Flexible Solutions International Inc (FSI) Institutional Ownership

Ownership Summary

Flexible Solutions International Inc (NYSE:FSI) is held by 30 institutional investors per 13F filings through December 2025.

• Their combined ownership stood at 10.8% of outstanding shares in December 2025, up from 8.4% in September 2025.
• Their total shares held in FSI increased 30.89% quarter over quarter, and separately, investors owning Flexible Solutions International increased 76.47% from a year ago.
• During the quarter, 15 of these 30 funds increased positions in FSI, 3 reduced exposure, and 12 held steady.
• 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 leads ownership in FSI with 340.94K shares as of December 31, 2025, equal to 2.52% of outstanding shares.
• Leading buyers of Flexible Solutions International shares for the quarter ending December 2025 were 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 sales of FSI for the quarter ending December 2025 came from Rothschild Wealth LLC (89.5K), O'SHAUGHNESSY ASSET MANAGEMENT, LLC (38.04K), RITHOLTZ WEALTH MANAGEMENT (28.0K).
• According to Business Quant data, leading holders of FSI for December 2025 are 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).