# C3IS INC (CISS)

> Institutional ownership reported to the SEC as of Q1 2026, from Form 13F filings. Source: https://holderbook.com/stocks/CISS/

- Reporting holders: 3
- Reported value: $72.9K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [HRT FINANCIAL LP](https://holderbook.com/funds/1475597-hrt-financial-lp/) | $63.0K | 76,520 | 0.0% | 1 |
| [StoneX Group Inc.](https://holderbook.com/funds/913760-stonex-group-inc/) | $8.6K | 10,435 | 0.0% | 1 |
| [SUMMIT SECURITIES GROUP LLC](https://holderbook.com/funds/1531593-summit-securities-group-llc/) | $1.2K | 1,508 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2026 | 3 | $72.9K |
| Q4 2025 | 5 | $240.7K |
| Q3 2025 | 3 | $273.7K |
| Q2 2025 | 4 | $122.7K |
| Q1 2025 | 4 | $133.6K |
| Q4 2024 | 1 | $65 |
| Q1 2024 | 10 | $57.2K |
| Q4 2023 | 10 | $41.7K |
| Q3 2023 | 9 | $13.0K |
| Q2 2023 | 11 | $150.2K |