Korea Investment CORP reports 17.30% decrease in ownership of DUK / Duke Energy Corporation

Duke Energy Corporation

US ˙ NYSE ˙ US26441C2044

Security	DUK / Duke Energy Corporation
Institution	Korea Investment CORP
Latest Disclosed Ownership	567,547 shares
Latest Disclosed Value	$ 74,314,604

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 567,547 shares of Duke Energy Corporation (US:DUK) valued at $74,314,604 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 686,293 shares of Duke Energy Corporation. This represents a change in shares of -17.30% during the quarter. The current value of the position is $68,695,889 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-13	2026-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	567,547	-118,746	-17.30	74,315	-7.62	0.1540
2026-02-13	2025-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	686,293	56,100	8.90	80,440	3.15	0.1583
2025-11-13	2025-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	630,193	17,978	2.94	77,986	7.95	0.1604
2025-08-13	2025-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	612,215	-27,315	-4.27	72,241	-7.39	0.1607
2025-05-14	2025-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	639,530	13,424	2.14	78,003	15.64	0.1891
2025-02-12	2024-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	626,106	-125,716	-16.72	67,457	-22.18	0.1599
2024-11-13	2024-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	751,822	148,445	24.60	86,685	43.34	0.2057
2024-08-13	2024-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	603,377	129,536	27.34	60,476	31.97	0.1524
2024-05-14	2024-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	473,841	-49,498	-9.46	45,825	-9.76	0.1163
2024-02-13	2023-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	523,339	52,672	11.19	50,785	22.25	0.1334
2023-11-13	2023-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	470,667	-30,781	-6.14	41,541	-7.68	0.1224
2023-08-11	2023-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	501,448	-66,734	-11.75	45,000	-17.90	0.1264
2023-05-12	2023-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	568,182	-88,594	-13.49	54,813	-18.97	0.1596
2023-02-13	2022-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	656,776	-74,058	-10.13	67,641	-0.50	0.2125
2022-11-10	2022-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	730,834	-64,159	-8.07	67,982	-20.24	0.2093
2022-08-12	2022-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	794,993	93,608	13.35	85,231	8.83	0.2605
2022-05-13	2022-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	701,385	121,633	20.98	78,317	28.78	0.1937
2022-02-09	2021-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	579,752	219,895	61.11	60,816	73.18	0.1581
2021-11-12	2021-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	359,857	-50,005	-12.20	35,118	-13.21	0.1047
2021-08-12	2021-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	409,862	-124,298	-23.27	40,462	-21.53	0.1159
2021-05-13	2021-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	534,160	97,768	22.40	51,562	29.05	0.1628
2021-02-10	2020-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	436,392	-241,568	-35.63	39,956	-33.45	0.1200
2020-11-12	2020-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	677,960	126,400	22.92	60,040	36.26	0.2121
2020-08-12	2020-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	551,560	-136,400	-19.83	44,064	-20.81	0.1619
2020-05-14	2020-03-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	687,960	121,500	21.45	55,642	7.69	0.2442
2020-02-11	2019-12-31	13F	DUKE ENERGY CORP	COM NEW	26441C204	566,460	101,400	21.80	51,667	15.89	0.1884
2019-11-12	2019-09-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	465,060	290,300	166.11	44,581	189.09	0.1885
2019-08-12	2019-06-30	13F	DUKE ENERGY CORP	COM NEW	26441C204	174,760	-34,200	-16.37	15,421	-18.00	0.0663
2019-05-15	2019-03-31	13F	DUKE ENERGY	COM	26441C204	208,960	17,820	9.32	18,806	14.01	0.0846
2019-02-13	2018-12-31	13F	DUKE ENERGY	COM	26441C204	191,140	30,000	18.62	16,495	27.93	0.0897
2018-11-13	2018-09-30	13F	DUKE ENERGY	COM	26441C204	161,140	-133,015	-45.22	12,894	-44.57	0.0595
2018-08-13	2018-06-30	13F	DUKE ENERGY	COM	26441C204	294,155	-22,700	-7.16	23,262	-5.23	0.1060
2018-05-09	2018-03-31	13F	DUKE ENERGY	COM	26441C204	316,855	-15,340	-4.62	24,547	-12.15	0.1142
2018-02-12	2017-12-31	13F	DUKE ENERGY	COM	26441C204	332,195	21,917	7.06	27,941	7.30	0.1272
2017-10-25	2017-09-30	13F	DUKE ENERGY	COM	26441C204	310,278	-2,100	-0.67	26,039	-0.28	0.1203
2017-07-31	2017-06-30	13F	DUKE ENERGY	COM	26441C204	312,378	27,852	9.79	26,112	11.91	0.1217
2017-04-25	2017-03-31	13F	DUKE ENERGY	COM	26441C204	284,526	-30,370	-9.64	23,334	-4.53	0.1157
2017-02-13	2016-12-31	13F	DUKE ENERGY	COM	26441C204	314,896	103,013	48.62	24,442	44.12	0.1175
2016-11-09	2016-09-30	13F	DUKE ENERGY	COM	26441C204	211,883	39,071	22.61	16,959	14.39	0.0904
2016-08-12	2016-06-30	13F	DUKE ENERGY	COM	26441C204	172,812	63,900	58.67	14,826	68.73	0.0883
2016-05-12	2016-03-31	13F	DUKE ENERGY	COM	26441C204	108,912	-62,388	-36.42	8,787	-28.15	0.0643
2016-02-01	2015-12-31	13F	DUKE ENERGY	COM	26441C204	171,300	-42,200	-19.77	12,229	-20.38	0.0852
2015-11-12	2015-09-30	13F	DUKE ENERGY	COM	26441C204	213,500	23,500	12.37	15,359	14.47	0.1223
2015-08-13	2015-06-30	13F	DUKE ENERGY	COM	26441C204	190,000	0	0.00	13,418	-8.02	0.1144
2015-05-11	2015-03-31	13F	DUKE ENERGY	COM	26441C204	190,000	5,100	2.76	14,588	-5.56	0.1136
2015-02-12	2014-12-31	13F	DUKE ENERGY	COM	26441C204	184,900	-323,400	-63.62	15,447	-59.36	0.1268
2014-11-14	2014-09-30	13F	DUKE ENERGY	COM	26441C204	508,300	800	0.16	38,006	0.94	0.3101
2014-08-14	2014-06-30	13F	DUKE ENERGY	COM	26441C204	507,500	2,900	0.57	37,651	4.77	0.3134
2014-05-14	2014-03-31	13F	DUKE ENERGY	COM	26441C204	504,600	-136,200	-21.25	35,938	-18.73	0.3182
2014-02-06	2013-12-31	13F	DUKE ENERGY	COM	26441C204	640,800	446,600	229.97	44,222	240.98	0.4181
2013-11-07	2013-09-30	13F/A-1	DUKE ENERGY	COM	26441C204	194,200	10,400	5.66	12,969	4.54	0.1378
2013-11-05	2013-09-30	13F	DUKE ENERGY	COM	26441C204	126,000			8,414
2013-08-08	2013-06-30	13F	DUKE ENERGY	COM	26441C204	183,800	183,800		12,406		0.1487

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.