Flexible Solutions International Inc (FSI) Institutional Ownership

Institutions by Trading Activity

13,524,716Shares Outstanding

1,459,484Shares held by institutions

$8,946,637Value of institutional holdings

10.79%Institutional ownership %

30.89%Shares Changed QoQ

30No. of institutional investors

Flexible Solutions International Inc (NYSE:FSI) showed up in the 13F filings of 30 institutional investors as of December 2025.

Their combined ownership stood at 10.8% of outstanding shares in December 2025, up from 8.4% in September 2025.
They increased total shares held in Flexible Solutions International by 30.89% from the prior quarter, while the number of investors in FSI increased 76.47% year over year.
Of these 30 holders, 15 added to their stakes in Flexible Solutions International, 3 trimmed positions, and 12 made no changes.
Altogether, these fund groups held 1.46Mn shares in FSI by December 2025, up by 344.48K shares quarter on quarter, and up 377.8K shares year over year.
North Star Investment Management Corp. is the top holder of Flexible Solutions International as of December 31, 2025, with 90.0K shares representing 0.67% of outstanding stock.
The biggest buyers of Flexible Solutions International for the quarter ending December 2025 included North Star Investment Management Corp. (90.0K), Founders Capital Management (1.0K).
The largest sales of FSI for the quarter ending December 2025 came from RITHOLTZ WEALTH MANAGEMENT (28.0K).
According to Business Quant data, leading holders of FSI for December 2025 are North Star Investment Management Corp. (90.0K), JAMES INVESTMENT RESEARCH, INC. (18.3K), RITHOLTZ WEALTH MANAGEMENT (13.88K), Founders Capital Management (6.0K).

1,459,484 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	333,194	-17,051	-4.87%	$2,240,730.00
VANGUARD GROUP INC	31 Dec, 2025	284,869	0	0.00%	$1,915,744.00
PERRITT CAPITAL MANAGEMENT INC	31 Dec, 2025	108,200	600	0.56%	$727,645.00
Rothschild Wealth LLC	31 Dec, 2025	108,200	108,200	0.00%	$727,645.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	86,830	6,349	7.89%	$583,933.00
Beartown Capital Management, LLC	31 Dec, 2025	74,754	74,754	0.00%	$502,721.00
Informed Momentum Co LLC	31 Dec, 2025	69,175	0	0.00%	$465,202.00
MARSHALL WACE, LLP	31 Dec, 2025	59,696	7,679	14.76%	$401,155.00
O'SHAUGHNESSY ASSET MANAGEMENT, LLC	31 Dec, 2025	59,524	38,213	179.31%	$400,299.00
Sei Investments Co	31 Dec, 2025	42,024	42,024	0.00%	$282,611.00
RITHOLTZ WEALTH MANAGEMENT	31 Dec, 2025	41,882	30,573	270.34%	$281,657.00
Regal Investment Advisors LLC	31 Dec, 2025	34,960	6,500	22.84%	$235,107.00
CITADEL ADVISORS LLC	31 Dec, 2025	34,825	34,825	0.00%	$234,198.00
ESSEX INVESTMENT MANAGEMENT CO LLC	31 Dec, 2025	26,252	0	0.00%	$176,545.00
JAMES INVESTMENT RESEARCH, INC.	31 Dec, 2025	18,300	0	0.00%	$123,068.00
NewEdge Advisors, LLC	31 Dec, 2025	18,300	-15	-0.08%	$123,068.00
BlackRock, Inc.	31 Dec, 2025	18,194	-2,284	-11.15%	$122,355.00
Strait & Sound Wealth Management LLC	31 Dec, 2025	11,728	1,600	15.80%	$78,871.00
XTX Topco Ltd	31 Dec, 2025	11,611	11,611	0.00%	$78,084.00
Covestor Ltd	31 Dec, 2025	6,162	0	0.00%	$41.00

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