HYG: how its history is extended
HYG returns from its first trading day; earlier history from VWEHX.
Kind
Backfill chain
Extended from
1980-01-03
Through
2026-09-16
Sources
HYG → VWEHX
Validation at each junction
| Real series | Stands in before it | Real data from | Overlap (years) | Monthly correlation | Return gap (pp/yr) | Gate |
|---|---|---|---|---|---|---|
| HYG | VWEHX | 2007-04-11 | 19.42 | 0.9059 | -0.611 | 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.