Duke Energy Corporation
US ˙ NYSE ˙ US26441C2044

SecurityDUK / Duke Energy Corporation
InstitutionMarble Harbor Investment Counsel, LLC
Latest Disclosed Ownership11,958 shares
Latest Disclosed Value $ 1,565,796
Marble Harbor Investment Counsel, LLC ownership in DUK / Duke Energy Corporation

On May 8, 2026 - Marble Harbor Investment Counsel, LLC filed a 13F-HR form disclosing ownership of 11,958 shares of Duke Energy Corporation (US:DUK) valued at $1,565,781 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 11,958 shares of Duke Energy Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,447,396 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)
2026-05-08 2026-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,958 0 0.00 1,566 11.71 0.1697
2026-02-06 2025-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,958 0 0.00 1,402 -5.27 0.1498
2025-11-07 2025-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,958 0 0.00 1,480 4.82 0.1550
2025-08-08 2025-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,958 -200 -1.65 1,411 -4.79 0.1537
2025-05-09 2025-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 12,158 0 0.00 1,483 13.22 0.1670
2025-02-07 2024-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 12,158 -719 -5.58 1,310 -11.79 0.1444
2024-11-08 2024-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 12,877 -449 -3.37 1,485 11.16 0.1624
2024-08-09 2024-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,326 -41 -0.31 1,336 3.33 0.1572
2024-05-10 2024-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,367 42 0.32 1,293 -0.08 0.1490
2024-02-09 2023-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,325 -558 -4.02 1,293 5.55 0.1591
2023-11-09 2023-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,883 0 0.00 1,225 -1.61 0.1608
2023-08-10 2023-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,883 -150 -1.07 1,246 -7.98 0.1568
2023-05-10 2023-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 14,033 0 0.00 1,354 -6.37 0.1752
2023-02-10 2022-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 14,033 0 0.00 1,445 10.73 0.1946
2022-11-08 2022-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 14,033 195 1.41 1,305 -12.06 0.1992
2022-08-11 2022-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,838 195 1.43 1,484 -2.56 0.2261
2022-05-09 2022-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,643 -24 -0.18 1,523 6.21 0.1892
2022-02-10 2021-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,667 2,300 20.23 1,434 29.31 0.1671
2021-11-10 2021-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,367 174 1.55 1,109 0.36 0.1493
2021-08-09 2021-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,193 0 0.00 1,105 2.31 0.1426
2021-05-10 2021-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,193 0 0.00 1,080 5.37 0.1477
2021-02-08 2020-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,193 -100 -0.89 1,025 2.50 0.1508
2020-11-09 2020-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,293 0 0.00 1,000 10.86 0.1637
2020-08-06 2020-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,293 -266 -2.30 902 -3.53 0.1569
2020-05-07 2020-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,559 -10 -0.09 935 -11.37 0.1841
2020-02-05 2019-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,569 -852 -6.86 1,055 -11.42 0.1666
2019-11-06 2019-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 12,421 -300 -2.36 1,191 6.06 0.2115
2019-08-07 2019-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 12,721 0 0.00 1,123 -1.92 0.1940
2019-05-08 2019-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 12,721 -566 -4.26 1,145 -0.17 0.2037
2019-02-07 2018-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,287 -366 -2.68 1,147 4.94 0.2290
2018-11-06 2018-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,653 0 0.00 1,093 1.20 0.1942
2018-08-09 2018-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,653 -326 -2.33 1,080 -0.28 0.2056
2018-05-10 2018-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,979 0 0.00 1,083 -7.91 0.2142
2018-02-06 2017-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,979 0 0.00 1,176 0.26 0.2287
2017-11-07 2017-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 13,979 -160 -1.13 1,173 -0.76 0.2392
2017-08-08 2017-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 14,139 0 0.00 1,182 1.90 0.2626
2017-05-08 2017-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 14,139 718 5.35 1,160 11.32 0.2600
2017-02-08 2016-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 13,421 2,692 25.09 1,042 21.30 0.2406
2016-11-03 2016-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 10,729 -174 -1.60 859 -8.13 0.2072
2016-08-08 2016-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 10,903 -419 -3.70 935 2.41 0.2323
2016-05-03 2016-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,322 0 0.00 913 13.00 0.2310
2016-02-04 2015-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,322 -100 -0.88 808 -1.70 0.2152
2015-11-04 2015-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,422 0 0.00 822 1.86 0.2261
2015-08-04 2015-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,422 0 0.00 807 -7.98 0.2062
2015-05-05 2015-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,422 -1 -0.01 877 -8.07 0.2197
2015-02-10 2014-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,423 0 0.00 954 11.71 0.2174
2014-11-06 2014-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,423 -66 -0.57 854 0.23 0.2065
2014-08-06 2014-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,489 416 3.76 852 7.98 0.2017
2014-05-07 2014-03-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,073 -166 -1.48 789 1.68 0.2044
2014-02-07 2013-12-31 13F/A-1 DUKE ENERGY CORP COM NEW 26441C204 11,239 0 0.00 776 3.33 0.2049
2014-02-06 2013-12-31 13F DUKE ENERGY CORP COM NEW 26441C204 11,239 776
2013-11-06 2013-09-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,239 -146 -1.28 751 -2.21 0.2138
2013-08-08 2013-06-30 13F DUKE ENERGY CORP COM NEW 26441C204 11,385 11,385 768 0.2294
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.