Will Ciena (CIEN) be added to the S&P 500 by March 31, 2026?

Ciena is highly favored to be added to the S&P 500 by March 2026.

The prediction market shows a strong consensus with a 100% probability for Ciena's inclusion in the S&P 500 by March 31, 2026. This aligns closely with the Pulse AI probability of 97%, indicating a high level of confidence in this outcome. The market appears fairly priced with a slight edge of -3.

• 1 Current market sentiment is overwhelmingly positive for Ciena's S&P 500 inclusion.
• 2 Key factors influencing this market include Ciena's recent performance and growth prospects.
• 3 Historical base rates suggest a strong likelihood for companies meeting certain criteria to be added to the S&P 500.
• 4 Liquidity in this market appears stable, supporting the current probabilities.
• 5 Time pressure is minimal with 204 hours remaining until the expiry date.

The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for March 20, 2026.

This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No."

To qualify, the listed ticker must match the announced ticker added to the index.

An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date.

The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).