Black Hills Corporation
US ˙ NYSE ˙ US0921131092

SecurityBKH / Black Hills Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership230,849 shares
Latest Disclosed Value $ 16,023,206
Rhumbline Advisers reports 2.40% increase in ownership of BKH / Black Hills Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 230,849 shares of Black Hills Corporation (US:BKH) valued at $16,023,229 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 225,446 shares of Black Hills Corporation. This represents a change in shares of 2.40% during the quarter. The current value of the position is $16,801,190 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)
2026-05-12 2026-03-31 13F BLACK HILLS CORP COM COM 092113109 230,849 5,403 2.40 16,023 2.38 0.0137
2026-02-13 2025-12-31 13F BLACK HILLS CORP COM COM 092113109 225,446 -16,121 -6.67 15,650 5.19 0.0127
2025-11-06 2025-09-30 13F BLACK HILLS CORP COM COM 092113109 241,567 -3,552 -1.45 14,878 8.20 0.0119
2025-08-12 2025-06-30 13F BLACK HILLS CORP COM COM 092113109 245,119 6,123 2.56 13,751 -5.13 0.0118
2025-05-29 2025-03-31 13F/A-1 BLACK HILLS CORP COM COM 092113109 238,996 -1,412 -0.59 14,495 3.04 0.0136
2025-04-08 2025-03-31 13F BLACK HILLS CORP COM COM 092113109 238,996 -1,412 14,495 0.0136
2025-05-29 2024-12-31 13F/A-1 BLACK HILLS CORP COM COM 092113109 240,408 6,843 2.93 14,069 -1.45 0.0126
2025-01-30 2024-12-31 13F BLACK HILLS CORP COM COM 092113109 240,408 6,843 14,069 0.0126
2024-11-12 2024-09-30 13F BLACK HILLS CORP COM COM 092113109 233,565 -8,050 -3.33 14,275 8.65 0.0129
2024-08-01 2024-06-30 13F BLACK HILLS CORP COM COM 092113109 241,615 3,783 1.59 13,139 1.19 0.0123
2024-05-09 2024-03-31 13F BLACK HILLS CORP COM COM 092113109 237,832 -12,315 -4.92 12,986 -3.78 0.0125
2024-02-08 2023-12-31 13F BLACK HILLS CORP COM COM 092113109 250,147 16,212 6.93 13,495 14.04 0.0141
2023-11-09 2023-09-30 13F BLACK HILLS CORP COM COM 092113109 233,935 2,775 1.20 11,835 -15.04 0.0137
2023-08-08 2023-06-30 13F BLACK HILLS CORP COM COM 092113109 231,160 -6,416 -2.70 13,930 99,392.86 0.0156
2023-05-11 2023-03-31 13F BLACK HILLS CORP COM COM 092113109 237,576 1,013 0.43 15 -99.92 0.0185
2023-02-14 2022-12-31 13F BLACK HILLS CORP COM COM 092113109 236,563 3,128 1.34 16,640 5.24 0.0224
2022-11-10 2022-09-30 13F BLACK HILLS CORP COM COM 092113109 233,435 7,652 3.39 15,811 -3.77 0.0236
2022-08-11 2022-06-30 13F BLACK HILLS CORP COM COM 092113109 225,783 20,702 10.09 16,430 4.02 0.0240
2022-05-12 2022-03-31 13F BLACK HILLS CORP COM COM 092113109 205,081 -2,427 -1.17 15,795 7.86 0.0203
2022-02-10 2021-12-31 13F BLACK HILLS CORP COM COM 092113109 207,508 2,535 1.24 14,644 13.84 0.0179
2021-11-12 2021-09-30 13F BLACK HILLS CORP COM COM 092113109 204,973 -167 -0.08 12,864 -4.45 0.0174
2021-08-05 2021-06-30 13F BLACK HILLS CORP COM COM 092113109 205,140 -7,815 -3.67 13,463 -5.32 0.0177
2021-05-06 2021-03-31 13F BLACK HILLS CORP COM COM 092113109 212,955 -8,019 -3.63 14,219 4.71 0.0193
2021-02-10 2020-12-31 13F BLACK HILLS CORP COM COM 092113109 220,974 18,048 8.89 13,579 25.09 0.0187
2020-11-12 2020-09-30 13F BLACK HILLS CORP COM COM 092113109 202,926 -23,538 -10.39 10,855 -15.40 0.0170
2020-08-13 2020-06-30 13F BLACK HILLS CORP COM COM 092113109 226,464 8,199 3.76 12,831 -8.19 0.0214
2020-05-06 2020-03-31 13F BLACK HILLS CORP COM COM 092113109 218,265 7,894 3.75 13,976 -15.41 0.0293
2020-02-05 2019-12-31 13F BLACK HILLS CORP COM COM 092113109 210,371 -1,980 -0.93 16,523 1.41 0.0276
2019-10-23 2019-09-30 13F BLACK HILLS CORP COM COM 092113109 212,351 18,499 9.54 16,294 7.53 0.0298
2019-08-14 2019-06-30 13F BLACK HILLS CORP COM COM 092113109 193,852 8,415 4.54 15,153 10.32 0.0284
2019-05-01 2019-03-31 13F BLACK HILLS CORP COM COM 092113109 185,437 2,780 1.52 13,735 19.78 0.0266
2019-01-31 2018-12-31 13F BLACK HILLS CORP COM COM 092113109 182,657 74,371 68.68 11,467 82.31 0.0250
2018-11-07 2018-09-30 13F BLACK HILLS CORP COM COM 092113109 108,286 407 0.38 6,290 -4.74 0.0121
2018-08-06 2018-06-30 13F BLACK HILLS CORP COM COM 092113109 107,879 384 0.36 6,603 13.12 0.0133
2018-05-02 2018-03-31 13F BLACK HILLS CORP COM COM 092113109 107,495 -5,711 -5.04 5,837 -14.22 0.0122
2018-02-09 2017-12-31 13F BLACK HILLS CORP COM COM 092113109 113,206 -18,519 -14.06 6,805 -24.99 0.0138
2017-11-06 2017-09-30 13F BLACK HILLS CORP COM COM 092113109 131,725 10,267 8.45 9,072 10.70 0.0197
2017-08-02 2017-06-30 13F BLACK HILLS CORP COM COM 092113109 121,458 990 0.82 8,195 2.34 0.0187
2017-05-02 2017-03-31 13F BLACK HILLS CORP COM COM 092113109 120,468 3,028 2.58 8,008 11.16 0.0187
2017-01-27 2016-12-31 13F BLACK HILLS CORP COM COM 092113109 117,440 -726 -0.61 7,204 -0.41 0.0183
2016-11-08 2016-09-30 13F BLACK HILLS CORP COM COM 092113109 118,166 5,230 4.63 7,234 1.62 0.0199
2016-08-11 2016-06-30 13F BLACK HILLS CORP COM COM 092113109 112,936 -13,698 -10.82 7,119 -6.51 0.0211
2016-05-02 2016-03-31 13F BLACK HILLS CORP COM 092113109 126,634 16,660 15.15 7,615 49.14 0.0236
2016-02-03 2015-12-31 13F BLACK HILLS CORP COM 092113109 109,974 4,765 4.53 5,106 17.41 0.0164
2015-11-04 2015-09-30 13F BLACK HILLS CORP COM 092113109 105,209 4,434 4.40 4,349 -1.14 0.0148
2015-08-04 2015-06-30 13F BLACK HILLS CORP COM 092113109 100,775 -525 -0.52 4,399 -13.91 0.0140
2015-05-12 2015-03-31 13F BLACK HILLS CORP COM 092113109 101,300 4,360 4.50 5,110 -0.62 0.0147
2015-02-06 2014-12-31 13F BLACK HILLS CORP COM 092113109 96,940 2,925 3.11 5,142 14.24 0.0149
2014-11-12 2014-09-30 13F BLACK HILLS CORP COM 092113109 94,015 1,600 1.73 4,501 -20.66 0.0135
2014-08-06 2014-06-30 13F BLACK HILLS CORP COM 092113109 92,415 -8,954 -8.83 5,673 -2.93 0.0166
2014-05-06 2014-03-31 13F BLACK HILLS CORP COM 092113109 101,369 -2,140 -2.07 5,844 7.53 0.0173
2014-02-03 2013-12-31 13F BLACK HILLS CORP COM 092113109 103,509 -5,034 -4.64 5,435 0.42 0.0160
2013-11-05 2013-09-30 13F BLACK HILLS CORP COM 092113109 108,543 -59 -0.05 5,412 2.23 0.0168
2013-08-07 2013-06-30 13F BLACK HILLS CORP COM 092113109 108,602 108,602 5,294 0.0170
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.