古河藩公記 一｜前日比は晴れ、寄り後は向かい風｜2026.10.21
A positive day, a negative open-to-close return Furukawa Electric opened at JPY 3,266 at 09:03 JST, 4.48% above its previous close of JPY 3,126. It reached JPY 3,287
A positive day, a negative open-to-close return
Furukawa Electric opened at JPY 3,266 at 09:03 JST, 4.48% above its previous close of JPY 3,126. It reached JPY 3,287 at 09:26, recorded its low of JPY 3,158 at 13:16, and finished at JPY 3,200. The shared data tables below contain the recorded prices and calculations.
The 2.37% gain from the previous close coexisted with a 2.02% decline from the opening price. The close was 0.52% below the full-session VWAP of JPY 3,216.8. Of the JPY 140 opening gap, JPY 74 remained at the close, or approximately 52.86%.
The sequence shows an early high, a later low and a recovery from that low into the close. Daily data cannot reveal every intervening rebound or establish when the price crossed the live VWAP. It also cannot identify profit-taking, short covering or institutional accumulation.
The PTS observation belongs to the following session's information set
The observed PTS price was JPY 3,219 at 23:58 JST on 21 October, 0.59% above the TSE close. PTS volume was 55,300 shares, approximately 0.38% of daytime TSE volume; the trading hours and participants differ, so this ratio is only a scale comparison. The PTS high of JPY 3,256 and low of JPY 3,180 show that the evening session also moved in both directions. These observations were available after the TSE session and cannot explain its opening gap.
What I conclude, and what remains unresolved
My interpretation is that the higher opening price was not sustained through the regular session, although the close retained a gain over the previous day. This is an observation about price action, not a determination of the cause.
AI-related investment demand and financing conditions are useful questions for ongoing company research. This entry does not establish a new company-specific catalyst or attribute the day's reversal to one news item. Comparable data for Fujikura, Sumitomo Electric and TOPIX have not been assembled in this entry, so it makes no ranking of relative strength.
In the next observation, I will watch whether the stock sustains trading above that session's opening price and contemporaneous VWAP. JPY 3,216.8 remains a historical reference for 21 October; the next session has its own evolving VWAP. A sustained recovery would support a stronger reading of intraday demand; repeated failures would weaken it. Neither outcome alone establishes the state of the underlying business.
Sources and timing
The detailed figures come from my recorded market data reproduced below. The original data-provider screen has not been identified or independently reconciled for every field. Traders Web's dated quote separately corroborated the TSE close of JPY 3,200 and change of JPY 74, or 2.37%. The calculations are arithmetic checks, rounded to two decimals. The PTS observation is timestamped 23:58 and is not described as an independently verified final closing price.
This entry was compiled on 22 October as a retrospective note on the 21 October session. It is not a scenario fixed before that session. External links and the existing UACJ study are listed below.
