Flexible Solutions International FSI Institutional Ownership

NYSE FSI

$6.36 +0.05 (+0.87%)

As of: Oct 22, 2026 · 9:39 AM EDT

As of the 13F quarter ended Jun 30, 2026, 31 institutions held 9.07% of Flexible Solutions International (FSI) shares outstanding. Versus the prior quarter, institutional ownership was down 0.27 percentage points, the holder count rose by 1 and shares held were down 2.69%. The largest holder is RENAISSANCE TECHNOLOGIES LLC with 329.75K shares (2.58% of outstanding).

Updated Oct 10, 2026 Flexible Solutions International (FSI) stock price and overview

Institutions by Trading Activity

31 Institutions

Increased 11 35.5%

Unchanged 12 38.7%

Reduced 8 25.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

9.07%

▼-0.27 pp QoQ

Shares Held by Institutions

1.16Mn

of 12.77Mn outstanding

▼-2.69% QoQ

Shares Outstanding

12.77Mn

11.61Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+1 vs prior quarter

Net Shares Added (QoQ)

-32.09K

distributed since last quarter

Value of Holdings

$7.32Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 10, 2026

Flexible Solutions International Inc (NYSE:FSI) appeared in the 13F filings of 31 institutional investors for the quarter ended June 30, 2026.

These investors held 9.07% of outstanding shares in Q2 2026, down from 9.35% the quarter before.
Total shares held in Flexible Solutions International fell 2.69% versus Q1 2026, while the number of holders rose 40.91% versus Q2 2025.
Looking at the 31 holders of FSI individually, 11 added to their positions, 8 reduced their stakes and 12 left their positions unchanged.
Altogether, institutional holders owned 1.16Mn FSI shares at the end of Q2 2026, down 32.09K from the prior quarter and up 86.67K from a year earlier.
As of June 30, 2026, Renaissance Technologies LLC held the largest stake in Flexible Solutions International with 329.75K shares, or 2.58% of shares outstanding.
Holders that added the most shares of Flexible Solutions International in Q2 2026 were Rothschild Wealth LLC (+11.6K shares), BlackRock, Inc. (+5.46K shares), Citadel Advisors LLC (+4.28K shares), Vanguard Capital Management LLC (+3.96K shares) and Dimensional Fund Advisors LP (+3.84K shares).
Holders that trimmed the most shares of Flexible Solutions International in Q2 2026 while keeping a position were Renaissance Technologies LLC (-11.19K shares), Crestwood Advisors Group, LLC (-9.89K shares), Quantinno Capital Management LP (-9.89K shares), XTX Topco Ltd (-1.94K shares) and Tower Research Capital LLC (-763 shares).
Per Business Quant data, the 10 largest holders of Flexible Solutions International at the end of Q2 2026 were Renaissance Technologies LLC (329.75K shares), Vanguard Capital Management LLC (282.12K shares), Dimensional Fund Advisors LP (96.12K shares), North Star Investment Management Corp. (90K shares), Beartown Capital Management, LLC (74.75K shares), Regal Investment Advisors LLC (43.19K shares), Citadel Advisors LLC (41.51K shares), Rothschild Wealth LLC (30.3K shares), Essex Investment Management Co LLC (26.18K shares) and BlackRock, Inc. (25.24K shares).

Form 13F Holdings

31 Institutional Holders

Report period 30 Jun, 2026

Total shares held 1.16Mn

Of outstanding 9.07%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	RENAISSANCE TECHNOLOGIES LLC	0001037389	329,751	2.58%	▼11,194	-3.28%	$2.20Mn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	282,117	2.21%	▲3,962	+1.42%	$1.88Mn
3	DIMENSIONAL FUND ADVISORS LP	0000354204	96,116	0.75%	▲3,836	+4.16%	$640.13K
4	North Star Investment Management Corp.	0001342857	90,000	0.70%	0	0.00%	$599.40K
5	Beartown Capital Management, LLC	0001877162	74,754	0.59%	0	0.00%	$497.86K
6	Regal Investment Advisors LLC	0001559789	43,185	0.34%	0	0.00%	$287.61K
7	CITADEL ADVISORS LLC	0001423053	41,514	0.33%	▲4,277	+11.49%	$276.48K
8	Rothschild Wealth LLC	0001811345	30,300	0.24%	▲11,600	+62.03%	$201.80K
9	ESSEX INVESTMENT MANAGEMENT CO LLC	0000201772	26,180	0.21%	▼72	-0.27%	$174.36K
10	BlackRock, Inc.	0002012383	25,244	0.20%	▲5,464	+27.62%	$168.13K
11	JAMES INVESTMENT RESEARCH, INC.	0000810384	18,300	0.14%	0	0.00%	$121.88K
11	NewEdge Advisors, LLC	0001633516	18,300	0.14%	▲18,300	0.00%	$121.88K
12	Crestwood Advisors Group, LLC	0001426853	15,292	0.12%	▼9,889	-39.27%	$101.85K
12	Quantinno Capital Management LP	0001759654	15,292	0.12%	▼9,889	-39.27%	$101.85K
13	Strait & Sound Wealth Management LLC	0001966210	14,228	0.11%	0	0.00%	$94.76K
14	XTX Topco Ltd	0001828301	11,225	0.09%	▼1,935	-14.70%	$74.76K
15	VANGUARD FIDUCIARY TRUST CO	0000933478	6,714	0.05%	0	0.00%	$44.72K
16	Covestor Ltd	0001909846	6,162	0.05%	0	0.00%	$41
17	Founders Capital Management	0001704300	6,000	0.05%	0	0.00%	$39.96K
18	Federation des caisses Desjardins du Quebec	0002022297	2,525	0.02%	0	0.00%	$16.24K

Showing 1 to 20 of 31 holders