THIS CALENDAR DATE IN EVERY EARLIER YEAR — RESEARCH PACKAGE (2026-10-26, CURRENT)

EXECUTIVE SUMMARY
For the build date, what each stored series did on the same calendar date in every earlier year with a session: the share of years it rose, the median, the best and the worst. Rebuilt daily.

KEY FINDINGS
- On October 26 the S&P 500 (SPY) has closed higher in 11 of 24 earlier years (46%), with a median move of −0.06% — a small sample with no mechanism behind it, which is the point.

CHART
The share cards on /market-memory/ and /market-memory/this-day/ render the same figures at 1200×630 and 1080×1080; each page has a download button.

SOURCE AND METHOD
Daily closes from Federal Reserve Bank of St. Louis (FRED), Twelve Data; series and identifiers in the source manifest at /market-memory/source-manifest.json
Only years with a session on exactly this calendar date are counted; a weekend or holiday is absent, not shifted. Moves are close-to-close percentage changes.
Full method: https://www.wealthsignalnyc.com/market-memory/methodology/
Data: https://www.wealthsignalnyc.com/research/this-day-in-market-history/this-day-in-market-history.csv (derived statistics; no index levels)

ATTRIBUTION
Source: Wealth Signal Market Memory (https://www.wealthsignalnyc.com/research/this-day-in-market-history/), computed from Daily closes from Federal Reserve Bank of St. Louis (FRED), Twelve Data, as of 2026-10-26.

SHORT POST
On October 26 the S&P 500 (SPY) has closed higher in 11 of 24 earlier years (46%), with a median move of −0.06% — a small sample with no mechanism behind it, which is the point.
Historical context, not a forecast. https://www.wealthsignalnyc.com/research/this-day-in-market-history/

JOURNALIST PITCH (draft — read it before you send it)
Subject: A dataset, not a take: this calendar date in every earlier year
I run Wealth Signal, a small site that recomputes market-history statistics from FRED and other primary series at every build. One table you may find useful: On October 26 the S&P 500 (SPY) has closed higher in 11 of 24 earlier years (46%), with a median move of −0.06% — a small sample with no mechanism behind it, which is the point. The CSV is free to use with attribution, every number is recomputed from the source series and the method is public. No opinion attached.

NEWSLETTER LINE
On October 26 the S&P 500 (SPY) has closed higher in 11 of 24 earlier years (46%), with a median move of −0.06% — a small sample with no mechanism behind it, which is the point.