FSI · Flexible Solutions International Inc · Shareholders & Ownership
Market Cap
$80.59M
Shares
12.77M
Volume · Oct 20
14.21K
Avg daily vol (3M)
18.5K
Every disclosed holder of FSI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns FSI
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 1,152,725 | 9.03% |
| Insiders (Forms 3, 4, 5) | 4,605,156 | 36.06% |
| 13D/G-only blocks | 1,258,521 | 9.85% |
| Remaining | 5,756,096 | 45.07% |
| Registered funds (N-PORT, not summed) | 465,793 | 3.65% |
Shares outstanding: 12,772,498, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of FSI
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
O BRIEN DANIEL B
Insider
CIK 1112317 · Feb 3, 2026
Director, Chief Executive Officer, 10% Owner, issuer-wide
|
4,595,156 | ||
| 1.1 |
|
4,595,156 | ||
| 2 |
Comprehensive Financial Planning, Inc.
13G
CIK 1287075 · Investment adviser · Dec 31, 2024
Rule 13d-1(b), qualified institution
|
1,258,521 | ||
| 3 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
329,751 | ||
| 4 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
282,117 | ||
| 5 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
270,455 | ||
| 6 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
96,116 | ||
| 6.1 |
U.S. Targeted Value Portfolio
Fund
S000000970 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
25,410 | ||
| 6.2 |
Dimensional U.S. Targeted Value ETF
Fund
S000070901 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
15,292 | ||
| 6.3 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
6,450 | ||
| 6.4 |
Dimensional US Sustainability Core 1 ETF
Fund
S000076639 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
3,528 | ||
| 6.5 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
3,460 | ||
| 7 |
North Star Investment Management Corp.
13F
CIK 1342857 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
90,000 | ||
| 8 |
North Star Micro Cap Fund
Fund
S000040440 · Registered fund · May 31, 2026
NORTHERN LIGHTS FUND TRUST II, not summed
|
90,000 | ||
| 9 |
Beartown Capital Management, LLC
13F
CIK 1877162 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
74,754 | ||
| 10 |
Regal Investment Advisors LLC
13F
CIK 1559789 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
43,185 | ||
| 11 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
41,514 | ||
| 12 |
Rothschild Wealth LLC
13F
CIK 1811345 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
30,300 | ||
| 13 |
ESSEX INVESTMENT MANAGEMENT CO LLC
13F
CIK 201772 · Registered investment adviser · Sep 30, 2026
|
26,180 | ||
| 14 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
25,244 | ||
| 14.1 |
iShares Micro-Cap ETF
Fund
S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
23,632 | ||
| 15 |
JAMES INVESTMENT RESEARCH, INC.
13F
CIK 810384 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
18,300 | ||
| 16 |
NewEdge Advisors, LLC
13F
CIK 1633516 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
18,300 | ||
| 17 |
Crestwood Advisors Group, LLC
13F
CIK 1426853 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15,292 | ||
| 18 |
Quantinno Capital Management LP
13F
CIK 1759654 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15,292 | ||
| 19 |
Strait & Sound Wealth Management LLC
13F
CIK 1966210 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
14,228 | ||
| 20 |
XTX Topco Ltd
13F
CIK 1828301 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11,225 | ||
| 21 |
|
10,000 | ||
| 22 |
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND
Fund
S000002855 · Registered fund · Jun 30, 2026
VANGUARD INSTITUTIONAL INDEX FUNDS, not summed
|
7,924 | ||
| 23 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,714 | ||
| 24 |
|
6,162 | ||
| 25 |
VANGUARD BALANCED INDEX FUND
Fund
S000002560 · Registered fund · Jun 30, 2026
VANGUARD VALLEY FORGE FUNDS, not summed
|
3,738 | ||
| 26 |
Federation des caisses Desjardins du Quebec
13F
CIK 2022297 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,525 | ||
| 27 |
1290 VT Micro Cap Portfolio
Fund
S000044688 · Registered fund · Jun 30, 2026
EQ Advisors Trust, not summed
|
1,612 | ||
| 28 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,344 | ||
| 29 |
WELLS FARGO & COMPANY/MN
13F
CIK 72971 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,245 | ||
| 30 |
Fortitude Family Office, LLC
13F
CIK 1950506 · Registered investment adviser · Sep 30, 2026
|
909 | ||
| 31 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
795 | ||
| 32 |
1 NORTH WEALTH SERVICES LLC
13F
CIK 1641761 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
700 | ||
| 33 |
OSAIC HOLDINGS, INC.
13F
CIK 1677044 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
400 | ||
| 34 |
|
71 | ||
| 35 |
Tower Research Capital LLC (TRC)
13F
CIK 1533421 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
40 | ||
| 36 |
SBI Securities Co., Ltd.
13F
CIK 1851815 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
12 | ||
| 37 |
ROYAL BANK OF CANADA
13F
CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
10 |
8 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.