BrainTrust Investment Lab › SS1 — Data Profiling › prices
prices — the SS1 walk
The daily tape — 13.6 million closing prices and the bars behind them. The last close is what everything else revolves around, so this lane is measured before anything downstream is allowed to lean on it.
One source per sheet; every step CERTIFIED or OWED by BrainTrust Staff, matched against the book’s page.
steps certified
13 of 13
step candidate_identified · IDENTIFY: the lane exists in the register ✓ CERTIFIED · p.450-451
step light_profiling_assessment · LIGHT STRATEGIC ASSESSMENT (captures + shelf + cards) ✓ CERTIFIED · p.450
step go_no_go · REVIEWING RESULTS ✓ CERTIFIED · p.450-451
step tactical_data_profiling · TACTICAL PROFILE of a live provider sample ✓ CERTIFIED · p.451, 502
step explore_content_and_relationships · MEASURE THE PROVIDER, NOT ITS DOCS ✓ CERTIFIED · p.433
step usable_state · THE FLAW LIST + THE CONVERSION BURDEN ✓ CERTIFIED · p.433
step identify_the_facts · CANDIDATE FACTS: counts and amounts ✓ CERTIFIED · p.437
step ensure_clean_hierarchies · HIERARCHY VERDICT ✓ CERTIFIED · p.501
step detailed_specifications · THE DECLARATIONS -- the walk's real product ✓ CERTIFIED · p.451
step sponsors_expectations · THE EXPECTATION NOTE TO BRAINTRUST STAFF ✓ CERTIFIED · p.451
step mirror · THE MIRROR ASSURANCE (100%, no silent gaps) ✓ CERTIFIED · p.[house] rooted in 451
step tables · THE LANDING (blocked until step 9's SIGN) ✓ CERTIFIED · p.421 (Develop Physical Database Model, under the Physical Design heading on p.420)
step level_closure · the level closes only when every step below it passed, by its own program, at… ✓ CERTIFIED · p.[house] WALK_ORDER_LAW s0a axiom 5 + s0a.7 (owner ruling 2026-08-29)