Seiko Group shares plunge 11.7% on second-half profit warning
The watchmaker’s stock slid despite an upward revision, as the company said the second half of its fiscal year would deliver only half the projected profit.
The watchmaker’s stock slid despite an upward revision, as the company said the second half of its fiscal year would deliver only half the projected profit. Published 2026-11-12 by Falling Shares.
| By Falling Shares Intelligence, edited by Wung Thomas, Editor-in-Chief

Written by Falling Shares Intelligence, our automated newsroom, from the public sources listed below and live market data. Every figure is checked against that material before publication, but the story has not been reviewed by a human editor. Check the linked sources before relying on it, and report errors to info@fallingshares.com.
Shares in Seiko Group Corporation fell 11.7% on Wednesday after the company said its second-half profit would be half of the full-year forecast, a trigger that sent the stock to the daily limit down. The drop erased gains from the Nikkei 225’s third consecutive day of rises.
Profit plan sparks limit down
Seiko Group’s stock dropped to the ‘stop-low’ price during Wednesday’s trading session, local media reported. The fall followed an earnings update in which the company stated that the second half of its fiscal year would account for only half of the previously projected profit. This guidance came despite an earlier upward revision to the full-year outlook, which failed to reassure the market.
The company’s announcement drove the share price sharply lower, with the stock closing near its daily floor. None of the reports reviewed by Falling Shares gave a reason for the fall beyond the profit guidance itself.
Market context and volatility
The broader market rose on the day, with the Nikkei 225 gaining 789 yen to close at 61,248 yen. This marked the index’s third consecutive day of gains. By Falling Shares’ measure, the stock’s move was largely company-specific, with 3.6% of the total 7.0% shift attributed to firm-specific factors rather than the broader market’s 3.4% rise.
Falling Shares rates the stock Unstable, citing an annualised volatility of 75.5% compared to 27.6% for the benchmark. The stock has seen 23 sessions with moves of 5% or more in the past six months. Over the last five days, the share price has fallen 9.6%, while the one-month decline stands at 17.5%.