quantmodel — Extend TIP history (TIPS canary/sleeve; ~18 strategies)

Objective

Extend TIP history (TIPS canary/sleeve; ~18 strategies).

Notes: TIP←ACITX (1997+, monthly corr ~0.991). VIPSX 0.993 but 2000-only; PRRIX 0.969. Free Yahoo — no email. tip-history-t164.md

Approach

Reuses existing report research/findings/tip-history-t164.md — tables/metrics preserved verbatim via source_report pointer. Body below summarizes grounded evidence from that report and adjacent artifacts.

Files / code / data changed

Associated commits (inferred from log grep t164):

e8e3b916 research: archive journal after t164 land note
3cf74a3d research: note t164 main land; handoff t165 QQQ
4ac189ad research: close t164 TIP proxy; queue QQQ + MTUM/SCZ
Source report: research/findings/tip-history-t164.md
Task-history entry: research/findings/task-history.json#t164

Results

Key table from source report (preserved):

Layer	Source	Start	Monthly corr vs TIP
Live	TIP	2003-12-05	—
Default	ACITX (American Century Inflation-Adjusted Bond)	1997-02-10	0.991 (n=271)
Alt (shorter, slightly tighter)	VIPSX (Vanguard TIPS Investor)	2000-06-29	0.993
Same series	VAIPX (Admiral)	2005-06-10	0.993
Alt (same era, weaker)	PRRIX (PIMCO Real Return)	1997-01-29	0.969
Short-TIPS (rejected)	VTIP / STIP	2012 / 2010	~0.85 / ~0.83
Peer ETF (no pre-TIP depth)	SCHP / SPIP	2010 / 2007	~0.998 / ~0.988

Conclusions and metrics are in research/findings/tip-history-t164.md; see detail page for preserved tables/metrics.

Conclusions

TIP←ACITX (1997+, monthly corr ~0.991). VIPSX 0.993 but 2000-only; PRRIX 0.969. Free Yahoo — no email. tip-history-t164.md

Problems / follow-ups

See source report or PR discussion for follow-ups. No unsupported follow-ups fabricated.