Quantitative Momentum Platform — Japan

AIBROKER is a Japan-headquartered quantitative momentum platform operated by Kiyari GK under FIEA 情報提供 status. Daily Nikkei 225 and TOPIX 500 momentum rankings with ERM regime overlay.

AIBROKER is operated by Kiyari GK (合同会社きやり), a Japanese limited liability company headquartered in Chigasaki, Kanagawa. We publish daily quantitative momentum rankings under FIEA 情報提供 (information-provision) status — built specifically for Japan-based and Japan-curious investors.

AIBROKER is a Japan-headquartered platform

Our operations are subject to Japanese law. FIEA 情報提供 status means we publish research and rankings — we do not solicit, recommend, or transact on behalf of users. Japan-based investors can use AIBROKER under a clear domestic regulatory framework. International users get research from a firm operating under Japanese supervisory standards — which, for systematic research, are stricter on data lineage and disclosure than many comparable jurisdictions.

Coverage focused on Japan

  • Nikkei 225 — daily momentum rankings, price-weighted, calibrated to Japan regime dynamics. View today's Nikkei 225 ranking.
  • TOPIX 500 — broader market-cap-weighted Japan coverage, daily ranking and backtest.
  • Cross-region context — the global momentum ranking pools Nikkei 225 against S&P 500, NASDAQ 100, FTSE 100, EURO STOXX 50, and sector ETFs.

On the academic debate about Japan momentum

Asness, Moskowitz & Pedersen (2013) famously noted that 12-month momentum has been weaker in Japan than in other major markets, while value has been stronger. This is true on average — but the picture changes meaningfully when you condition on regime. Momentum returns in Japan are concentrated in specific regimes that the Empirical Regime Model is designed to flag. The right takeaway is not "momentum does not work in Japan"; it is "momentum in Japan is more regime-dependent than in the US, and the regime overlay matters more."

About Kiyari GK

Frequently asked questions

Is AIBROKER a Japanese company?

Yes. AIBROKER is operated by Kiyari GK (合同会社きやり), a Japanese limited liability company headquartered in Chigasaki, Kanagawa. We publish research under FIEA 情報提供 (information-provision) status.

Does AIBROKER cover Japanese stocks?

Yes. We publish daily momentum rankings for the Nikkei 225 and TOPIX 500, with the Empirical Regime Model calibrated specifically to Japan equity market dynamics including the post-2013 reflation regime and earlier deflationary periods.

Does momentum investing work in Japan?

Momentum returns in Japan are more regime-dependent than in the US — Asness et al. (2013) documented weaker unconditional momentum in Japan than in other major markets. Conditioning on the market regime via a classifier such as ERM materially changes the picture and is part of why AIBROKER publishes a separate Japan-calibrated overlay.

Can Japanese investors use AIBROKER?

Yes. AIBROKER operates under Japanese regulatory framework. We publish information and rankings only — we do not transact, solicit, or provide individualized investment advice. Please review the disclaimer for the full FIEA notice.