CIEN earnings date, and what happened the last 4 times

Next report

Thu Dec 10

Quality Score today 13

Before the open, in 44 days. Expected: the company has not confirmed it.

CIEN closed higher after 1 of its last 4 reports. On average it closed -6.9% the session after a report.

The moment CIEN 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 CIEN's last 4 reports

CIEN's last 4 earnings reports
Reported	Score going in	Gap	Reaction	5 sessions
Sep 3, 20262026 · Before open	9estimated	+0.1%	-10.4%	-5.5%
Jun 4, 20262026 · Before open	20estimated	-11.0%	-13.7%	-29.9%
Mar 5, 20262026 · Before open	18estimated	-9.2%	-12.9%	-1.1%
Dec 11, 20252025 · Before open	18estimated	+6.5%	+9.3%	-8.1%

Sep 3, 2026, before the open: that session CIEN opened +0.1% and closed -10.4%, and five sessions on it stood -5.5%. Its Quality Score going in was 9 (Average), estimated.
Jun 4, 2026, before the open: that session CIEN opened -11.0% and closed -13.7%, and five sessions on it stood -29.9%. Its Quality Score going in was 20 (Exceptional), estimated.
Mar 5, 2026, before the open: that session CIEN opened -9.2% and closed -12.9%, and five sessions on it stood -1.1%. Its Quality Score going in was 18 (Excellent), estimated.
Dec 11, 2025, before the open: that session CIEN opened +6.5% and closed +9.3%, and five sessions on it stood -8.1%. Its Quality Score going in was 18 (Excellent), estimated.

Across these 4 reports CIEN opened higher after 2 of 4 and closed higher after 1 of 4; on average it opened -3.4%, closed -6.9%, and stood -11.2% five sessions on. Its Quality Score is 13 today, against 9 going into its Sep 3, 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: -13.7% after the Jun 4, 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 CIEN's earnings

As of Oct 27, 2026: Ciena (CIEN): expected to report Thu Dec 10, before the open. CIEN closed higher after 1 of its last 4 reports. Its Quality Score is 13 (Above Average). Scores as of 12:12 AM ET, 15 minutes behind.

When is CIEN's next earnings date?

Expected to report Thu Dec 10, before the open, a date Breakaway expects from the company's usual timing; the company has not confirmed it. CIEN closed higher after 1 of its last 4 reports. Past behavior, not a forecast.

Does CIEN report before or after the market?

CIEN is expected to report Thu Dec 10, before the open. Its last 4 reports came before the open.

How did CIEN stock react to its last earnings report?

Sep 3, 2026, before the open: that session CIEN opened +0.1% and closed -10.4%, and five sessions on it stood -5.5%.

Does CIEN stock usually go up after earnings?

CIEN closed higher after 1 of its last 4 reports. On average it closed -6.9% the session after a report, after opening -3.4%. Past behavior, not a forecast.

Ciena's page has its Quality Score, its chart, and its insiders' trades. Who reports this week: the earnings calendar.