Flexible Solutions International

FSI • AMEX

Flexible Solutions International is a chemicals - specialty company in the basic materials sector on AMEX, led by Daniel B. O'Brien, with a market cap of $90.6M. As of Q3 2025, 9% of shares are held by 27 institutional investors, with RENAISSANCE TECHNOLOGIES LLC as the largest holder at 2.77%.

CEODaniel B. O'Brien

Market Cap$90.6M

Chemicals - Specialty

Basic Materials

Employees46.0

Websiteflexiblesolutions.com

Country

United States of America

Overview

Overview of institutional ownership in FSI as of Q3 2025 with a market cap of $122.0M

All Institutions

Institutions: 27
Value Held: $11.0M
Shares Held: 1.1M
Avg Position: $408.0K
Median Position: $126.1K

Hedge Funds

Hedge Funds: 2
Value Held: $3.5M
Shares Held: 363.3K
Avg Position: $1.8M
Median Position: $1.8M

Ownership Breakdown

Institutional (non-HF)

6.16%

$7.5M

Hedge Funds

2.87%

$3.5M

Retail & Other

90.97%

$111.0M

Based on market cap of $122.0M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in FSI as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	Peter Fitzhugh Brown CEO	$3.4M 0.00% of portfolio	2.77% 350.2K shares	Q2 2015 Held for 10y 5m	$75.8B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$2.7M 0.00% of portfolio	2.25% 284.9K shares	Q3 2019 Held for 6y 2m	$6.69T
PERRITT CAPITAL MANAGEMENT INC Long Only Manager	Mark J Buh President	$1.0M 0.49% of portfolio	0.85% 107.6K shares	Q3 2021 Held for 4y 2m	$211.0M
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$775.8K 0.00% of portfolio	0.64% 80.5K shares	Q3 2016 Held for 9y 2m	$466.32B
EAM Investors, LLC Long Only Manager	Derek John Gaertner CEO	$666.8K 0.08% of portfolio	0.55% 69.2K shares	Q3 2025 Held for 2 months	$873.4M
Marshall Wace LLP Institution	Diana Lj Harrison President	$501.4K 0.00% of portfolio	0.41% 52.0K shares	Q3 2025 Held for 2 months	$90.3B
Regal Investment Advisors, LLC RIA/Wealth	John Anthony Kailunas CEO	$274.4K 0.02% of portfolio	0.22% 28.5K shares	Q3 2019 Held for 6y 2m	$1.5B
ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager	Nancy Beth Prial CEO	$253.1K 0.04% of portfolio	0.21% 26.3K shares	Q1 2025 Held for 8 months	$652.5M
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Long Only Manager	Patrick Walker O'Shaughnessy Chairman	$205.4K 0.00% of portfolio	0.17% 21.3K shares	Q3 2025 Held for 2 months	$17.0B
B BlackRock, Inc. Institution	-	$197.4K 0.00% of portfolio	0.16% 20.5K shares	Q2 2025 Held for 5 months	$5.67T

Net Capital Flow

Institutional buying and selling activity for FSI in Q3 2025

Traded: +$906.8K
Buyers: 12
Sellers: 10
Total Bought: +$1.8M
Total Sold: −$874.4K
Avg Position: $333.8K

Biggest Buyers

Institution	Net Bought	Current Position
EAM Investors, LLC Long Only Manager	+$666.8K +69.2K shares	$666.8K 69.2K shares
Marshall Wace LLP Institution	+$501.4K +52.0K shares	$501.4K 52.0K shares
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Long Only Manager	+$205.4K +21.3K shares	$205.4K 21.3K shares
J JANE STREET GROUP, LLC Institution	+$128.8K +13.4K shares	$128.8K 13.4K shares
Comprehensive Portfolio Management, LLC RIA/Wealth	+$109.0K +11.3K shares	$109.0K 11.3K shares
VANGUARD GROUP INC Institution	+$74.2K +7.7K shares	$2.7M 284.9K shares
B BlackRock, Inc. Institution	+$41.5K +4.3K shares	$197.4K 20.5K shares
Federation des caisses Desjardins du Quebec Fund of Funds	+$24.0K +2.5K shares	$24.0K 2.5K shares
DIMENSIONAL FUND ADVISORS LP Long Only Manager	+$16.4K +1.7K shares	$775.8K 80.5K shares
BARCLAYS PLC Institution	+$13.3K +1.4K shares	$13.3K 1.4K shares

Biggest Sellers

Institution	Net Sold	Current Position
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	−$348.9K −36.2K shares	$3.4M 350.2K shares
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager	−$309.9K −63.9K shares	Sold Off 0 shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$119.3K −24.6K shares	Sold Off 0 shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	−$35.1K −3.6K shares	$126.1K 13.1K shares
PERRITT CAPITAL MANAGEMENT INC Long Only Manager	−$23.1K −2.4K shares	$1.0M 107.6K shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	−$22.1K −4.6K shares	Sold Off 0 shares
N NATIONAL BANK OF CANADA /FI/ Institution	−$14.4K −3.0K shares	Sold Off 0 shares
S SBI Securities Co., Ltd. Institution	−$860.3 −89.0 shares	$116.0 12.0 shares
A Advisor Group Holdings, Inc. Institution	−$482.0 −50.0 shares	$3.9K 400.0 shares
JPMORGAN CHASE & CO Institution	−$87.0 −18.0 shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited FSI in Q3 2025

New Positions: 6
New Value: $1.5M
Exited Positions: 5
Exited Value: $465.9K

New Positions

Institution	Position Value
EAM Investors, LLC Long Only Manager	$666.8K 69.2K shares
Marshall Wace LLP Institution	$501.4K 52.0K shares
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Long Only Manager	$205.4K 21.3K shares
Comprehensive Portfolio Management, LLC RIA/Wealth	$109.0K 11.3K shares
Federation des caisses Desjardins du Quebec Fund of Funds	$24.0K 2.5K shares
BARCLAYS PLC Institution	$13.3K 1.4K shares

Exited Positions

Institution	Previous Position
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager	$309.9K 63.9K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$119.3K 24.6K shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	$22.1K 4.6K shares
N NATIONAL BANK OF CANADA /FI/ Institution	$14.4K 3.0K shares
JPMORGAN CHASE & CO Institution	$87.0 18.0 shares

Options Activity

Institutions with the largest Call and Put options positions in FSI as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with FSI as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
PERRITT CAPITAL MANAGEMENT INC Long Only Manager	Mark J Buh President	0.49% $1.0M	0.85% 107.6K shares	Q3 2021 Held for 4y 2m	$211.0M
EAM Investors, LLC Long Only Manager	Derek John Gaertner CEO	0.08% $666.8K	0.55% 69.2K shares	Q3 2025 Held for 2 months	$873.4M
ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager	Nancy Beth Prial CEO	0.04% $253.1K	0.21% 26.3K shares	Q1 2025 Held for 8 months	$652.5M
Strait & Sound Wealth Management LLC RIA/Wealth	Todd Alan Sixt CEO	0.04% $97.6K	0.08% 10.1K shares	Q2 2025 Held for 5 months	$260.6M
C Covestor Ltd Institution	-	0.03% $59.4K	0.05% 6.2K shares	Q1 2025 Held for 8 months	$179.7M
Founders Capital Management RIA/Wealth	James Lincoln Walter President	0.03% $48.2K	0.04% 5.0K shares	Q3 2024 Held for 1y 2m	$188.8M
JAMES INVESTMENT RESEARCH INC Long Only Manager	Richard Brian Culpepper CEO	0.02% $176.4K	0.14% 18.3K shares	Q4 2022 Held for 2y 11m	$912.7M
Regal Investment Advisors, LLC RIA/Wealth	John Anthony Kailunas CEO	0.02% $274.4K	0.22% 28.5K shares	Q3 2019 Held for 6y 2m	$1.5B
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	Peter Fitzhugh Brown CEO	0.00% $3.4M	2.77% 350.2K shares	Q2 2015 Held for 10y 5m	$75.8B
1 NORTH WEALTH SERVICES LLC RIA/Wealth	James Edward Brennan CCO	0.00% $6.7K	0.01% 700.0 shares	Q1 2025 Held for 8 months	$244.1M

Hedge Fund Spotlight

Discover hedge funds investing in FSI

RENAISSANCE TECHNOLOGIES LLC

Hedge Fund • Quant

Portfolio ManagerPeter Fitzhugh Brown

Portfolio Value: $75.8B
Positions: 3,419
Last Reported: Q3 2025

Sector Allocation

Position in Flexible Solutions International

Market Value: $3.4M
Shares Held: 350.2K
Portfolio Weight: 0.00%
Owned Since: 2015-Q2

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