The Science of the Zodiac

People Really Do Play It Safe in Their Own Zodiac Year

Last updated: July 21, 2026

An unlucky year that runs on a schedule

Every twelve years your own sign comes around again, and in Chinese tradition that is not good news. The Ben Ming Nian — your zodiac birth year — is widely believed to bring misfortune, which is why people mark it with protective customs such as wearing red. Most accounts of the belief stop at the folklore. A team of economists — Fisman, Huang, Ning, Pan, Qiu and Wang — kept going, and in a 2023 Management Science paper showed that the unlucky-year belief leaves fingerprints on survey answers, stock volatility and corporate strategy. It is a striking case of this series’ central point: zodiac beliefs have real, measurable effects on the world — not because the calendar controls fate, but because believers change their behavior right on cue.

Ordinary people get more cautious

The researchers first examined survey evidence from China. Respondents were about 2 percentage points more likely to prefer no-risk investments when they happened to be surveyed during their own zodiac year. Same people, same economy; the only thing that had shifted was where they stood in the twelve-year cycle, and with it the feeling that this was a year to be careful.

Companies catch it too

The more consequential findings sit in the boardroom. When the chairman of a listed Chinese company was in his or her zodiac year, the firm’s stock showed lower return volatility, and the company pulled back on R&D and acquisitions. That caution was not free: the deals such firms did make during those years earned worse announcement returns. A folk belief about personal luck, in other words, measurably reshaped what major corporations did with shareholders’ money. Zodiac beliefs, the study shows, have real corporate consequences.

The mechanism, spelled out

Nothing about a zodiac year emits risk, and no force reaches from the calendar into a trading floor. The chain runs entirely through people. A chairman who has absorbed the idea that this is a dangerous year postpones the bold acquisition; a household in its Ben Ming Nian parks its savings somewhere safe. Multiply that private caution across millions of believers and thousands of firms, and the twelve-year cycle becomes visible in market data — a superstition made real by the behavior it inspires.

What this does not mean

The study does not show that zodiac years cause bad luck. If anything, the poorly received deals suggest the opposite lesson: the caution itself carried costs. Nor is it a reason to time anyone’s portfolio to a birth sign — the pattern documents belief at work, not fortune. What it demonstrates is that an idea held sincerely enough becomes an economic force, one large enough to register in the statistics of listed companies.

If your own zodiac year is approaching and you are curious about the tradition behind all this caution — the customs, the red accessories, the ways people steady themselves for a jinxed year — our Ben Ming Nian guide walks through the practice as the piece of living culture it is. Enjoy it as heritage. The data above is the closest thing the belief has to a superpower, and it comes entirely from us.

Sources

  1. Fisman, Huang, Ning, Pan, Qiu & Wang (2023), "Superstition and Risk Taking: Evidence from 'Zodiac Year' Beliefs in China", Management Science 69(9)

These articles summarize published research about the social effects of zodiac beliefs. They are not an endorsement of astrological causation — and neither is the rest of this site, which presents the tradition for cultural education and reflection.

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