HISTORICAL MARKET SNAPSHOT — TOPIX opened at 4,055.11 on 15 September 2026, a 3.10-point gap-down, and was at 4,047.69 shortly afterward.

TOPIX facts preserved from publication

  • TOPIX open: 4,055.11
  • Previous close: 4,058.21
  • Opening gap: 3.10 points / 0.08% lower
  • Intraday reading: 4,047.69; -10.52 / -0.26% at 09:48:45 JST

What this dated TOPIX record means

The weighting and membership rules behind TOPIX determine which constituents dominate the move. The headline direction does not mean every security in that market changed together. The permanent TOPIX URL now functions as a sourced archive entry, not a live ticker. Current information belongs in the newest independently timestamped report.

Why the observation mattered

TOPIX is a broad, free-float-adjusted capitalization-weighted measure of Japanese equities and complements the price-weighted Nikkei 225. A market archive gains credibility when TOPIX observations are not overwritten. Readers can follow the sequence and judge later claims against the preserved earlier record.

What readers were watching

The morning range, session direction and the final cash-market close relative to the previous close. This TOPIX page is retained because dated facts can support a market timeline. It is not refreshed to a current price, and its original publication time remains unchanged.

TOPIX timeline placement

The preceding TOPIX entry was Nikkei falls 0.95% after gap-down open while TOPIX gains 0.62%.

Sources and reconstruction method

CapKet used the saved TOPIX key points as the numerical record and the attached official/reference pages for interpretation. The timestamp boundary is 2026-09-15T00:48:45Z.

Historical-data and risk note: TOPIX can move rapidly and archived public data may later be corrected. This is general news, not advice, fair value, a target or an executable quotation.