ONEOK, Inc.
US ˙ NYSE ˙ US6826801036

SecurityOKE / ONEOK, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership3,830,346 shares
Latest Disclosed Value $ 346,224,612
Janus Henderson Group Plc reports 5.79% increase in ownership of OKE / ONEOK, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 3,830,346 shares of ONEOK, Inc. (US:OKE) valued at $346,224,975 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,620,540 shares of ONEOK, Inc.. This represents a change in shares of 5.79% during the quarter. The current value of the position is $340,709,277 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)
2026-05-18 2026-03-31 13F/A-1 ONEOK INC COM 682680103 3,830,346 209,806 5.79 346,225 30.11 0.1653
2026-05-15 2026-03-31 13F ONEOK INC COM 682680103 151,550 -3,468,990 13,698 0.0025
2026-02-17 2025-12-31 13F ONEOK INC COM 682680103 3,620,540 61,813 1.74 266,111 2.48 0.1192
2025-11-14 2025-09-30 13F ONEOK INC COM 682680103 3,558,727 -3,387 -0.10 259,680 -10.69 0.1186
2025-08-14 2025-06-30 13F ONEOK INC COM 682680103 3,562,114 313,155 9.64 290,773 -9.12 0.1425
2025-05-15 2025-03-31 13F ONEOK INC COM 682680103 3,248,959 -137,459 -4.06 319,956 -5.89 0.1754
2025-02-14 2024-12-31 13F ONEOK INC COM 682680103 3,386,418 -364,754 -9.72 339,998 -0.54 0.1728
2024-11-14 2024-09-30 13F ONEOK INC COM 682680103 3,751,172 11,189 0.30 341,844 12.08 0.1750
2024-08-14 2024-06-30 13F ONEOK INC COM 682680103 3,739,983 14,079 0.38 304,995 2.11 0.1633
2024-05-15 2024-03-31 13F ONEOK INC COM 682680103 3,725,904 -766,097 -17.05 298,704 -5.30 0.1629
2024-02-14 2023-12-31 13F ONEOK INC COM 682680103 4,492,001 -8,173 -0.18 315,427 10.50 0.1881
2023-11-14 2023-09-30 13F ONEOK INC COM 682680103 4,500,174 4,393,010 4,099.33 285,446 4,216.44 0.1869
2023-08-14 2023-06-30 13F ONEOK INC COM 682680103 107,164 -12,680 -10.58 6,614 -13.14 0.0041
2023-05-15 2023-03-31 13F ONEOK INC COM 682680103 119,844 63,120 111.28 7,614 104.27 0.0050
2023-02-14 2022-12-31 13F ONEOK INC COM 682680103 56,724 -4 -0.01 3,727 28.16 0.0027
2023-01-13 2022-09-30 13F/A-1 ONEOK INC COM 682680103 56,728 -62,258 -52.32 2,908 -55.97 0.0022
2022-11-14 2022-09-30 13F ONEOK INC COM 682680103 56,728 -62,258 2,908 0.0022
2022-08-15 2022-06-30 13F ONEOK INC COM 682680103 118,986 -134,238 -53.01 6,604 -63.08 0.0046
2022-05-16 2022-03-31 13F ONEOK INC COM 682680103 253,224 173,905 219.25 17,886 283.74 0.0086
2022-02-14 2021-12-31 13F ONEOK INC COM 682680103 79,319 -353,487 -81.67 4,661 -81.43 0.0019
2021-11-16 2021-09-30 13F ONEOK INC COM 682680103 432,806 254,516 142.75 25,098 153.00 0.0110
2021-08-16 2021-06-30 13F ONEOK INC COM 682680103 178,290 77,094 76.18 9,920 93.56 0.0042
2021-05-17 2021-03-31 13F ONEOK INC COM 682680103 101,196 -19,942 -16.46 5,125 10.24 0.0023
2021-02-16 2020-12-31 13F ONEOK INC COM 682680103 121,138 6,700 5.85 4,649 56.37 0.0022
2020-11-16 2020-09-30 13F ONEOK INC COM 682680103 114,438 -330,531 -74.28 2,973 -79.88 0.0015
2020-08-14 2020-06-30 13F ONEOK INC COM 682680103 444,969 -1,078,794 -70.80 14,775 -55.54 0.0083
2020-05-14 2020-03-31 13F ONEOK INC COM 682680103 1,523,763 -650,109 -29.91 33,233 -79.80 0.0229
2020-02-18 2019-12-31 13F ONEOK INC COM 682680103 2,173,872 233,318 12.02 164,497 15.03 0.0842
2019-11-14 2019-09-30 13F ONEOK INC COM 682680103 1,940,554 -119,998 -5.82 142,999 0.86 0.0775
2019-07-31 2019-06-30 13F ONEOK INC COM 682680103 2,060,552 37,495 1.85 141,785 0.35 0.0772
2019-04-30 2019-03-31 13F ONEOK INC COM 682680103 2,023,057 -780,225 -27.83 141,290 -6.58 0.0783
2019-02-06 2018-12-31 13F ONEOK INC COM 682680103 2,803,282 1,482,808 112.29 151,236 68.95 0.0965
2018-11-09 2018-09-30 13F ONEOK INC COM 682680103 1,320,474 845,352 177.92 89,515 169.78 0.0478
2018-08-10 2018-06-30 13F ONEOK INC COM 682680103 475,122 25,886 5.76 33,181 29.77 0.0189
2018-05-14 2018-03-31 13F ONEOK INC COM 682680103 449,236 -208,860 -31.74 25,570 -27.31 0.0151
2018-03-12 2017-12-31 13F/A-1 ONEOK INC COM 682680103 658,096 -751,850 -53.32 35,176 -54.97 0.0217
2018-02-09 2017-12-31 13F ONEOK INC COM 682680103 658,096 -751,850 35,176
2017-11-14 2017-09-30 13F ONEOK INC COM 682680103 1,409,946 -848,192 -37.56 78,125 -33.67 0.0501
2017-08-17 2017-06-30 13F/A-1 ONEOK INC COM 682680103 2,258,138 2,236,415 10,295.15 117,779 9,682.31 0.0803
2017-08-14 2017-06-30 13F ONEOK INC COM 682680103 2,258,138 2,236,415 117,779
2017-05-03 2017-03-31 13F ONEOK INC COM 682680103 21,723 0 0.00 1,204 -3.45 0.0085
2017-01-30 2016-12-31 13F ONEOK INC COM 682680103 21,723 -1,832 -7.78 1,247 2.97 0.0092
2016-10-24 2016-09-30 13F ONEOK INC COM 682680103 23,555 0 0.00 1,211 8.32 0.0089
2016-07-29 2016-06-30 13F ONEOK INC COM 682680103 23,555 0 0.00 1,118 59.03 0.0093
2016-05-12 2016-03-31 13F ONEOK INC COM 682680103 23,555 0 0.00 703 21.00 0.0057
2016-02-03 2015-12-31 13F ONEOK INC COM 682680103 23,555 0 0.00 581 -23.35 0.0047
2015-11-16 2015-09-30 13F ONEOK INC COM 682680103 23,555 0 0.00 758 -18.49 0.0067
2015-08-17 2015-06-30 13F ONEOK INC COM 682680103 23,555 0 0.00 930 -18.13 0.0073
2015-06-02 2015-03-31 13F/A-1 ONEOK INC COM 682680103 23,555 -10,533 -30.90 1,136 -33.06 0.0088
2015-05-15 2015-03-31 13F ONEOK INC COM 682680103 23,555 1,136
2015-02-12 2014-12-31 13F ONEOK INC COM 682680103 34,088 0 0.00 1,697 -24.07 0.0122
2014-11-12 2014-09-30 13F ONEOK INC COM 682680103 34,088 0 0.00 2,235 -3.71 0.0210
2014-08-13 2014-06-30 13F ONEOK INC COM 682680103 34,088 0 0.00 2,321 14.96 0.0217
2014-05-08 2014-03-31 13F ONEOK INC COM 682680103 34,088 2,323 7.31 2,019 2.23 0.0197
2014-01-14 2013-12-31 13F ONEOK INC COM 682680103 31,765 6,903 27.77 1,975 48.94 0.0200
2013-11-12 2013-09-30 13F ONEOK INC COM 682680103 24,862 6,688 36.80 1,326 78.23 0.0146
2013-08-15 2013-06-30 13F ONEOK INC COM 682680103 18,174 18,174 744 0.0087
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.