DIMENSIONAL FUND ADVISORS LP

Position in FONR — Fonar Corp

CIK 354204 AUSTIN, TX

Position in FONR

as of Mar 31, 2026 · filed May 7, 2026 Compact

Position Value

$5,855,141

-$1,073,621 QoQ

Shares Held

315,471

-15.5% QoQ

Ownership

45.3%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

of 41 holders

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 97% Shared 2% None 1%

Healthcare · as of Mar 31, 2026

DIMENSIONAL FUND ADVISORS LP holds $4,736,122,501 across 33 Diagnostics & Research names. FONR ranks #29 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	1,689,790	$830,582,476
2	DHR	Danaher Corp /De/	2,645,911	$501,664,724
3	DGX	Quest Diagnostics Inc	1,949,535	$382,069,866
4	LH	Labcorp Holdings Inc.	1,332,775	$355,597,695
5	IDXX	Idexx Laboratories Inc /De	573,332	$322,149,515
6	CRL	Charles River Laboratories International, Inc.	1,652,484	$285,053,489
7	IQV	Iqvia Holdings Inc.	1,657,696	$282,703,474
8	RVTY	Revvity, Inc.	2,917,953	$255,641,860

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$0	0	-100.0%	Shares	Sole	2026-07-14
2026-03-31	$5,855,141	315,471	-15.5%	Shares	Sole	2026-05-07
2025-12-31	$6,928,762	373,317	-1.0%	Shares	Sole	2026-02-12
2025-09-30	$5,677,257	376,976	+1.2%	Shares	Sole	2025-11-12
2025-06-30	$5,573,541	372,563	+0.2%	Shares	Sole	2025-08-12
2025-03-31	$5,208,371	371,761	-1.3%	Shares	Sole	2025-05-13
2024-12-31	$5,702,903	376,678	+0.6%	Shares	Sole	2025-02-13
2024-09-30	$6,063,623	374,529	-1.6%	Shares	Sole	2024-11-07
2024-06-30	$6,092,928	380,808	-3.8%	Shares	Sole	2024-08-09
2024-03-31	$8,456,486	395,903	+0.3%	Shares	Sole	2024-05-10
2023-12-31	$7,721,484	394,759	-0.3%	Shares	Sole	2024-02-07
2023-09-30	$6,097,165	395,920	-3.4%	Shares	Sole	2023-11-09
2023-06-30	$7,008,518	409,855	+0.4%	Shares	Sole	2023-08-09
2023-03-31	$6,610,667	408,066	+3.4%	Shares	Sole	2023-05-12
2022-12-31	$6,609,816	394,616	+1.6%	Shares	Sole	2023-02-09
2022-09-30	$5,493,354	388,223	-1.1%	Shares	Sole	2022-11-10
2022-06-30	$5,965,217	392,707	+4.3%	Shares	Sole	2022-08-12
2022-03-31	$6,983,815	376,486	+3.2%	Shares	Defined	2022-05-13
2021-12-31	$5,463,820	364,741	-1.2%	Shares	Defined	2022-02-09
2021-09-30	$5,705,064	369,021	-8.7%	Shares	Defined	2021-11-12
2021-06-30	$7,143,038	404,018	+1.2%	Shares	Defined	2021-08-12
2021-03-31	$7,221,383	399,192	-2.4%	Shares	Defined	2021-05-14
2020-12-31	$7,102,965	409,157	-0.1%	Shares	Defined	2021-03-08
2020-09-30	$8,553,993	409,674	+0.5%	Shares	Defined	2020-11-12
2020-06-30	$8,708,381	407,505	+4.0%	Shares	Defined	2020-08-13
2020-03-31	$5,727,999	391,792	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.