Mathematician & hedge fund founder (Renaissance) · Born 1938-04-25 (public profile · birth time unknown)
A lamp afloat on a night sea — the Ding Hai (丁亥) day pillar of the mathematician who read signal out of noise. Jim Simons's birth chart pairs a rule-rewriting Hurting Officer structure with a Mercury that digs all the way to the bottom.
Supreme Ultimate Noble — a foremost benefactor drawn by the heavens — a way opens where things were blocked
Heavenly Noble — the foremost of the stars — help and a way appear at each crisis
Heaven Officer Noble — a benefactor of official fortune — a star that adds shine on the public stage
Travelling Horse — energy of movement and expansion that rarely stays put
Earth Star — a star of the field and of movement — energy wakes outside rather than in one place
Resentment Star (怨嗔) — a friction pair where expectation and resentment grow together — managing distance is the task
Ghost Gate Star (鬼門) — sharp intuition paired with deep dwelling — it catches what others miss
The 27-mansion value is the natal lodge; the 28-mansion value is the lodge assigned to the calendar day. Only the calculated mansions are shown here, without adding a personality claim.
Ten-year major cycles and annual cycles computed from the public birth date (as of 2026).
Only degree-checked contacts between slow transiting planets and natal personal planets are shown for 2026.
The timeline shows calculated shifts and planetary contacts; it does not fix a specific event in advance.
Birth time is not public, so houses, the Ascendant, and precise Moon aspects are omitted; only non-Moon planetary positions and aspects are shown.
The Moon sign is undetermined on this boundary day, so aspects to the Moon are omitted.
Sun and Venus in Taurus — the tenacity of one proven method; Mercury in Aries runs its calculations half a beat ahead of everyone else.
Birth time is not public, so houses, the Ascendant, and precise Moon aspects are omitted; only non-Moon planetary positions and aspects are shown.
The Ding Hai (丁亥) day pillar is a small fire (Ding) afloat on great water (Hai).
Start with the pillars, elements and birth chart below. The prose is best read as a plain-language explanation of those repeated structures, not as a verdict.
The Ding Hai (丁亥) day pillar is a small fire (Ding) afloat on great water (Hai). Not a blaze, but a single lantern lighting a night sea — a light that grows clearer the deeper the night gets. In this birth chart the day branch Hai carries the Direct Officer, so the water supports the flame rather than putting it out, and the Ding fire above it keeps pointing a direction: quietly, but persistently. What Jim Simons did in the markets was exactly this picture. Out of price noise nobody else could read, he lifted faint statistical signals — and kept the Medallion fund running on them for some thirty years. The lantern does not burn big; it burns long.
The chart's structure is the Hurting Officer (傷官格): the principal qi of the month branch Chen (辰), Wu (戊) earth, emerges in the heavenly stems to form it. The Hurting Officer is the talent that rejects the prescribed answer and redraws the game on its own terms. A pure mathematician who never trained in orthodox finance ignored Wall Street's common sense wholesale and redefined the market with data, models, and algorithms alone — the very grain of the Hurting Officer, which defies rules and then writes its own. The five elements count Wood 1, Fire 2, Earth 2, Metal 0, Water 1: Metal, the wealth star for a Ding day master, is entirely absent. The circuit that chases money itself is empty; instead, what the output stars produce — problems solved, systems built — draws wealth in after it. His remark that he was solving problems rather than chasing money rests on precisely this configuration.
The day branch Hai and the month branch Chen combine as the Chen–Hai Resentment Star (辰亥怨嗔), overlapping the Ghost Gate Star (鬼門關殺, Ghost Gate star) — a seat where the strength is intuition, catching a grain others miss before they know it is there. The sense that detected a faint statistical edge before the market did lands here. The same pairing, though, tends toward over-immersion — turning one thought over alone for a long time — which in Simons expressed itself as an extreme carefulness of verification, testing and re-testing every signal. The chart also carries three noble stars at once — Heavenly Noble (天乙貴人), Supreme Ultimate Noble (太極貴人), and Heaven Officer Noble (天官貴人) — the classic marks of a chart that backs learning and intellect: a Cold War codebreaker for the NSA, chair of Stony Brook's mathematics department, co-creator of Chern–Simons theory. He had already reached the summit of pure intellect before he ever crossed over to the markets, and the noble stars sit well with that route.
On the Western side of the chart, the Sun and Venus stand together in Taurus — the zodiac sign of the steady accumulator who does not switch methods — while Mercury in Aries (retrograde) squares Pluto, layering speed of thought with an almost compulsive depth.
"When the rule-rewriting Hurting Officer of the saju meets the bottom-digging Mercury–Pluto square of the birth chart in one person."
Ding (丁) fire is the fire of a candle or a lantern. Unlike the blazing sun-fire of Bing (丙), it is a small, precise light that points the way through darkness. Here that flame floats on the great water of the day branch Hai (亥). Water usually extinguishes fire, but the Direct Officer hidden in Hai supports the flame instead — a lamp that sways on the water yet does not go out. The mathematician who fished faint signals out of a night sea of noise and found a course by them lived out exactly this image. Not a showy light, but one that burns clearest when the night is darkest.
The principal qi of the month branch Chen (辰), Wu (戊) earth, emerges in the heavenly stems and forms the Hurting Officer structure. The Hurting Officer is the talent that refuses the prescribed answer and redraws the board at its own angle. A pure mathematician with no formal training in finance walked onto Wall Street, discarded fundamental analysis wholesale, and redefined the market with nothing but data, statistics, and algorithms — that is the Hurting Officer's native language. It defies authority and then becomes a new authority itself. Effectively creating quantitative investing as a genre sits squarely on this rule-breaking grain.
The five elements count Wood 1, Fire 2, Earth 2, Metal 0, Water 1. For a Ding fire day master, wealth is Metal — and there is not a single Metal anywhere in the stems or branches. The circuit that targets money directly is empty; what is thick instead is the output side, the Hurting Officer — the star of solving problems and building systems. A chart with empty wealth and strong output does not aim at money: it produces results that pull wealth in behind them. Simons's own line, that he was solving problems rather than chasing money, sits exactly on this configuration. And much of the fortune that followed was sent back out again — into basic science, mathematics education, and autism research. The empty wealth seat reads not as a lack, but as purity of purpose.
The month branch Chen (辰) and the day branch Hai (亥) form the Resentment Star (怨嗔) pair, overlapping with the Ghost Gate Star (鬼門關殺), the Ghost Gate star. This is a placement where intuition becomes a weapon — catching a grain in the data before anyone else sees it, sensing the faint statistical edge before the market wakes up to it. The Resentment Star side of the pairing, though, is over-immersion: chewing on a single thought alone for a long time. In Simons that surfaced as an extreme habit of verification — backtest upon backtest, doubting and re-checking every signal his intuition caught. Insight and compulsion sharing a single seat.
Sun and Venus stand side by side in Taurus. Taurus is the zodiac sign of unhurried accumulation — once a way of doing things is chosen, it is rarely abandoned. It is the placement of a man who spent thirty years polishing one statistical approach and guarding the Medallion fund built on it. With Venus — values and taste — in Taurus as well, trusting a proven method over a flashy new one is written into both identity and preference. Where the saju's Hurting Officer draws up the new board, the Taurus Sun refuses to redraw it: together they make the tenacity to run one system for decades.
Mercury, the planet of thinking, sits in Aries (retrograde). An Aries Mercury calculates ahead of the field — fast reads, fast decisions. On top of that, Mercury squares Pluto at a tight 1.1°, so the fast thinking refuses to stop at the surface and bores down to the floor: the hidden structure, the probabilities, the micro-biases underneath the visible price. Speed from Aries, depth from Pluto, overlaid on one mind — few planetary combinations fit a quantitative investor better.
Mercury and Jupiter form a sextile at 1.6°: microscopic calculation and macroscopic overview feed each other. It is the mind that can stay buried in the fine print of a formula without losing the terrain of the whole board — running the model and, at the same time, running the firm built around the model. In saju terms this rhymes with the Hurting Officer's output: relentless detail work in service of a system, and a wide frame that never forgets what the system is for. The small and the large, held at once.
The chart carries three noble stars at once — Heavenly Noble (天乙貴人), Supreme Ultimate Noble (太極貴人), and Heaven Officer Noble (天官貴人) — the classic marks of a chart that backs scholarship and insight. Before he ever touched a market, Simons had already reached the summit of the purely intellectual world: a Cold War codebreaker for the NSA, chair of the Stony Brook mathematics department, co-creator of Chern–Simons theory in differential geometry. A chart with the wealth seat empty and three noble stars of intellect draws the picture precisely: not a man who ran toward money, but one who solved problems at the top of his field — and found wealth trailing behind as the shadow of the work.
Mars sits in Gemini — drive channeled through information, several threads moving at once. It forms a sextile to Pluto at 3.0°, adding depth and tenacity to that drive: once the direction is set, surface resistance does not shake it. The saju echoes this with the Travelling Horse (post-horse) star and Earth Star (地殺), energies of movement and relocation — a career that kept crossing between worlds: codebreaking, then academia, then the markets. From the outside each crossing looked like a rupture; underneath, the same quiet, obstinate execution never stopped.
The Hurting Officer of the Four Pillars and the Mercury–Pluto square of Western astrology say the same thing: the one who refuses the surface and reads the structure underneath ends up holding the signal no one else can see. This reading is based on his public date of birth and is offered as reflective entertainment — it does not claim to define a life.
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Even without the hour pillar, the six known characters carry the main structure — the day master, day pillar and elemental balance. Areas governed by the hour pillar (such as late-life currents) are simply not read, and this page follows that rule.
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ⓘ Based on the publicly known birth date · birth time unknown (hour pillar, ascendant and houses omitted) · AI / classical readings are reference, not verdicts. This page is unaffiliated with the person and will be removed on request ([email protected]).