Flexible Solutions International Inc
Ownership
Ownership Structure
Who owns Flexible Solutions International Inc (FSI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 63.6% of the shares are freely tradable; institutional investors hold 10.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Renaissance Technologies Corp | 2.67 | 340,945 | +2.3 | 03/31/2026 |
| Vanguard Capital Management, LLC | 2.18 | 278,155 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 0.75 | 96,116 | +4.2 | 06/30/2026 |
| North Star Investment Management Corp | 0.70 | 90,000 | +0.0 | 06/30/2026 |
| Beartown Capital Management, LLC | 0.59 | 74,754 | +0.0 | 06/30/2026 |
| Regal Investment Advisors LLC | 0.34 | 43,185 | +23.5 | 03/31/2026 |
| Citadel Advisors Llc | 0.33 | 41,514 | +11.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.12 | 270,455 | +0.0 | 07/31/2026 |
| Perritt MicroCap Opportunities Investor | 0.70 | 90,000 | +0.0 | 12/31/2025 |
| North Star Micro Cap I | 0.70 | 90,000 | +0.0 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.