UMC earnings date, and what happened the last 4 times

Next report

Wed Oct 28

Quality Score today 11

Before the open, tomorrow. Confirmed by the company.

UMC closed higher after 1 of its last 4 reports. On average it closed -1.0% the session after a report.

The moment UMC reports

Its figures, in plain words
How it moves after, beside its last four
Its Quality Score going in, and after

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What happened after UMC's last 4 reports

UMC's last 4 earnings reports
Reported	Score going in	Gap	Reaction	5 sessions
Jul 29, 20262026 · Before open	5estimated	-1.8%	-1.4%	+18.8%
Apr 29, 20262026 · Before open	12estimated	+6.6%	+9.3%	+20.1%
Jan 28, 20262026 · Before open	18estimated	-8.2%	-8.8%	-21.1%
Oct 29, 20252025 · Before open	11estimated	+2.2%	-3.1%	-0.4%

Jul 29, 2026, before the open: that session UMC opened -1.8% and closed -1.4%, and five sessions on it stood +18.8%. Its Quality Score going in was 5 (Below Average), estimated.
Apr 29, 2026, before the open: that session UMC opened +6.6% and closed +9.3%, and five sessions on it stood +20.1%. Its Quality Score going in was 12 (Above Average), estimated.
Jan 28, 2026, before the open: that session UMC opened -8.2% and closed -8.8%, and five sessions on it stood -21.1%. Its Quality Score going in was 18 (Excellent), estimated.
Oct 29, 2025, before the open: that session UMC opened +2.2% and closed -3.1%, and five sessions on it stood -0.4%. Its Quality Score going in was 11 (Above Average), estimated.

Across these 4 reports UMC opened higher after 2 of 4 and closed higher after 1 of 4; on average it opened -0.3%, closed -1.0%, and stood +4.4% five sessions on. Its Quality Score is 11 today, against 5 going into its Jul 29, 2026 report.

Gap: where the stock opened the session after the report. Reaction: where that session closed. Both against the close before the report. The largest of the 4: +9.3% after the Apr 29, 2026 report. A score marked estimated was worked out afterwards from that day's prices and filings; Breakaway has recorded every score live since Sep 9 2026.

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Questions about UMC's earnings

As of Oct 27, 2026: United Microelectronic (UMC): reports Wed Oct 28, before the open. UMC closed higher after 1 of its last 4 reports. Its Quality Score is 11 (Above Average). Scores as of 12:12 AM ET, 15 minutes behind.

When is UMC's next earnings date?

Reports Wed Oct 28, before the open, a date the company confirmed. UMC closed higher after 1 of its last 4 reports. Past behavior, not a forecast.

Does UMC report before or after the market?

UMC reports Wed Oct 28, before the open. Its last 4 reports came before the open.

How did UMC stock react to its last earnings report?

Jul 29, 2026, before the open: that session UMC opened -1.8% and closed -1.4%, and five sessions on it stood +18.8%.

Does UMC stock usually go up after earnings?

UMC closed higher after 1 of its last 4 reports. On average it closed -1.0% the session after a report, after opening -0.3%. Past behavior, not a forecast.

United Microelectronic's page has its Quality Score, its chart, and its insiders' trades. Everyone reporting beside it: this week's earnings.