EFA: how its history is extended
EFA returns from its first trading day; earlier history from VEA. (represented by the intl_dev asset chain before its own history)
Kind
Backfill chain
Extended from
1990-06-20
Through
2026-10-09
Sources
EFA → VEA
Validation at each junction
| Real series | Stands in before it | Real data from | Overlap (years) | Monthly correlation | Return gap (pp/yr) | Gate |
|---|---|---|---|---|---|---|
| EFA | VEA | 2001-08-27 | 25.12 | 0.9953 | -0.481 | pass (bars: corr ≥ 0.9, |gap| ≤ 1.0pp) |
| VEA | VTMGX | 2007-07-26 | 19.21 | 0.9986 | 0.021 | pass (bars: corr ≥ 0.9, |gap| ≤ 1.0pp) |
| VEA | VEA (synthetic) | 1999-08-18 | 27.14 | 0.9968 | 0.128 | 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.