Reproduction is one of the most valuable things a research group can do, and NOVAQ has done a lot of it.
What matched
A widely quoted session frequency of about 81% reproduced at 80.7% on ES across 2,148 sessions, within one point of the author's figure and of Vašek's independent study. An early-retracement branch came to 99.2% in both stacks. An independent check reproduced 15 of 17 published NQ statistics within about four points, and morning structures replicated on recent data within about a point. A partner's pipeline was rebuilt from raw data with identical tables, and an indicator engine matched with zero deviations across more than 770,000 buckets.
The next question
Being able to reproduce a number makes it possible to ask what it means. The control keeps each day's minute moves and randomises their signs. Volatility stays, information goes. On that control, the 81% frequency looks much the same, and in an auction report only 2 of 21 measurements differed from chance.
A famous session frequency, reproduced and controlled (ES)
How to read this
The numbers are accurate, and they describe the geometry of price well. They are valuable as expectations for planning a day. For an entry signal, one needs something the random path does not produce.
It helps in both directions
Comparing results also exposed a calendar-grouping error in NOVAQ's own session analytics, fixed the same day. Replication improves the replicator too.
Limits
The auction report covers one regime, excludes costs and was not recomputed in NOVAQ. Author numbers, replication numbers and NOVAQ measurements are kept separate.