How Will Ciena Stock React To Its Upcoming Earnings?

June 3rd, 2026 by Trefis Team
CIEN: Ciena logo
CIEN
Ciena

Ciena (NYSE:CIEN) is set to report its earnings on Thursday, June 4, 2026. The company has $89 Bil in current market capitalization. Revenue over the last twelve months was $5.1 Bil, and it was operationally profitable with $420 Mil in operating profits and net income of $229 Mil. While the post-earnings stock reaction will depend on how the results and outlook stack up against investor expectations, a detailed look at historical results can aid you if you are an event-driven trader.

Here is how: either understand the historical odds and position yourself prior to the earnings announcement, or look at the correlation between immediate and medium-term returns post earnings and enter a trade one day after the announcement.

See earnings reaction history of all stocks

Separately, the Trefis High Quality Portfolio has outperformed its benchmark to achieve returns exceeding 105% since its inception.

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Trefis: CIEN Stock Insights

Ciena’s Historical Odds Of Positive Post-Earnings Return

Some observations on one-day (1D) post-earnings returns:

  • There are 20 earnings data points recorded over the last five years, with 11 positive and 9 negative one-day (1D) returns observed. In summary, positive 1D returns were seen about 55% of the time.
  • However, this percentage decreases to 50% if we consider data for the last 3 years instead of 5.
  • Median of the 11 positive returns = 9.2%, and median of the 9 negative returns = -11%

Additional data for observed 5-Day (5D) and 21-Day (21D) returns post earnings are summarized along with the statistics in the table below.

  Forward Returns
Earnings Date 1D 5D 21D
3/5/2026 -12.9% -1.0% 30.3%
12/11/2025 9.2% -8.1% 5.6%
9/4/2025 23.3% 37.0% 61.0%
6/5/2025 -12.9% -13.9% -6.2%
3/11/2025 -2.4% 0.2% -17.5%
12/12/2024 15.4% 14.6% 14.0%
9/4/2024 -0.8% -4.6% 19.3%
6/6/2024 0.7% 1.1% -0.3%
3/7/2024 -14.7% -16.8% -23.2%
12/7/2023 1.2% -3.1% 3.6%
8/31/2023 15.8% 11.5% 9.5%
6/6/2023 -10.8% -12.5% -10.8%
3/6/2023 3.7% 0.9% 6.5%
12/8/2022 20.0% 17.4% 20.1%
9/1/2022 -10.4% -13.5% -20.3%
6/2/2022 -1.3% -5.6% -11.1%
3/7/2022 -10.9% -16.6% -6.4%
12/9/2021 15.6% 19.8% 17.4%
9/2/2021 2.9% -2.4% -8.2%
6/3/2021 7.3% 10.4% 6.2%
SUMMARY STATS      
# Positive 11 9 11
# Negative 9 11 9
Median Positive 9.2% 11.5% 14.0%
Median Negative -10.8% -8.1% -10.8%
Max Positive 23.3% 37.0% 61.0%
Max Negative -14.7% -16.8% -23.2%

Correlation Between 1D, 5D and 21D Historical Returns

A relatively less risky strategy (though not useful if the correlation is low) is to understand the correlation between short-term and medium-term returns post earnings, find a pair that has the highest correlation, and execute the appropriate trade. For example, if 1D and 5D show the highest correlation, a trader can position themselves “long” for the next 5 days if the 1D post-earnings return is positive. Here is some correlation data based on a 5-year and a 3-year (more recent) history. Note that the correlation 1D_5D refers to the correlation between 1D post-earnings returns and subsequent 5D returns.

History 1D_5D 1D_21D 5D_21D
5Y History 7.5% 2.2% 12.4%
3Y History 4.4% -0.6% 20.6%

Is There Any Correlation With Peer Earnings?

Sometimes, peer performance can have an influence on post-earnings stock reaction. In fact, the pricing-in might begin before the earnings are announced. Here is some historical data on the past post-earnings performance of Ciena stock compared with the stock performance of peers that reported earnings just before Ciena. For fair comparison, peer stock returns also represent post-earnings one-day (1D) returns.

  1D Return Peer Post-Earnings 1D Return
CIEN Earnings Dates CIEN CSCO ANET LITE
3/5/2026 -12.9% -6.5% 3.2% N/A*
12/11/2025 9.2% 7.2% N/A* N/A*
9/4/2025 23.3% -3.4% N/A* 18.6%
6/5/2025 -12.9% 5.4% N/A* N/A*
3/11/2025 -2.4% -3.0% -28.8% N/A*
12/12/2024 15.4% -0.6% N/A* N/A*
9/4/2024 -0.8% 9.4% N/A* 21.7%
6/6/2024 0.7% -6.9% N/A* N/A*
3/7/2024 -14.7% -2.7% 2.0% 7.2%
12/7/2023 1.2% -9.4% N/A* N/A*
8/31/2023 15.8% 8.3% N/A* 17.2%
6/6/2023 -10.8% 4.6% N/A* 8.9%
3/6/2023 3.7% 2.0% 4.8% -11.9%
12/8/2022 20.0% 10.4% N/A* N/A*
9/1/2022 -10.4% -2.9% N/A* -10.5%
6/2/2022 -1.3% -5.3% N/A* -1.6%
3/7/2022 -10.9% 2.5% -6.8% N/A*
12/9/2021 15.6% 1.4% N/A* N/A*
9/2/2021 2.9% 7.9% N/A* 8.2%
CORRELATION   4.3% 38.5% 56.0%

   * N/A indicates that the peer reported earnings after CIEN

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