Richardson Electronics, Ltd.
US ˙ NasdaqGS ˙ US7631651079

SecurityRELL / Richardson Electronics, Ltd.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership92,168 shares
Latest Disclosed Value $ 1,009,240
Northern Trust Corp reports 7.31% increase in ownership of RELL / Richardson Electronics, Ltd.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 92,168 shares of Richardson Electronics, Ltd. (US:RELL) valued at $1,009,240 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 85,889 shares of Richardson Electronics, Ltd.. This represents a change in shares of 7.31% during the quarter. The current value of the position is $1,587,133 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F RICHARDSON ELECTRS COM 763165107 92,168 6,279 7.31 1,009 8.03 0.0000
2026-02-17 2025-12-31 13F RICHARDSON ELECTRS COM 763165107 85,889 -7,251 -7.79 934 2.52 0.0000
2025-11-14 2025-09-30 13F RICHARDSON ELECTRS COM 763165107 93,140 -2,694 -2.81 912 -1.41 0.0000
2025-08-13 2025-06-30 13F RICHARDSON ELECTRS COM 763165107 95,834 -3,919 -3.93 925 -16.98 0.0001
2025-05-13 2025-03-31 13F RICHARDSON ELECTRS COM 763165107 99,753 988 1.00 1,113 -19.64 0.0002
2025-02-14 2024-12-31 13F RICHARDSON ELECTRS COM 763165107 98,765 1,623 1.67 1,386 15.61 0.0002
2024-11-13 2024-09-30 13F RICHARDSON ELECTRS COM 763165107 97,142 1,087 1.13 1,199 4.90 0.0002
2024-08-14 2024-06-30 13F RICHARDSON ELECTRS COM 763165107 96,055 -1,052 -1.08 1,142 27.74 0.0002
2024-05-14 2024-03-31 13F RICHARDSON ELECTRS COM 763165107 97,107 -793 -0.81 894 -31.55 0.0002
2024-02-13 2023-12-31 13F RICHARDSON ELECTRS COM 763165107 97,900 3,556 3.77 1,307 26.67 0.0002
2023-11-13 2023-09-30 13F RICHARDSON ELECTRS COM 763165107 94,344 -1,054 -1.10 1,031 -34.50 0.0002
2023-08-11 2023-06-30 13F RICHARDSON ELECTRS COM 763165107 95,398 75,628 382.54 1,574 256.92 0.0003
2023-05-15 2023-03-31 13F RICHARDSON ELECTRS COM 763165107 19,770 1,338 7.26 441 12.21 0.0001
2023-02-13 2022-12-31 13F RICHARDSON ELECTRS COM 763165107 18,432 745 4.21 393 47.19 0.0001
2022-11-14 2022-09-30 13F RICHARDSON ELECTRS COM 763165107 17,687 308 1.77 267 4.71 0.0001
2022-08-12 2022-06-30 13F RICHARDSON ELECTRS COM 763165107 17,379 -277 -1.57 255 15.91 0.0001
2022-05-13 2022-03-31 13F RICHARDSON ELECTRS COM 763165107 17,656 -754 -4.10 220 -11.65 0.0000
2022-02-08 2021-12-31 13F RICHARDSON ELECTRS COM 763165107 18,410 -11,283 -38.00 249 -13.54 0.0000
2021-11-15 2021-09-30 13F RICHARDSON ELECTRS COM 763165107 29,693 -901 -2.95 288 13.39 0.0001
2021-08-13 2021-06-30 13F RICHARDSON ELECTRS COM 763165107 30,594 14 0.05 254 30.26 0.0000
2021-05-12 2021-03-31 13F RICHARDSON ELECTRS COM 763165107 30,580 -4,356 -12.47 195 18.18 0.0000
2021-02-11 2020-12-31 13F RICHARDSON ELECTRS COM 763165107 34,936 1,286 3.82 165 17.02 0.0000
2020-11-16 2020-09-30 13F RICHARDSON ELECTRS COM 763165107 33,650 -6,168 -15.49 141 -12.42 0.0000
2020-08-14 2020-06-30 13F RICHARDSON ELECTRS COM 763165107 39,818 0 0.00 161 5.92 0.0000
2020-05-14 2020-03-31 13F RICHARDSON ELECTRS COM 763165107 39,818 100 0.25 152 -32.14 0.0000
2020-02-14 2019-12-31 13F RICHARDSON ELECTRS COM 763165107 39,718 14,805 59.43 224 54.48 0.0001
2019-11-13 2019-09-30 13F RICHARDSON ELECTRS COM 763165107 24,913 -766 -2.98 145 0.69 0.0000
2019-08-13 2019-06-30 13F RICHARDSON ELECTRS COM 763165107 25,679 -851 -3.21 144 -20.00 0.0000
2019-05-13 2019-03-31 13F RICHARDSON ELECTRS COM 763165107 26,530 -9,318 -25.99 180 -42.12 0.0000
2019-02-12 2018-12-31 13F RICHARDSON ELECTRS COM 763165107 35,848 0 0.00 311 -0.96 0.0001
2018-11-14 2018-09-30 13F RICHARDSON ELECTRS COM 763165107 35,848 -564 -1.55 314 -11.55 0.0001
2018-09-18 2018-06-30 13F/A-1 RICHARDSON ELECTRS COM 763165107 36,412 -1,278 -3.39 355 18.73 0.0001
2018-08-14 2018-06-30 13F RICHARDSON ELECTRS COM 763165107 36,412 -1,278 355
2018-05-09 2018-03-31 13F RICHARDSON ELECTRS COM 763165107 37,690 8,449 28.89 299 51.78 0.0001
2018-02-14 2017-12-31 13F RICHARDSON ELECTRS COM 763165107 29,241 -1,272 -4.17 197 8.24 0.0000
2017-11-13 2017-09-30 13F RICHARDSON ELECTRS COM 763165107 30,513 -400 -1.29 182 -1.62 0.0000
2017-08-11 2017-06-30 13F RICHARDSON ELECTRS COM 763165107 30,913 0 0.00 185 -0.54 0.0001
2017-05-12 2017-03-31 13F RICHARDSON ELECTRS COM 763165107 30,913 2,308 8.07 186 3.33 0.0001
2017-02-13 2016-12-31 13F RICHARDSON ELECTRS COM 763165107 28,605 108 0.38 180 -6.74 0.0001
2016-11-09 2016-09-30 13F RICHARDSON ELECTRS COM 763165107 28,497 1,223 4.48 193 34.03 0.0001
2016-08-12 2016-06-30 13F RICHARDSON ELECTRS COM 763165107 27,274 185 0.68 144 2.86 0.0000
2016-08-19 2016-03-31 13F/A-1 RICHARDSON ELECTRS COM 763165107 27,089 -113 -0.42 140 -9.09 0.0000
2016-05-13 2016-03-31 13F RICHARDSON ELECTRS COM 763165107 27,089 140
2016-02-12 2015-12-31 13F RICHARDSON ELECTRS COM 763165107 27,202 5,152 23.37 154 18.46 0.0001
2015-11-12 2015-09-30 13F RICHARDSON ELECTRS COM 763165107 22,050 22,050 0.00 130 0.0000
2015-08-13 2015-06-30 13F RICHARDSON ELECTRS COM 763165107 0 -30,192 -100.00 0 -100.00
2015-05-14 2015-03-31 13F RICHARDSON ELECTRS COM 763165107 30,192 -1,125 -3.59 271 -13.42 0.0001
2015-02-12 2014-12-31 13F RICHARDSON ELECTRS COM 763165107 31,317 -899 -2.79 313 -2.80 0.0001
2014-11-13 2014-09-30 13F RICHARDSON ELECTRS COM 763165107 32,216 -90,645 -73.78 322 -74.96 0.0001
2014-08-14 2014-06-30 13F RICHARDSON ELECTRS COM 763165107 122,861 -26,478 -17.73 1,286 -19.98 0.0004
2014-05-14 2014-03-31 13F RICHARDSON ELECTRS COM 763165107 149,339 -12,853 -7.92 1,607 -12.81 0.0005
2014-02-21 2013-12-31 13F/A-1 RICHARDSON ELECTRS COM 763165107 162,192 -5,436 -3.24 1,843 -3.31 0.0006
2014-02-12 2013-12-31 13F RICHARDSON ELECTRS COM 763165107 162,192 1,843
2013-11-13 2013-09-30 13F RICHARDSON ELECTRS COM 763165107 167,628 -5,624 -3.25 1,906 -6.25 0.0007
2013-08-09 2013-06-30 13F RICHARDSON ELECTRS COM 763165107 173,252 173,252 2,033 0.0007
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.