Research · measured
Does a Jupiter transit affect the stock market
Not enough observations to answer. Jupiter changes sign has happened 19 times in the data, and this platform will not call anything measured below 30.
What the measurement says
Jupiter changes sign occurred 19 times on Nifty 50 between 2015-11-09 and 2026-10-13. Each row compares the average move after the event against the average move on an ordinary day in the same series.
| Horizon | Average after | Ordinary day | Difference | 95% interval | q |
|---|---|---|---|---|---|
| t+1 | +0.45% | +0.04% | +0.40% | -0.10% to +0.95% | 0.40 |
| t+2 | +0.41% | +0.09% | +0.32% | -0.25% to +0.83% | 0.78 |
| t+3 | +0.28% | +0.13% | +0.15% | -0.48% to +0.78% | 0.78 |
| t+5 | +0.43% | +0.22% | +0.21% | -0.70% to +1.18% | 0.78 |
| t+10 | +0.64% | +0.45% | +0.19% | -1.19% to +1.90% | 0.78 |
q is the p-value after correcting for examining five horizons together. A single horizon looking good is expected when you look at five; q is what that looks like once the arithmetic accounts for it. This platform treats a result as measured only when q < 0.05, the interval excludes zero, and n is at least 30. The strongest horizon here reached q = 0.40.
The hit rate trap
After jupiter changes sign, the next session closed higher 63% of the time. Quoted alone, that reads like an edge, and it is the number most sites would print.
On an ordinary day in the same period the market closed higher 54% of the time. The comparison that matters is against that baseline, not against a coin flip. Almost every "63% win rate" claim in this field is measuring the fact that Indian equities rose over the period.
And on a single stock
The same test on Reliance Industries, whose history runs from 2006-10-16 and so covers 33 occurrences rather than 19: also nothing. A longer series does not rescue it.
| Horizon | Average after | Ordinary day | Difference | 95% interval | q |
|---|---|---|---|---|---|
| t+1 | +0.79% | +0.03% | +0.76% | +0.13% to +1.46% | 0.05 |
| t+2 | +1.31% | +0.06% | +1.25% | +0.39% to +2.12% | 0.05 |
| t+3 | +1.89% | +0.09% | +1.80% | +0.74% to +2.87% | 0.05 |
| t+5 | +2.10% | +0.15% | +1.95% | +0.54% to +3.52% | 0.05 |
| t+10 | +2.93% | +0.29% | +2.64% | +0.54% to +5.00% | 0.05 |
How to check this yourself
The figures come from the NSE daily files, which anyone can download. The workbench runs the same test on any configuration you assemble, reports every horizon rather than the best one, and says FLAT when it finds nothing — which is most of the time.
Questions
Does a Jupiter transit affect the stock market?
There have been 19 occurrences in 2015–2026, which is too few to separate an effect from chance. The honest answer is that it is unanswerable with this much history, not that the answer is no.
What was actually measured?
Every occurrence between 2015-11-09 and 2026-10-13 on Nifty 50, using NSE end-of-day closes. Forward returns at one, two, three, five and ten sessions are compared against the unconditional average of the same series, with 10,000 resamples and a Benjamini-Hochberg correction across the five horizons.
Why is the hit rate not the answer?
Because the market rises on most days anyway. After jupiter changes sign the next session closed up 63% of the time — which sounds like an edge until you see that an ordinary day closes up 54% of the time. The comparison is against the baseline, never against 50%.
Does this prove astrology does not work?
No. It says this particular configuration, on this instrument, over this period, at these horizons, did not produce a measurable effect. Other configurations are not tested by this result, and absence of evidence over a finite sample is not proof of absence.
Before you use this
Astro World Finance is research and analytics software. It is not investment advice, and nothing it produces is a recommendation to buy or sell any security. There is no established evidence that planetary positions predict returns.
Trading in securities and derivatives carries risk of loss. Measured past behaviour does not establish future behaviour. Anyone providing investment advice to others in India requires registration with SEBI.