Learn J-Quants
Understand J-Quants prices, financial disclosures and listed issues, then validate and preserve inputs for Japanese-equity research.
What you will learn
Obtaining data does not establish research-ready inputs. Check official fields and versions, price adjustments, disclosure timing, missing values and preservation rules before using a public lesson.
Follow the sequence below from definitions to input checks and public lessons. Distinguish numerical illustrations from actual run results.
Service and datasets
What Is J-Quants? Research Uses and LimitsJ-Quants provides Japanese market data for individual users.J-Quants Price Data: Fields and Observation DatesA daily bar represents one security on an observation date.J-Quants Financial Data: Periods and UnitsFinancial data has a reporting period and a disclosure timeline.J-Quants Disclosures: Times and Financial RevisionsA reporting period ends before its results are published.J-Quants Listed Issues and Market SegmentsA security master changes with listings, delistings and classifications.
Check before research
What to check first in J-Quants price dataInspect existing local price data for dates, price conventions, duplicates, trading halts and freeze records.J-Quants Adjusted Prices and Stock SplitsIn a fictional two-for-one split, a price moving from 2,000 to 1,000 alongside doubled shares does not itself imply a halving of holding value.J-Quants and Point-in-Time ResearchPoint-in-time research checks whether every input was available by the corresponding decision cutoff.J-Quants Data Storage and Reproducible ResearchReproduction requires matching input content, selection rules, transformations and software versions.
Build a study
Japanese Equity Backtests with J-Quants: Input DesignDefine what information drives a decision, when that decision occurs and when execution follows.Factor Analysis with J-Quants Data: Inputs and EvaluationFactor analysis turns security characteristics into values and evaluates their relationship with later returns.Use J-Quants Data in KabuForge: Your First Research RunSelect, validate and freeze existing local price data, run a public teaching rule, and check the input identity and results.
Explore connected topics
Applies to: main source candidate (unpublished) · Public source docs/en_US/GUI_RESEARCH_COURSES.md
Reviewed · KabuForge