VTIAX: how its history is extended
VTIAX returns from its first trading day; earlier history from VXUS. (represented by the intl_total asset chain before its own history)
Kind
Backfill chain
Extended from
1990-06-20
Through
2026-09-11
Sources
VTIAX → VXUS
Validation at each junction
| Real series | Stands in before it | Real data from | Overlap (years) | Monthly correlation | Return gap (pp/yr) | Gate |
|---|---|---|---|---|---|---|
| VTIAX | VXUS | 2010-11-29 | 15.78 | 0.9983 | -0.121 | pass (bars: corr ≥ 0.9, |gap| ≤ 1.0pp) |
| VXUS | VGTSX | 2011-01-28 | 15.62 | 0.9987 | 0.082 | pass (bars: corr ≥ 0.9, |gap| ≤ 1.0pp) |
| VXUS | VXUS (synthetic) | 1996-04-30 | 30.37 | 0.9884 | -0.197 | pass (bars: corr ≥ 0.9, |gap| ≤ 1.0pp) |
Figures on this page are computed from the data store when the page renders; the gate is re-checked every time an extension is used. Method: the lab's tracking standard, lab.data.chains.