Extended histories
Some ETFs are young. Where the lab has declared a backfill (an older mutual fund or futures contract with the same exposure) or a validated synthetic, the Backtest tool can extend a ticker's history when you ask it to. Every extension is gated: monthly correlation of at least 0.90 with the real series over their overlap and an annualised return gap of at most one point. An extension that stops tracking is refused.
- ACWI
- AGG
- AOA
- AOK
- AOM
- AOR
- BIL
- BIV
- BND
- BNDX
- BSV
- EEM
- EFA
- FSKAX
- FTIHX
- FXAIX
- FXNAX
- GC=F
- GLD
- GLDM
- GSG
- HYG
- IAU
- IEF
- IEFA
- IEMG
- IJH
- IJR
- ITOT
- IVV
- IWD
- IWF
- IWM
- IXUS
- NTSX
- PDBC
- SCHA
- SCHB
- SCHE
- SCHF
- SCHG
- SCHM
- SCHV
- SCHZ
- SGOV
- SHY
- SPY
- SWAGX
- SWISX
- SWPPX
- SWTSX
- TBILL.IRX
- TIP
- TLT
- VAIPX
- VAW
- VB
- VBILX
- VBIRX
- VBK
- VBLAX
- VBR
- VBTLX
- VCLT
- VCR
- VDC
- VDE
- VEA
- VEU
- VFH
- VFIAX
- VFINX
- VFITX
- VFWIX
- VGIT
- VGLT
- VGSH
- VGT
- VHT
- VIGAX
- VIMAX
- VIS
- VMFXX
- VNQ
- VO
- VOE
- VONG
- VONV
- VOO
- VOT
- VPU
- VSGAX
- VSIAX
- VSMAX
- VSS
- VTI
- VTIAX
- VTIP
- VTSAX
- VTV
- VTWAX
- VTWO
- VUG
- VUSTX
- VV
- VVIAX
- VWO
- VXUS
Extended history is off by default in every tool. Results that use it say so and mark the junction dates.