RELL · Richardson Electronics, Ltd.

$17.21 -0.30 (-1.71%) At close · Aug 21

Market Cap

$252.86M

14.69M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 114

Total Value: $198,684,779

Total Shares: 10,451,596

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 114 13F filers · Δ vs Mar 31, 2026

Top Holder

13.6%

−2.3 pts

Top 5

46.7%

−7.2 pts

Top 10

65.4%

−7.1 pts

HHI

586

Broadly held−147

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +14

Institutional value: +102.7%

Shares held: +16.8%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	+270,379	395,250
Large ACADIAN ASSET MANAGEMENT LLC	+164,495	386,783
Mega BlackRock, Inc.	+115,024	992,836
Large PANAGORA ASSET MANAGEMENT INC	+85,111	96,040
Mega UBS Group AG	+50,363	59,795

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small PARTHENON LLC	−36,000	98,316
Large RENAISSANCE TECHNOLOGIES LLC	−30,300	313,177
Small FIRST WILSHIRE SECURITIES MANAGEMENT INC	−29,642	642,356
Large LOS ANGELES CAPITAL MANAGEMENT LLC	−28,436	56,488
Mid DDD Partners, LLC	−22,490	1,110,602

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid AIGH Capital Management LLC	200,434	$3,810,249
Large First Eagle Investment Management, LLC	145,000	$2,756,450
Mid Informed Momentum Co LLC	63,433	$1,205,861
Mega D. E. Shaw & Co., Inc.	54,336	$1,032,927
Large SEI INVESTMENTS CO	49,332	$937,801

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large HRT FINANCIAL LP	23,422	$256,470
Mega BANK OF AMERICA CORP /DE/	12,108	$132,582
Mid GROUP ONE TRADING LLC	10,796	$118,216
Small GLOBEFLEX CAPITAL L P	4,355	$47,687
Large CWM, LLC	949	$10,391

Filter: New 21 Increased 49 Reduced 24 Sold out 7 Unchanged 20

Showing 100 of 119

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

ROYCE & ASSOCIATES LP

$27,050,051

13.61%

1,422,938

DDD Partners, LLC

$21,112,544

10.63%

1,110,602

BlackRock, Inc.

$18,873,810

9.50%

992,836

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	68,264	$1,297,698	6.9%	Sole
BlackRock Investment Management, LLC	36,736	$698,351	3.7%	Sole
BLACKROCK ADVISORS LLC	22,626	$430,120	2.3%	Sole
BlackRock Fund Advisors	477,015	$9,068,055	48.0%	Sole
BlackRock Institutional Trust Company, N.A.	388,020	$7,376,260	39.1%	Sole
Aperio Group, LLC	175	$3,326	0.0%	Sole

DIMENSIONAL FUND ADVISORS LP

$13,455,104

6.77%

707,791

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	1,870	$35,548	0.3%	Defined
DFA Australia Ltd.	5,180	$98,471	0.7%	Defined
Dimensional Ireland Ltd	11,554	$219,641	1.6%	Defined
Held directly	689,187	$13,101,444	97.4%	Sole

FIRST WILSHIRE SECURITIES MANAGEMENT INC

$12,211,187

6.15%

642,356

VANGUARD CAPITAL MANAGEMENT LLC

$10,151,834

5.11%

534,026

ACADIAN ASSET MANAGEMENT LLC

$7,352,744

3.70%

386,783

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	386,783	$7,352,744	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$5,992,407

3.02%

315,224

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	46,584	$885,561	14.8%	Defined
Held directly	268,640	$5,106,846	85.2%	Defined

RENAISSANCE TECHNOLOGIES LLC

$5,953,494

3.00%

313,177

STATE STREET CORP

$4,837,683

2.43%

254,481

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	254,481	$4,837,683	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$4,562,400

2.30%

240,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	240,000	$4,562,400	100.0%	Other

MORGAN STANLEY

$3,980,728

2.00%

209,402

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	99	$1,881	0.0%	Defined
MORGAN STANLEY & CO. LLC	3,545	$67,390	1.7%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	498	$9,466	0.2%	Defined
MORGAN STANLEY SMITH BARNEY LLC	180,188	$3,425,373	86.0%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	25,072	$476,618	12.0%	Defined

CITADEL ADVISORS LLC

$3,833,594

1.93%

201,662

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	122,643	$2,331,443	60.8%	Defined
Held directly	79,019	$1,502,151	39.2%	Defined

AIGH Capital Management LLC

$3,810,249

1.92%

200,434

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Worth Venture Partners, LLC	49,047	$932,383	24.5%	Other
Held directly	151,387	$2,877,866	75.5%	Sole

First Eagle Investment Management, LLC

$2,756,450

1.39%

145,000

GOLDMAN SACHS GROUP INC

$2,165,029

1.09%

113,889

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	60,320	$1,146,683	53.0%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	53,569	$1,018,346	47.0%	Defined

Trexquant Investment LP

$2,116,497

1.07%

111,336

Bank of New York Mellon Corp

$1,995,099

1.00%

104,950

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	86,200	$1,638,662	82.1%	Defined
The Bank of New York Mellon	18,749	$356,418	17.9%	Defined
Held directly	1	$19	0.0%	Defined

Annis Gardner Whiting Capital Advisors, LLC

$1,901,285

0.96%

100,015

Mork Capital Management, LLC

$1,901,000

0.96%

100,000

NORTHERN TRUST CORP

$1,890,524

0.95%

99,449

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	97,500	$1,853,474	98.0%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	1,949	$37,050	2.0%	Other

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,887,693

0.95%

99,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	99,300	$1,887,693	100.0%	Other

PARTHENON LLC

$1,868,987

0.94%

98,316

PANAGORA ASSET MANAGEMENT INC

$1,825,720

0.92%

96,040

Aldebaran Capital, LLC

$1,786,350

0.90%

93,969

JANE STREET GROUP, LLC

$1,705,197

0.86%

89,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	89,700	$1,705,197	100.0%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$1,584,236

0.80%

83,337

VANGUARD FIDUCIARY TRUST CO

$1,562,945

0.79%

82,217

CITADEL ADVISORS LLC

$1,374,423

0.69%

72,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	72,300	$1,374,423	100.0%	Defined

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$1,305,492

0.66%

68,674

LAZARD ASSET MANAGEMENT LLC

$1,243,710

0.63%

65,424

Informed Momentum Co LLC

$1,205,861

0.61%

63,433

UBS Group AG

$1,136,702

0.57%

59,795

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	17,614	$334,842	29.5%	Defined
UBS AG	42,181	$801,860	70.5%	Defined

MARSHALL WACE, LLP

$1,127,235

0.57%

59,297

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	59,297	$1,127,235	100.0%	Other

LOS ANGELES CAPITAL MANAGEMENT LLC

$1,073,836

0.54%

56,488

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,063,609

0.54%

55,950

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	55,950	$1,063,609	100.0%	Other

CITADEL ADVISORS LLC

$1,037,946

0.52%

54,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	54,600	$1,037,946	100.0%	Defined

D. E. Shaw & Co., Inc.

$1,032,927

0.52%

54,336

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	54,336	$1,032,927	100.0%	Defined

JANE STREET GROUP, LLC

$1,000,382

0.50%

52,624

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	52,624	$1,000,382	100.0%	Defined

SEI INVESTMENTS CO

$937,801

0.47%

49,332

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	49,332	$937,801	100.0%	Sole

ARS Investment Partners, LLC

$699,587

0.35%

36,801

STRS OHIO

$695,766

0.35%

36,600

AMERICAN CENTURY COMPANIES INC

$694,340

0.35%

36,525

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	36,525	$694,340	100.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$673,999

0.34%

35,455

GSA CAPITAL PARTNERS LLP

$630,409

0.32%

33,162

O'SHAUGHNESSY ASSET MANAGEMENT, LLC

$572,048

0.29%

30,092

DNB Asset Management AS

$514,676

0.26%

27,074

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DNB FUND	27,074	$514,676	100.0%	Other

BNP PARIBAS ARBITRAGE, SA

$505,361

0.25%

26,584

Nuveen, LLC

$496,730

0.25%

26,130

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	9,160	$174,131	35.1%	Defined
TEACHERS ADVISORS, LLC joint	16,970	$322,599	64.9%	Defined

XTX Topco Ltd

$493,328

0.25%

25,951

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	25,951	$493,328	100.0%	Defined

Aristides Capital LLC

$490,743

0.25%

25,815

RITHOLTZ WEALTH MANAGEMENT

$480,306

0.24%

25,266

ALGERT GLOBAL LLC

$422,687

0.21%

22,235

Empowered Funds, LLC

$419,417

0.21%

22,063

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Bridgeway Capital Management, LLC	22,063	$419,417	100.0%	Other

Brendel Financial Advisors LLC

$413,410

0.21%

21,747

Invesco Ltd.

$394,457

0.20%

20,750

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	1,514	$28,781	7.3%	Defined
Invesco Trust Co joint	4,933	$93,776	23.8%	Defined
Invesco Capital Management LLC	14,303	$271,900	68.9%	Defined

SIMPLEX TRADING, LLC

$361,817

0.18%

19,033

IMC-Chicago, LLC

$342,408

0.17%

18,012

NANO CAP NEW MILLENNIUM GROWTH FUND L P

$332,675

0.17%

17,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AZG TANGIBLE ASSETS FUND LLC	17,500	$332,675	100.0%	Sole

JPMORGAN CHASE & CO

$306,097

0.15%

16,102

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	5,776	$109,801	35.9%	Defined
J.P. Morgan Investment Management Inc.	9,543	$181,412	59.3%	Defined
J.P. Morgan Securities plc	106	$2,015	0.7%	Defined
J.P. Morgan SE	677	$12,869	4.2%	Defined

ESSEX INVESTMENT MANAGEMENT CO LLC

$304,502

0.15%

16,018

AQR CAPITAL MANAGEMENT LLC

$293,018

0.15%

15,414

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	3	$57	0.0%	Other
Arax Advisory Partners	127	$2,414	0.8%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	37	$703	0.2%	Other
Stokes Family Office, LLC	768	$14,599	5.0%	Other
Held directly	14,479	$275,245	93.9%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$292,906

0.15%

15,408

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	15,408	$292,906	100.0%	Sole

RHUMBLINE ADVISERS

$277,660

0.14%

14,606

Apollon Wealth Management, LLC

$268,706

0.14%

14,135

Kovack Advisors, Inc.

$255,019

0.13%

13,415

Granite Investment Partners, LLC

$248,441

0.13%

13,069

DEUTSCHE BANK AG\

$230,021

0.12%

12,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	12,100	$230,021	100.0%	Defined

ALLIANCEBERNSTEIN L.P.

$223,177

0.11%

11,740

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	11,740	$223,177	100.0%	Defined

OCCUDO QUANTITATIVE STRATEGIES LP

$218,767

0.11%

11,508

HSBC HOLDINGS PLC

$212,151

0.11%

11,160

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
HSBC BANK PLC	11,160	$212,151	100.0%	Defined

WELLS FARGO & COMPANY/MN

$203,102

0.10%

10,684

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	10,384	$197,399	97.2%	Defined
WELLS FARGO CLEARING SERVICES, LLC	300	$5,703	2.8%	Defined

Quinn Opportunity Partners LLC

$190,100

0.10%

10,000

BANK OF MONTREAL /CAN/

$190,100

0.10%

10,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMO NESBITT BURNS INC.	10,000	$190,100	100.0%	Defined

Insight Wealth Strategies, LLC

$190,100

0.10%

10,000

ROYAL BANK OF CANADA

$185,517

0.09%

9,759

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	374	$7,109	3.8%	Defined
RBC Capital Markets, LLC	9,385	$178,408	96.2%	Defined

Russell Investments Group, Ltd.

$135,939

0.07%

7,151

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	7,151	$135,939	100.0%	Defined

MetLife Investment Management, LLC

$135,047

0.07%

7,104

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	7,104	$135,047	100.0%	Defined

Founders Capital Management

$123,565

0.06%

6,500

CITIGROUP INC

$110,238

0.06%

5,799

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	5,799	$110,238	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$108,547

0.05%

5,710

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	5,710	$108,547	100.0%	Defined

Police & Firemen's Retirement System of New Jersey

$95,335

0.05%

5,015

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	5,015	$95,335	100.0%	Defined

Potomac Capital Management, Inc.

$95,050

0.05%

5,000

Covestor Ltd

$81,324

0.04%

4,278

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Darlington Capital Management	4,275	$81,267	99.9%	Other
Held directly	3	$57	0.1%	Sole

Vanguard Global Advisers, LLC

$72,713

0.04%

3,825

JONES FINANCIAL COMPANIES LLLP

$48,000

0.02%

2,525

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	2,525	$48,000	100.0%	Sole

NEW YORK STATE COMMON RETIREMENT FUND

$39,959

0.02%

2,102

BARCLAYS PLC

$37,296

0.02%

1,962

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	1,663	$31,613	84.8%	Defined
BARCLAYS CAPITAL INC.	299	$5,683	15.2%	Defined

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$35,301

0.02%

1,857

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	1,857	$35,301	100.0%	Defined

FMR LLC

$30,909

0.02%

1,626

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	1,465	$27,849	90.1%	Defined
STRATEGIC ADVISERS LLC	161	$3,060	9.9%	Defined

Tower Research Capital LLC (TRC)

$21,044

0.01%

1,107

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,107	$21,044	100.0%	Defined

Legal & General Group Plc

$20,949

0.01%

1,102

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	1,102	$20,949	100.0%	Defined

NISA INVESTMENT ADVISORS, LLC

$19,808

0.01%

1,042

Ameritas Investment Partners, Inc.

$18,781

0.01%

988

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	988	$18,781	100.0%	Other

PIN OAK INVESTMENT ADVISORS INC

$12,660

0.01%

666

High Note Wealth, LLC

$10,455

0.01%

550

OSAIC HOLDINGS, INC.

$9,505

0.00%

500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC INSTITUTIONS, INC.	500	$9,505	100.0%	Defined

Arax Advisory Partners

$8,915

0.00%

469

Sterling Capital Management LLC

$4,752

0.00%

250

Integrated Wealth Concepts LLC

$3,478

0.00%

183

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	31	$589	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMSS Wesson Wealth Solutions, LLC	2	$38	28.6%	Sole
Held directly	5	$95	71.4%	Sole

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Optiver VOF	2	$38	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	12,108	$132,582	100.0%	Defined

Key facts CIK 355948 CUSIP 763165107 13F (30d) 109 filings 107 filers Visit website