conversation — contains no passage in which Borish speaks, and none in which PTJ speaks about him. The biographical record of the man himself, in his own words, lives outside this archive. This page therefore declines to give him any. No quotation below is attributed to Borish, and none of PTJ's words are stretched into a portrait of him; the passages quoted are PTJ describing the joint work, with the speaker named each time.

Key Stories / Interactions with PTJ

The defining story is the year of the 1929 study. Through 1986 and into 1987, Jones and Borish worked the comparison between the roaring bull market in front of them and the one that had ended fifty-eight years earlier — chart against chart, rally against rally, break against break. The method's premise is that crowd psychology is stable across generations, so price patterns recur in tradable detail; the partnership's contribution was to make that premise operational, a research discipline with a desk attached. Decades later, PTJ still described the intensity of that study in the first person, and in doing so gave the archive its closest window into what the collaboration produced:

"I thought for sure I'd been looking at the parallels in 1929 for a year. All of a sudden it happens. I think oh my god this is a perfect replay, a perfect analog."

— Paul Tudor Jones, Invest Like the Best, 2026 (machine transcript; PTJ speaking about the analog-model study, not about Borish)

The second panel is the trigger. The model did not merely say that the market resembled 1929; it said when. The Friday before Black Monday was a record-volume down day, and the desk recognized the signature because the analog had already shown it to them:

"When we came in on Monday, October 19, we knew that the market was going to crash that day. As the previous Friday was a record volume day on the downside. The same thing happened in 1929, two days before the crash."

— Paul Tudor Jones, Market Wizards interview with Jack Schwager (1987), as widely circulated

The third panel is the film. Trader followed the Tudor team through 1987 and preserved the analog-model work — and Borish's role in it — on camera; it aired on public television in November 1987, weeks after the crash, and Jones then had it withdrawn from circulation, turning it into the profession's most famous lost artifact. This archive's source entry for the film collects press reporting about its status and PTJ's later retellings of the events it captured; the film itself remains withdrawn, and no transcript of it is collected here. Borish's visible presence in the documentary is nonetheless the reason his name is inseparable from the 1987 story in every standard account of it.

The fourth story is what the crash money built. Convinced by the same analog that a depression was coming — "maybe the worst macro call of my life," as PTJ later conceded — Jones concluded that if the 1930s were about to repeat, he and his friends had to act. He has dated the founding precisely:

"Robin Hood happened the day after the crash [...] I called up my friends and we began it."

— Paul Tudor Jones, Invest Like the Best, 2026 (machine transcript)

Borish was among the friends who answered that call and signed on as a co-founder of the Robin Hood Foundation in 1988. The depression never came — the analog's final act failed, a fact PTJ recounts against himself — but the institution outlived the forecast, and the research partnership of 1986–87 is the common ancestor of both the Tudor legend and the foundation.

Impact on PTJ's Philosophy

Borish's impact on the philosophy documented in this knowledge base is concentrated in a single concept, but that concept is load-bearing. The analog model is PTJ's historical method — the conviction that markets rhyme in tradable detail and that the past, studied rigorously enough, issues actionable warnings about the present. It is the method that produced 1987, and PTJ was still applying it nearly four decades later, measuring equity market capitalization against GDP across every bubble peak of the past century — 65 percent in 1929, 85 to 90 percent in 1987, 170 percent in 2000, 252 percent at the time of the 2026 interview — in exactly the spirit of the comparison he and Borish built. The collaboration ended decades ago; the habit of mind it installed did not.

The partnership also fixed the division of labor that Tudor's research culture would keep: the discretionary trader's read of price and tape, checked and extended by systematic historical work. PTJ's method is often misdescribed as pure intuition; the Borish years are the standing evidence that it was, from early on, a marriage of instinct and model. And the crash call sits inside the larger architecture of the philosophy as its founding proof of defense first: the point of seeing the break coming was not the glory of the prediction but the preservation and multiplication of capital through the worst single day in market history.

The honest boundary of this section is the same as the biography's. Everything asserted here about impact rests on the joint work itself and on PTJ's lifelong practice of the method; the corpus offers no passage in which PTJ assesses Borish's contribution in words of his own, and this page will not invent one. What the archive can verify is the shadow the collaboration cast forward — a method still in use, a film still hoarded, and a foundation still running.

Referenced In

Borish's data-layer entry is registered against two sources: Trader (1987), the withdrawn documentary in which he appears as the research partner at the center of the 1929 overlay, and Invest Like the Best (2026), where PTJ recounts the year of 1929 parallels, the perfect replay, and the founding of Robin Hood the day after the crash. The Market Wizards (1987) interview preserves the desk's October 19 recognition scene — the record-volume Friday against its 1929 counterpart — that the analog model made legible. His conceptual footprint in this knowledge base is the analog model itself, with defense first as the doctrine the 1987 call proved and venture philanthropy as the program his co-founding of Robin Hood set in motion. Key relationships: Paul Tudor Jones, the collaborator; Eli Tullis, the apprenticeship that preceded the partnership; Stanley Druckenmiller, the peer generation of macro that the Tudor example helped define. See the full sources archive.