Black Hills Corporation
US ˙ NYSE ˙ US0921131092

SecurityBKH / Black Hills Corporation
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership147,473 shares
Latest Disclosed Value $ 10,237,576
Alliancebernstein L.p. reports 52.30% decrease in ownership of BKH / Black Hills Corporation

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 147,473 shares of Black Hills Corporation (US:BKH) valued at $10,236,101 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 309,141 shares of Black Hills Corporation. This represents a change in shares of -52.30% during the quarter. The current value of the position is $10,603,309 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)
2026-05-15 2026-03-31 13F BLACK HILLS COM 092113109 147,473 -161,668 -52.30 10,238 -52.30 0.0033
2026-02-17 2025-12-31 13F BLACK HILLS COM 092113109 309,141 170,681 123.27 21,461 151.67 0.0068
2025-11-14 2025-09-30 13F BLACK HILLS COM 092113109 138,460 -6,718 -4.63 8,528 4.70 0.0027
2025-08-14 2025-06-30 13F BLACK HILLS COM 092113109 145,178 10,599 7.88 8,144 -0.22 0.0027
2025-05-15 2025-03-31 13F BLACK HILLS COM 092113109 134,579 -487 -0.36 8,162 3.26 0.0030
2025-02-12 2024-12-31 13F BLACK HILLS COM 092113109 135,066 -420 -0.31 7,904 -4.54 0.0027
2024-11-14 2024-09-30 13F BLACK HILLS COM 092113109 135,486 -1,680 -1.22 8,281 11.01 0.0028
2024-08-14 2024-06-30 13F BLACK HILLS COM 092113109 137,166 2,877 2.14 7,459 1.73 0.0026
2024-05-14 2024-03-31 13F BLACK HILLS COM 092113109 134,289 -3,722 -2.70 7,332 -1.52 0.0026
2024-02-14 2023-12-31 13F BLACK HILLS COM 092113109 138,011 -4,929 -3.45 7,446 2.96 0.0029
2023-11-14 2023-09-30 13F BLACK HILLS COM 092113109 142,940 -2,573 -1.77 7,231 -17.53 0.0031
2023-08-15 2023-06-30 13F BLACK HILLS COM 092113109 145,513 352 0.24 8,769 -4.27 0.0036
2023-05-15 2023-03-31 13F BLACK HILLS COM 092113109 145,161 -1,469 -1.00 9,160 -11.19 0.0039
2023-02-15 2022-12-31 13F BLACK HILLS COM 092113109 146,630 393 0.27 10,314 4.12 0.0046
2022-11-15 2022-09-30 13F BLACK HILLS COM 092113109 146,237 -790 -0.54 9,905 -7.42 0.0048
2022-08-15 2022-06-30 13F BLACK HILLS COM 092113109 147,027 -4,720 -3.11 10,699 -8.46 0.0049
2022-05-13 2022-03-31 13F BLACK HILLS COM 092113109 151,747 -289 -0.19 11,688 8.94 0.0045
2022-02-14 2021-12-31 13F BLACK HILLS COM 092113109 152,036 690 0.46 10,729 12.96 0.0038
2021-11-10 2021-09-30 13F BLACK HILLS COM 092113109 151,346 -1,396 -0.91 9,498 -5.25 0.0037
2021-07-30 2021-06-30 13F BLACK HILLS COM 092113109 152,742 -6,310 -3.97 10,024 -5.61 0.0040
2021-05-06 2021-03-31 13F BLACK HILLS COM 092113109 159,052 -22,118 -12.21 10,620 -4.61 0.0047
2021-02-08 2020-12-31 13F BLACK HILLS COM 092113109 181,170 -886,472 -83.03 11,133 -80.51 0.0053
2020-11-12 2020-09-30 13F BLACK HILLS COM 092113109 1,067,642 -373,317 -25.91 57,108 -30.05 0.0307
2020-08-13 2020-06-30 13F BLACK HILLS COM 092113109 1,440,959 8,426 0.59 81,645 -10.99 0.0480
2020-05-14 2020-03-31 13F BLACK HILLS COM 092113109 1,432,533 120,058 9.15 91,725 -11.02 0.0658
2020-02-18 2019-12-31 13F BLACK HILLS COM 092113109 1,312,475 -40,119 -2.97 103,082 -0.68 0.0586
2019-11-14 2019-09-30 13F BLACK HILLS COM 092113109 1,352,594 40,769 3.11 103,785 1.21 0.0646
2019-08-14 2019-06-30 13F BLACK HILLS COM 092113109 1,311,825 32,885 2.57 102,545 8.25 0.0637
2019-05-14 2019-03-31 13F BLACK HILLS COM 092113109 1,278,940 -96,429 -7.01 94,731 9.71 0.0617
2019-02-13 2018-12-31 13F BLACK HILLS COM 092113109 1,375,369 24,980 1.85 86,346 10.07 0.0641
2018-11-08 2018-09-30 13F BLACK HILLS COM 092113109 1,350,389 240,640 21.68 78,444 15.48 0.0512
2018-08-13 2018-06-30 13F BLACK HILLS COM 092113109 1,109,749 16,041 1.47 67,928 14.38 0.0473
2018-05-14 2018-03-31 13F BLACK HILLS COM 092113109 1,093,708 -40,874 -3.60 59,388 -12.92 0.0429
2018-02-13 2017-12-31 13F BLACK HILLS COM 092113109 1,134,582 354,262 45.40 68,200 26.90 0.0488
2017-11-13 2017-09-30 13F BLACK HILLS COM 092113109 780,320 699,570 866.34 53,741 886.44 0.0403
2017-08-10 2017-06-30 13F BLACK HILLS COM 092113109 80,750 5,850 7.81 5,448 9.42 0.0042
2017-05-11 2017-03-31 13F BLACK HILLS COM 092113109 74,900 -182 -0.24 4,979 8.10 0.0040
2017-02-13 2016-12-31 13F BLACK HILLS COM 092113109 75,082 -865 -1.14 4,606 -0.92 0.0038
2016-11-10 2016-09-30 13F BLACK HILLS COM 092113109 75,947 17 0.02 4,649 -2.88 0.0039
2016-08-11 2016-06-30 13F BLACK HILLS COM 092113109 75,930 70 0.09 4,787 4.96 0.0041
2016-05-13 2016-03-31 13F BLACK HILLS COM 092113109 75,860 2,680 3.66 4,561 34.23 0.0039
2016-02-16 2015-12-31 13F/A-1 BLACK HILLS COM 092113109 73,180 460 0.63 3,398 13.04 0.0029
2016-02-12 2015-12-31 13F BLACK HILLS COM 092113109 73,180 3,025
2015-11-13 2015-09-30 13F BLACK HILLS COM 092113109 72,720 -3,390 -4.45 3,006 -9.51 0.0026
2015-08-14 2015-06-30 13F BLACK HILLS COM 092113109 76,110 -150 -0.20 3,322 -13.65 0.0027
2015-05-13 2015-03-31 13F BLACK HILLS COM 092113109 76,260 -100 -0.13 3,847 -5.01 0.0031
2015-02-13 2014-12-31 13F BLACK HILLS COM 092113109 76,360 -1,700 -2.18 4,050 8.35 0.0034
2014-11-13 2014-09-30 13F BLACK HILLS COM 092113109 78,060 -80 -0.10 3,738 -22.08 0.0031
2014-08-13 2014-06-30 13F BLACK HILLS COM 092113109 78,140 -5,780 -6.89 4,797 -0.85 0.0040
2014-05-13 2014-03-31 13F BLACK HILLS COM 092113109 83,920 -8,290 -8.99 4,838 -0.08 0.0042
2014-02-13 2013-12-31 13F BLACK HILLS COM 092113109 92,210 -240 -0.26 4,842 5.03 0.0043
2013-11-14 2013-09-30 13F BLACK HILLS COM 092113109 92,450 800 0.87 4,610 3.18 0.0046
2013-08-13 2013-06-30 13F BLACK HILLS COM 092113109 91,650 91,650 4,468 0.0047
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.