GSG: how its history is extended
GSG returns from its first trading day; earlier history from DBC. (represented by the commodities asset chain before its own history)
Kind
Backfill chain
Extended from
2006-02-07
Through
2026-09-14
Sources
GSG → DBC
Validation at each junction
| Real series | Stands in before it | Real data from | Overlap (years) | Monthly correlation | Return gap (pp/yr) | Gate |
|---|---|---|---|---|---|---|
| GSG | DBC | 2006-07-21 | 20.07 | 0.9599 | -4.043 | FAIL (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.