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CISS stock news · C3is

Stories about C3is (CISS) from the last 90 days, each explained in plain English with whether the news reads good or bad for the company.

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  1. Oct 14, 2026, 5:24 PM ET · Market

    12 industrial stocks changed a lot during Wednesday's after-hours trading.

    Neutral

    C3is shares rose about 13% after hours, but the article gives no company news that changes its business outlook.

  2. Aug 5, 2026, 1:39 AM ET · Market

    After-hours trading sees C3is (CISS) shares jump more than 16% following major institutional investments.

    Good for CISS

    C3is Inc. shares experienced a significant after-hours surge of over 16% following the disclosure of substantial institutional stakes by Alta Partners LLC and CVI Investments Inc. This influx of institutional investment suggests a potential turnaround for the company, which has faced a steep decline over the past year.