Toho Zinc stock faces phased TOPIX weight cuts after review

Published on 10/08/2026 at 03:05 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Toho Zinc stock faces phased TOPIX weight cuts after an October 7 review placed it among 683 transitional stocks. Q1 revenue rose to JPY 31.10 billion.

Toho Zinc, JP3599000001, Illustration mit AI erstellt.

Toho Zinc stock (ISIN JP3599000001) was trading at JPY 856 on the Tokyo Stock Exchange on October 8, 2026, down 3.60 percent from the prior close of JPY 888. The key company development is an index review that places the Japanese metals producer among stocks facing phased TOPIX weight reductions.

TOPIX review creates a new pressure point

According to Kabutan on October 7, 2026, Japan Exchange Group designated Toho Zinc and 682 other stocks as transitional measures stocks under the revised TOPIX criteria. The changes are scheduled to reduce index weights quarterly across eight stages, with removal from the index at the end of July 2028 unless a later review halts the reductions.

The review matters because Toho Zinc already has a relatively narrow market value of JPY 11.8 billion as of October 8, 2026. The stock traded between JPY 852 and JPY 866 during the session, while its 52-week range stood at JPY 640 to JPY 2,510.

Quarterly figures show a mixed recovery

For the quarter ended June 30, 2026, revenue rose to JPY 31.10 billion from JPY 26.87 billion a year earlier, according to TradingView. Net income returned to JPY 259.00 million from a JPY 1.11 billion loss, but operating profit remained negative at JPY 250.00 million.

The full-year outlook for the fiscal year ending March 2027 calls for revenue of JPY 178.50 billion and net income of JPY 3.45 billion. That forecast gives the index pressure a fundamental counterpoint, although the first quarter still included a JPY 581.00 million pretax loss.

Next results date approaches

Folivue lists November 13, 2026, as Toho Zinc's next earnings date. For investors, the combination of the TOPIX transition timetable and the gap between quarterly revenue growth and operating profitability defines the next checkpoint.

Toho Zinc stock trades at JPY 856

Toho Zinc stock was last at JPY 856 on the Tokyo Stock Exchange on October 8, 2026 at 9:48 a.m. JST, with volume of 131,600 shares and a daily change of minus 3.60 percent.