Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in FSI held by the largest 10 / 25 filers.
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in FSI β a direct measure of their conviction.
Filings activity in FSI during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 29 | +0.0% | 7.95% | 3.30 pp | $6M | 29% |
| Q4 2025 | 29 | +3.6% | 11.25% | 2.38 pp | $9M | 17% |
| Q3 2025 | 28 | +22% | 13.63% | +7.05 pp | $11M | +107% |
| Q2 2025 | 23 | +0.0% | 6.58% | 0.60 pp | $5M | 8.4% |
| Q1 2025 | 23 | +28% | 7.18% | +2.23 pp | $6M | +45% |
| Q4 2024 | 18 | +5.9% | 4.95% | 0.04 pp | $4M | 0.7% |
| Q3 2024 | 17 | +6.3% | 4.99% | +2.74 pp | $4M | +122% |
| Q2 2024 | 16 | β | 2.25% | β | $2M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying FSI stock.
Based on Q1 2026 13F filings, institutional ownership of Flexible Solutions International, Inc. stands at 8.0%, held across 29 reporting institutions.
RENAISSANCE TECHNOLOGIES LLC is the largest reported institutional holder of FSI, with approximately 340,945 shares worth $0.00B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of FSI, including RENAISSANCE TECHNOLOGIES LLC, CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for FSI is 51 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
8 institutions opened new positions in FSI during Q1 2026, while 8 fully exited. 1 added to existing positions and 20 trimmed.
FSI institutional ownership fell by 3.30 percentage points quarter-over-quarter, with a net change of +0 holders.
The top 10 institutions account for 87.3% of all reported 13F value in FSI, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Flexible Solutions International, Inc. (FSI) Institutional Ownership