Plexus Corp.
MX ˙ BMV ˙ US7291321005
SecurityMX:PLXS / Plexus Corp.
InstitutionRhumbline Advisers
Latest Disclosed Ownership77,048 shares
Latest Disclosed Value $ 15,605,276
Rhumbline Advisers reports 1.40% increase in ownership of PLXS / Plexus Corp.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 77,048 shares of Plexus Corp. (MX:PLXS) valued at $15,605,276 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 75,987 shares of Plexus Corp.. This represents a change in shares of 1.40% during the quarter.

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)
2026-05-12 2026-03-31 13F PLEXUS CORP COM COM 729132100 77,048 1,061 1.40 15,605 39.70 0.0133
2026-02-13 2025-12-31 13F PLEXUS CORP COM COM 729132100 75,987 -3,733 -4.68 11,170 -3.16 0.0090
2025-11-06 2025-09-30 13F PLEXUS CORP COM COM 729132100 79,720 -688 -0.86 11,535 6.02 0.0093
2025-08-12 2025-06-30 13F PLEXUS CORP COM COM 729132100 80,408 614 0.77 10,880 6.42 0.0093
2025-05-29 2025-03-31 13F/A-1 PLEXUS CORP COM COM 729132100 79,794 -2,285 -2.78 10,224 -20.40 0.0096
2025-04-08 2025-03-31 13F PLEXUS CORP COM COM 729132100 79,794 -2,285 10,224 0.0096
2025-05-29 2024-12-31 13F/A-1 PLEXUS CORP COM COM 729132100 82,079 -1,859 -2.21 12,844 11.92 0.0115
2025-01-30 2024-12-31 13F PLEXUS CORP COM COM 729132100 82,079 -1,859 12,844 0.0115
2024-11-12 2024-09-30 13F PLEXUS CORP COM COM 729132100 83,938 -4,134 -4.69 11,475 26.28 0.0104
2024-08-01 2024-06-30 13F PLEXUS CORP COM COM 729132100 88,072 1,851 2.15 9,087 11.16 0.0085
2024-05-09 2024-03-31 13F PLEXUS CORP COM COM 729132100 86,221 -579 -0.67 8,175 -12.89 0.0079
2024-02-08 2023-12-31 13F PLEXUS CORP COM COM 729132100 86,800 1,704 2.00 9,386 18.62 0.0098
2023-11-09 2023-09-30 13F PLEXUS CORP COM COM 729132100 85,096 -854 -0.99 7,912 -6.29 0.0092
2023-08-08 2023-06-30 13F PLEXUS CORP COM COM 729132100 85,950 -878 -1.01 8,444 105,437.50 0.0095
2023-05-11 2023-03-31 13F PLEXUS CORP COM COM 729132100 86,828 5,219 6.40 8 -99.90 0.0105
2023-02-14 2022-12-31 13F PLEXUS CORP COM COM 729132100 81,609 -2,386 -2.84 8,400 14.21 0.0113
2022-11-10 2022-09-30 13F PLEXUS CORP COM COM 729132100 83,995 1,688 2.05 7,355 13.84 0.0110
2022-08-11 2022-06-30 13F PLEXUS CORP COM COM 729132100 82,307 2,471 3.10 6,461 -1.07 0.0094
2022-05-12 2022-03-31 13F PLEXUS CORP COM COM 729132100 79,836 4,057 5.35 6,531 -10.12 0.0084
2022-02-10 2021-12-31 13F PLEXUS CORP COM COM 729132100 75,779 2,848 3.91 7,266 11.42 0.0089
2021-11-12 2021-09-30 13F PLEXUS CORP COM COM 729132100 72,931 -11,788 -13.91 6,521 -15.79 0.0088
2021-08-05 2021-06-30 13F PLEXUS CORP COM COM 729132100 84,719 -3,296 -3.74 7,744 -4.19 0.0102
2021-05-06 2021-03-31 13F PLEXUS CORP COM COM 729132100 88,015 742 0.85 8,083 18.41 0.0110
2021-02-10 2020-12-31 13F PLEXUS CORP COM COM 729132100 87,273 3,213 3.82 6,826 14.97 0.0094
2020-11-12 2020-09-30 13F PLEXUS CORP COM COM 729132100 84,060 -9,577 -10.23 5,937 -10.14 0.0093
2020-08-13 2020-06-30 13F PLEXUS CORP COM COM 729132100 93,637 -16,022 -14.61 6,607 10.43 0.0110
2020-05-06 2020-03-31 13F PLEXUS CORP COM COM 729132100 109,659 3,894 3.68 5,983 -26.48 0.0125
2020-02-05 2019-12-31 13F PLEXUS CORP COM COM 729132100 105,765 4,926 4.89 8,138 29.11 0.0136
2019-10-23 2019-09-30 13F PLEXUS CORP COM COM 729132100 100,839 3,555 3.65 6,303 11.01 0.0115
2019-08-14 2019-06-30 13F PLEXUS CORP COM COM 729132100 97,284 -584 -0.60 5,678 -4.81 0.0107
2019-05-01 2019-03-31 13F PLEXUS CORP COM COM 729132100 97,868 715 0.74 5,965 20.19 0.0116
2019-01-31 2018-12-31 13F PLEXUS CORP COM COM 729132100 97,153 15,104 18.41 4,963 3.37 0.0108
2018-11-07 2018-09-30 13F PLEXUS CORP COM COM 729132100 82,049 -2,150 -2.55 4,801 -4.23 0.0093
2018-08-06 2018-06-30 13F PLEXUS CORP COM COM 729132100 84,199 -928 -1.09 5,013 -1.42 0.0101
2018-05-02 2018-03-31 13F PLEXUS CORP COM COM 729132100 85,127 718 0.85 5,085 -0.78 0.0106
2018-02-09 2017-12-31 13F PLEXUS CORP COM COM 729132100 84,409 10,711 14.53 5,125 24.00 0.0104
2017-11-06 2017-09-30 13F PLEXUS CORP COM COM 729132100 73,698 1,175 1.62 4,133 8.39 0.0090
2017-08-02 2017-06-30 13F PLEXUS CORP COM COM 729132100 72,523 -907 -1.24 3,813 -10.16 0.0087
2017-05-02 2017-03-31 13F PLEXUS CORP COM COM 729132100 73,430 19,644 36.52 4,244 45.99 0.0099
2017-01-27 2016-12-31 13F PLEXUS CORP COM COM 729132100 53,786 -2,540 -4.51 2,907 10.32 0.0074
2016-11-08 2016-09-30 13F PLEXUS CORP COM COM 729132100 56,326 3,456 6.54 2,635 15.37 0.0073
2016-08-11 2016-06-30 13F PLEXUS CORP COM COM 729132100 52,870 -3,313 -5.90 2,284 2.88 0.0068
2016-05-02 2016-03-31 13F PLEXUS CORP USD.0 COM 729132100 56,183 3,385 6.41 2,220 20.39 0.0069
2016-02-03 2015-12-31 13F PLEXUS CORP USD.0 COM 729132100 52,798 2,290 4.53 1,844 -5.39 0.0059
2015-11-04 2015-09-30 13F PLEXUS CORP USD.0 COM 729132100 50,508 1,974 4.07 1,949 -8.50 0.0066
2015-08-04 2015-06-30 13F PLEXUS CORP USD.0 COM 729132100 48,534 -2,195 -4.33 2,130 3.00 0.0068
2015-05-12 2015-03-31 13F PLEXUS CORP USD.0 COM 729132100 50,729 1,115 2.25 2,068 1.12 0.0060
2015-02-06 2014-12-31 13F PLEXUS CORP USD.0 COM 729132100 49,614 780 1.60 2,045 13.42 0.0059
2014-11-12 2014-09-30 13F PLEXUS CORP USD.0 COM 729132100 48,834 200 0.41 1,803 -14.35 0.0054
2014-08-06 2014-06-30 13F PLEXUS CORP USD.0 COM 729132100 48,634 -6,092 -11.13 2,105 -4.01 0.0062
2014-05-06 2014-03-31 13F PLEXUS CORP USD.0 COM 729132100 54,726 -1,620 -2.88 2,193 -10.09 0.0065
2014-02-03 2013-12-31 13F PLEXUS CORP USD.0 COM 729132100 56,346 -2,900 -4.89 2,439 10.66 0.0072
2013-11-05 2013-09-30 13F PLEXUS CORP USD.0 COM 729132100 59,246 -494 -0.83 2,204 23.40 0.0068
2013-08-07 2013-06-30 13F PLEXUS CORP USD.0 COM 729132100 59,740 59,740 1,786 0.0057
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.