Ducommun Incorporated
US ˙ NYSE ˙ US2641471097

SecurityDCO / Ducommun Incorporated
InstitutionNorthern Trust Corp
Latest Disclosed Ownership119,705 shares
Latest Disclosed Value $ 14,604,010
Northern Trust Corp reports 4.47% increase in ownership of DCO / Ducommun Incorporated

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 119,705 shares of Ducommun Incorporated (US:DCO) valued at $14,604,010 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 114,578 shares of Ducommun Incorporated. This represents a change in shares of 4.47% during the quarter. The current value of the position is $17,972,509 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 DUCOMMUN INC DEL COM 264147109 119,705 5,127 4.47 14,604 33.99 0.0004
2026-02-17 2025-12-31 13F DUCOMMUN INC DEL COM 264147109 114,578 -8,585 -6.97 10,900 -7.94 0.0003
2025-11-14 2025-09-30 13F DUCOMMUN INC DEL COM 264147109 123,163 576 0.47 11,840 16.88 0.0003
2025-08-13 2025-06-30 13F DUCOMMUN INC DEL COM 264147109 122,587 -2,219 -1.78 10,129 39.86 0.0014
2025-05-13 2025-03-31 13F DUCOMMUN INC DEL COM 264147109 124,806 -5,371 -4.13 7,242 -12.61 0.0011
2025-02-14 2024-12-31 13F DUCOMMUN INC DEL COM 264147109 130,177 6,649 5.38 8,287 1.92 0.0012
2024-11-13 2024-09-30 13F DUCOMMUN INC DEL COM 264147109 123,528 -554 -0.45 8,132 12.87 0.0013
2024-08-14 2024-06-30 13F DUCOMMUN INC DEL COM 264147109 124,082 -4,032 -3.15 7,204 9.62 0.0012
2024-05-14 2024-03-31 13F DUCOMMUN INC DEL COM 264147109 128,114 965 0.76 6,572 -0.71 0.0011
2024-02-13 2023-12-31 13F DUCOMMUN INC DEL COM 264147109 127,149 4,021 3.27 6,619 23.56 0.0012
2023-11-13 2023-09-30 13F DUCOMMUN INC DEL COM 264147109 123,128 16,099 15.04 5,357 14.88 0.0010
2023-08-11 2023-06-30 13F DUCOMMUN INC DEL COM 264147109 107,029 1,753 1.67 4,663 -19.03 0.0009
2023-05-15 2023-03-31 13F DUCOMMUN INC DEL COM 264147109 105,276 -2,101 -1.96 5,760 7.36 0.0011
2023-02-13 2022-12-31 13F DUCOMMUN INC DEL COM 264147109 107,377 1,405 1.33 5,365 27.62 0.0011
2022-11-14 2022-09-30 13F DUCOMMUN INC DEL COM 264147109 105,972 -36 -0.03 4,203 -7.87 0.0010
2022-08-12 2022-06-30 13F DUCOMMUN INC DEL COM 264147109 106,008 -227 -0.21 4,562 -18.04 0.0010
2022-05-13 2022-03-31 13F DUCOMMUN INC DEL COM 264147109 106,235 -4,206 -3.81 5,566 7.76 0.0010
2022-02-08 2021-12-31 13F DUCOMMUN INC DEL COM 264147109 110,441 330 0.30 5,165 -6.82 0.0008
2021-11-15 2021-09-30 13F DUCOMMUN INC DEL COM 264147109 110,111 -5,489 -4.75 5,543 -12.11 0.0010
2021-08-13 2021-06-30 13F DUCOMMUN INC DEL COM 264147109 115,600 -2,362 -2.00 6,307 -10.89 0.0011
2021-05-12 2021-03-31 13F DUCOMMUN INC DEL COM 264147109 117,962 -12,259 -9.41 7,078 1.22 0.0013
2021-02-11 2020-12-31 13F DUCOMMUN INC DEL COM 264147109 130,221 -8,253 -5.96 6,993 53.39 0.0014
2020-11-16 2020-09-30 13F DUCOMMUN INC DEL COM 264147109 138,474 -5,288 -3.68 4,559 -9.06 0.0010
2020-08-14 2020-06-30 13F DUCOMMUN INC DEL COM 264147109 143,762 2,529 1.79 5,013 42.86 0.0012
2020-05-14 2020-03-31 13F DUCOMMUN INC DEL COM 264147109 141,233 -165 -0.12 3,509 -50.89 0.0010
2020-02-14 2019-12-31 13F DUCOMMUN INC DEL COM 264147109 141,398 -569 -0.40 7,145 18.71 0.0016
2019-11-13 2019-09-30 13F DUCOMMUN INC DEL COM 264147109 141,967 4,354 3.16 6,019 -2.95 0.0014
2019-08-13 2019-06-30 13F DUCOMMUN INC DEL COM 264147109 137,613 6,589 5.03 6,202 8.79 0.0015
2019-05-13 2019-03-31 13F DUCOMMUN INC DEL COM 264147109 131,024 -12,192 -8.51 5,701 9.59 0.0014
2019-02-12 2018-12-31 13F DUCOMMUN INC DEL COM 264147109 143,216 -20,418 -12.48 5,202 -22.16 0.0015
2018-11-14 2018-09-30 13F DUCOMMUN INC DEL COM 264147109 163,634 -516 -0.31 6,683 23.05 0.0016
2018-09-18 2018-06-30 13F/A-1 DUCOMMUN INC DEL COM 264147109 164,150 -149 -0.09 5,431 8.82 0.0014
2018-08-14 2018-06-30 13F DUCOMMUN INC DEL COM 264147109 164,876 577 5,455
2018-05-09 2018-03-31 13F DUCOMMUN INC DEL COM 264147109 164,299 -1,984 -1.19 4,991 5.50 0.0013
2018-02-14 2017-12-31 13F DUCOMMUN INC DEL COM 264147109 166,283 -5,742 -3.34 4,731 -14.20 0.0012
2017-11-13 2017-09-30 13F DUCOMMUN INC DEL COM 264147109 172,025 -16,109 -8.56 5,514 -7.19 0.0014
2017-08-11 2017-06-30 13F DUCOMMUN INC DEL COM 264147109 188,134 -26,081 -12.18 5,941 -3.68 0.0017
2017-05-12 2017-03-31 13F DUCOMMUN INC DEL COM 264147109 214,215 11,476 5.66 6,168 19.03 0.0018
2017-02-13 2016-12-31 13F DUCOMMUN INC DEL COM 264147109 202,739 3,510 1.76 5,182 13.89 0.0016
2016-11-09 2016-09-30 13F DUCOMMUN INC DEL COM 264147109 199,229 540 0.27 4,550 15.78 0.0014
2016-08-12 2016-06-30 13F DUCOMMUN INC DEL COM 264147109 198,689 4,218 2.17 3,930 32.50 0.0013
2016-08-19 2016-03-31 13F/A-1 DUCOMMUN INC DEL COM 264147109 194,471 1,320 0.68 2,966 -5.33 0.0010
2016-05-13 2016-03-31 13F DUCOMMUN INC DEL COM 264147109 194,471 2,966
2016-02-12 2015-12-31 13F DUCOMMUN INC DEL COM 264147109 193,151 -2,070 -1.06 3,133 -20.06 0.0010
2015-11-12 2015-09-30 13F DUCOMMUN INC DEL COM 264147109 195,221 -185 -0.09 3,919 -21.87 0.0013
2015-08-13 2015-06-30 13F DUCOMMUN INC DEL COM 264147109 195,406 4,794 2.52 5,016 1.60 0.0034
2015-05-14 2015-03-31 13F DUCOMMUN INC DEL COM 264147109 190,612 7,022 3.82 4,937 6.38 0.0015
2015-02-12 2014-12-31 13F DUCOMMUN INC DEL COM 264147109 183,590 -4,752 -2.52 4,641 -10.11 0.0014
2014-11-13 2014-09-30 13F DUCOMMUN INC DEL COM 264147109 188,342 -3,630 -1.89 5,163 2.91 0.0016
2014-08-14 2014-06-30 13F DUCOMMUN INC DEL COM 264147109 191,972 -9,807 -4.86 5,017 -0.77 0.0016
2014-05-14 2014-03-31 13F DUCOMMUN INC DEL COM 264147109 201,779 -5,540 -2.67 5,056 -18.19 0.0016
2014-02-21 2013-12-31 13F/A-1 DUCOMMUN INC DEL COM 264147109 207,319 8,561 4.31 6,180 8.40 0.0020
2014-02-12 2013-12-31 13F DUCOMMUN INC DEL COM 264147109 207,319 6,180
2013-11-13 2013-09-30 13F DUCOMMUN INC DEL COM 264147109 198,758 80,516 68.09 5,701 126.77 0.0020
2013-08-09 2013-06-30 13F DUCOMMUN INC DEL COM 264147109 118,242 118,242 2,514 0.0009
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.