Flexible Solutions International Inc (FSI) Institutional Ownership

Ownership Summary

Flexible Solutions International Inc (NYSE:FSI) has 30 institutional investors with active 13F positions as of December 2025.

• Their combined ownership stood at 10.8% of outstanding shares in December 2025, up from 8.4% in September 2025.
• They increased total shares held in FSI by 30.89% quarter over quarter, and investors in Flexible Solutions International increased 76.47% from a year ago.
• Activity in FSI broke down as 15 buyers, 3 sellers, and 12 unchanged among 30 total holders.
• The aggregate institutional position in Flexible Solutions International amounted to 1.46Mn shares as of December 2025, up by 344.48K shares quarter on quarter, and up 377.8K shares year over year.
• RENAISSANCE TECHNOLOGIES LLC holds the largest position in FSI at 340.94K shares as of December 31, 2025, or 2.52% of shares outstanding.
• The most significant purchases of FSI for the quarter ending December 2025 came from VANGUARD CAPITAL MANAGEMENT LLC (278.16K), North Star Investment Management Corp. (90.0K), Crestwood Advisors Group, LLC (25.18K), Quantinno Capital Management LP (25.18K), TWO SIGMA INVESTMENTS, LP (11.1K).
• The largest sellers of Flexible Solutions International for the quarter ending December 2025 were Rothschild Wealth LLC (89.5K), O'SHAUGHNESSY ASSET MANAGEMENT, LLC (38.04K), RITHOLTZ WEALTH MANAGEMENT (28.0K).
• Business Quant data shows the 10 biggest positions in Flexible Solutions International as of December 2025 are held by RENAISSANCE TECHNOLOGIES LLC (340.94K), VANGUARD CAPITAL MANAGEMENT LLC (278.16K), DIMENSIONAL FUND ADVISORS LP (92.28K), North Star Investment Management Corp. (90.0K), Beartown Capital Management, LLC (74.75K), Regal Investment Advisors LLC (43.18K), CITADEL ADVISORS LLC (37.24K), ESSEX INVESTMENT MANAGEMENT CO LLC (26.25K), Crestwood Advisors Group, LLC (25.18K), Quantinno Capital Management LP (25.18K).