Applied Optoelectronics, Inc.
DE ˙ DB ˙ US03823U1025
170,76 € ↓ -2,98 (-1,72%)
2026-06-05
AKTIENPREIS
SecurityDE:A59 / Applied Optoelectronics, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership583,494 shares
Latest Disclosed Value $ 49,357,757
Northern Trust Corp reports 10.74% increase in ownership of A59 / Applied Optoelectronics, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 583,494 shares of Applied Optoelectronics, Inc. (DE:A59) valued at $42,303,315 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 526,928 shares of Applied Optoelectronics, Inc.. This represents a change in shares of 10.74% during the quarter. The current value of the position is $99,637,435 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 APPLIED OPTOELECTRONICS COM 03823U102 583,494 56,566 10.74 49,358 168.71 0.0013
2026-02-17 2025-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 526,928 19,167 3.77 18,369 39.51 0.0005
2025-11-14 2025-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 507,761 24,161 5.00 13,166 5.98 0.0017
2025-08-13 2025-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 483,600 73,532 17.93 12,424 97.38 0.0017
2025-05-13 2025-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 410,068 9,873 2.47 6,295 -57.33 0.0009
2025-02-14 2024-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 400,195 73,112 22.35 14,751 215.19 0.0021
2024-11-13 2024-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 327,083 205,664 169.38 4,681 365.21 0.0008
2024-08-14 2024-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 121,419 17,518 16.86 1,007 -30.14 0.0002
2024-05-14 2024-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 103,901 12,728 13.96 1,440 -18.23 0.0002
2024-02-13 2023-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 91,173 10,862 13.52 1,761 99.89 0.0003
2023-11-13 2023-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 80,311 4,677 6.18 881 95.78 0.0002
2023-08-11 2023-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 75,634 2,015 2.74 451 177.78 0.0001
2023-05-15 2023-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 73,619 4,154 5.98 163 23.66 0.0000
2023-02-13 2022-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 69,465 3,353 5.07 131 -27.22 0.0000
2022-11-14 2022-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 66,112 3,741 6.00 180 87.50 0.0000
2022-08-12 2022-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 62,371 365 0.59 96 -57.71 0.0000
2022-05-13 2022-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 62,006 -4,617 -6.93 227 -33.63 0.0000
2022-02-08 2021-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 66,623 -28,266 -29.79 342 -49.85 0.0001
2021-11-15 2021-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 94,889 3,617 3.96 682 -11.77 0.0001
2021-08-13 2021-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 91,272 -162,464 -64.03 773 -63.55 0.0001
2021-05-12 2021-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 253,736 -9,360 -3.56 2,121 -5.31 0.0004
2021-02-11 2020-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 263,096 -13,087 -4.74 2,240 -27.90 0.0004
2020-11-16 2020-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 276,183 18,043 6.99 3,107 10.77 0.0007
2020-08-14 2020-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 258,140 19,744 8.28 2,805 55.06 0.0007
2020-05-14 2020-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 238,396 -3,591 -1.48 1,809 -37.08 0.0005
2020-02-14 2019-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 241,987 -12,322 -4.85 2,875 0.77 0.0006
2019-11-13 2019-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 254,309 15,423 6.46 2,853 16.16 0.0007
2019-08-13 2019-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 238,886 6,482 2.79 2,456 -13.37 0.0006
2019-05-13 2019-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 232,404 4,334 1.90 2,835 -19.41 0.0007
2019-02-12 2018-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 228,070 -2,977 -1.29 3,518 -38.26 0.0010
2018-11-14 2018-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 231,047 6,373 2.84 5,698 -43.52 0.0014
2018-09-18 2018-06-30 13F/A-1 APPLIED OPTOELECTRONICS COM 03823U102 224,674 6,884 3.16 10,088 84.83 0.0026
2018-08-14 2018-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 225,919 8,129 10,144
2018-05-09 2018-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 217,790 -2,934 -1.33 5,458 -34.61 0.0014
2018-02-14 2017-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 220,724 2,913 1.34 8,347 -40.75 0.0021
2017-11-13 2017-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 217,811 17,987 9.00 14,087 14.10 0.0037
2017-08-11 2017-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 199,824 26,498 15.29 12,346 26.86 0.0035
2017-05-12 2017-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 173,326 3,146 1.85 9,732 143.97 0.0028
2017-02-13 2016-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 170,180 10,957 6.88 3,989 12.81 0.0012
2016-11-09 2016-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 159,223 1,256 0.80 3,536 100.80 0.0011
2016-08-12 2016-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 157,967 -21,052 -11.76 1,761 -34.02 0.0006
2016-08-19 2016-03-31 13F/A-1 APPLIED OPTOELECTRONICS COM 03823U102 179,019 597 0.33 2,669 -12.83 0.0009
2016-05-13 2016-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 179,019 2,669
2016-02-12 2015-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 178,422 14,996 9.18 3,062 -0.23 0.0010
2015-11-12 2015-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 163,426 24,830 17.92 3,069 27.56 0.0010
2015-08-13 2015-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 138,596 -135 -0.10 2,406 24.92 0.0016
2015-05-14 2015-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 138,731 -4,921 -3.43 1,926 19.48 0.0006
2015-02-12 2014-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 143,652 -2,376 -1.63 1,612 -31.43 0.0005
2014-11-13 2014-09-30 13F APPLIED OPTOELECTRONICS COM 03823U102 146,028 83,939 135.19 2,351 63.26 0.0007
2014-08-14 2014-06-30 13F APPLIED OPTOELECTRONICS COM 03823U102 62,089 10,077 19.37 1,440 12.24 0.0004
2014-05-14 2014-03-31 13F APPLIED OPTOELECTRONICS COM 03823U102 52,012 -5,539 -9.62 1,283 48.67 0.0004
2014-02-21 2013-12-31 13F/A-1 APPLIED OPTOELECTRONICS COM 03823U102 57,551 57,551 863 0.0003
2014-02-12 2013-12-31 13F APPLIED OPTOELECTRONICS COM 03823U102 57,551 863 0.0003
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.