FSI Flexible Solutions International, Inc.
Flexible Solutions International, Inc. (FSI) Institutional Ownership
What the institutions did with FSI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeOwnership map
Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 329.8K | 28.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 282.1K | 24.4% |
| DIMENSIONAL FUND ADVISORS LP | 96.1K | 8.3% |
| North Star Investment Management Corp. | 90.0K | 7.8% |
| Beartown Capital Management, LLC | 74.8K | 6.5% |
| Regal Investment Advisors LLC | 43.2K | 3.7% |
| CITADEL ADVISORS LLC | 41.5K | 3.6% |
| Rothschild Wealth LLC | 30.3K | 2.6% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 26.2K | 2.3% |
| BlackRock, Inc. | 25.2K | 2.2% |
| JAMES INVESTMENT RESEARCH, INC. | 18.3K | 1.6% |
| NewEdge Advisors, LLC | 18.3K | 1.6% |
| Crestwood Advisors Group, LLC | 15.3K | 1.3% |
| Quantinno Capital Management LP | 15.3K | 1.3% |
| Strait & Sound Wealth Management LLC | 14.2K | 1.2% |
| XTX Topco Ltd | 11.2K | 1.0% |
| VANGUARD FIDUCIARY TRUST CO | 6.7K | 0.6% |
| Covestor Ltd | 6.2K | 0.5% |
| Founders Capital Management | 6.0K | 0.5% |
| Federation des caisses Desjardins du Quebec | 2.5K | 0.2% |
| MORGAN STANLEY | 1.3K | 0.1% |
| WELLS FARGO & COMPANY/MN | 1.2K | 0.1% |
| JPMORGAN CHASE & CO | 795 | 0.1% |
| 1 NORTH WEALTH SERVICES LLC | 700 | 0.1% |
| OSAIC HOLDINGS, INC. | 400 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | Sold Out | 21.5K | 0 | -21.5K |
| RITHOLTZ WEALTH MANAGEMENT | Sold Out | 13.9K | 0 | -13.9K |
| Rothschild Wealth LLC | Increased | 18.7K | 30.3K | +11.6K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 340.9K | 329.8K | -11.2K |
| TWO SIGMA INVESTMENTS, LP | Sold Out | 11.1K | 0 | -11.1K |
| Crestwood Advisors Group, LLC | Reduced | 25.2K | 15.3K | -9.9K |
| Quantinno Capital Management LP | Reduced | 25.2K | 15.3K | -9.9K |
| BlackRock, Inc. | Increased | 19.8K | 25.2K | +5.5K |
| CITADEL ADVISORS LLC | Increased | 37.2K | 41.5K | +4.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 278.2K | 282.1K | +4.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 92.3K | 96.1K | +3.8K |
| XTX Topco Ltd | Reduced | 13.2K | 11.2K | -1.9K |
| NewEdge Advisors, LLC | Reduced | 19.4K | 18.3K | -1.1K |
| Tower Research Capital LLC (TRC) | Reduced | 803 | 40 | -763 |
| MORGAN STANLEY | Reduced | 1.5K | 1.3K | -156 |
| Blue Trust, Inc. | New | 0 | 100 | +100 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Reduced | 26.3K | 26.2K | -72 |
| UBS Group AG | New | 0 | 71 | +71 |
| JPMORGAN CHASE & CO | Increased | 779 | 795 | +16 |
| ROYAL BANK OF CANADA | New | 0 | 10 | +10 |
| SBI Securities Co., Ltd. | Reduced | 13 | 12 | -1 |
| CITIGROUP INC | Sold Out | 1 | 0 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.