ONEOK, Inc.
DE ˙ XTRA ˙ US6826801036
74,36 € ↑0,22 (0,30%)
2026-06-04
DEL PRIS
SecurityDE:ONK / ONEOK, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership189,212 shares
Latest Disclosed Value $ 13,907,170
Sei Investments Co reports 9.60% increase in ownership of ONK / ONEOK, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 189,212 shares of ONEOK, Inc. (DE:ONK) valued at $11,793,584 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 172,642 shares of ONEOK, Inc.. This represents a change in shares of 9.60% during the quarter. The current value of the position is $14,069,804 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)
2026-02-13 2025-12-31 13F ONEOK INC COM 682680103 189,212 16,570 9.60 13,907 10.40 0.0137
2025-11-13 2025-09-30 13F ONEOK INC COM 682680103 172,642 -2,396 -1.37 12,598 -11.84 0.0135
2025-08-14 2025-06-30 13F ONEOK INC COM 682680103 175,038 -54,546 -23.76 14,288 -37.28 0.0166
2025-05-14 2025-03-31 13F/A-1 ONEOK INC COM 682680103 229,584 46,244 25.22 22,779 23.75 0.0293
2025-05-13 2025-03-31 13F ONEOK INC COM 682680103 192,164 8,824 19,224 0.0209
2025-02-11 2024-12-31 13F ONEOK INC COM 682680103 183,340 17,910 10.83 18,407 22.10 0.0236
2024-11-12 2024-09-30 13F ONEOK INC COM 682680103 165,430 17,221 11.62 15,076 24.73 0.0196
2024-08-13 2024-06-30 13F ONEOK INC COM 682680103 148,209 -84,526 -36.32 12,086 -35.22 0.0171
2024-05-07 2024-03-31 13F ONEOK INC COM 682680103 232,735 -5,751 -2.41 18,658 11.42 0.0273
2024-02-14 2023-12-31 13F ONEOK INC COM 682680103 238,486 19,798 9.05 16,746 20.73 0.0269
2023-11-14 2023-09-30 13F ONEOK INC COM 682680103 218,688 150,282 219.69 13,871 228.54 0.0249
2023-08-11 2023-06-30 13F ONEOK INC COM 682680103 68,406 -5,819 -7.84 4,222 -10.47 0.0074
2023-05-12 2023-03-31 13F ONEOK INC COM 682680103 74,225 -58,128 -43.92 4,716 -45.76 0.0088
2023-02-10 2022-12-31 13F ONEOK INC COM 682680103 132,353 44,000 49.80 8,696 92.07 0.0193
2022-11-14 2022-09-30 13F ONEOK INC COM 682680103 88,353 14,392 19.46 4,527 10.23 0.0101
2022-08-15 2022-06-30 13F ONEOK INC COM 682680103 73,961 -93,265 -55.77 4,107 -65.23 0.0089
2022-05-13 2022-03-31 13F ONEOK INC COM 682680103 167,226 139,379 500.52 11,812 620.68 0.0237
2022-02-14 2021-12-31 13F ONEOK INC COM 682680103 27,847 -44,092 -61.29 1,639 -60.71 0.0031
2021-11-12 2021-09-30 13F ONEOK INC COM 682680103 71,939 10,591 17.26 4,172 22.24 0.0088
2021-08-06 2021-06-30 13F ONEOK INC COM 682680103 61,348 17,652 40.40 3,413 54.16 0.0076
2021-05-12 2021-03-31 13F ONEOK INC COM 682680103 43,696 -112,025 -71.94 2,214 -62.96 0.0056
2021-02-08 2020-12-31 13F ONEOK INC COM 682680103 155,721 16,409 11.78 5,977 65.16 0.0155
2020-12-04 2020-09-30 13F/A-1 ONEOK INC COM 682680103 139,312 -10,328 -6.90 3,619 -27.30 0.0105
2020-11-06 2020-09-30 13F ONEOK INC COM 682680103 163,627 13,987 4,251 10,235.4628
2020-08-17 2020-06-30 13F/A-1 ONEOK INC COM 682680103 149,640 -3,195 -2.09 4,978 49.62 0.0154
2020-08-11 2020-06-30 13F ONEOK INC COM 682680103 162,805 9,970 11,073 30,036.1019
2020-05-14 2020-03-31 13F ONEOK INC COM 682680103 152,835 -4,980 -3.16 3,327 -72.07 0.0122
2020-02-06 2019-12-31 13F ONEOK INC COM 682680103 157,815 46,865 42.24 11,911 45.83 0.0355
2019-11-12 2019-09-30 13F ONEOK INC COM 682680103 110,950 19,106 20.80 8,168 29.22 0.0209
2019-08-14 2019-06-30 13F ONEOK INC COM 682680103 91,844 -9,912 -9.74 6,321 -11.05 0.0206
2019-05-15 2019-03-31 13F ONEOK INC COM 682680103 101,756 -30,344 -22.97 7,106 -16.86 0.0239
2019-02-13 2018-12-31 13F ONEOK INC COM 682680103 132,100 6,106 4.85 8,547 0.07 0.0304
2018-11-08 2018-09-30 13F ONEOK INC COM 682680103 125,994 -164,770 -56.67 8,541 -57.94 0.0310
2018-08-03 2018-06-30 13F ONEOK INC COM 682680103 290,764 92,756 46.84 20,305 80.15 0.0690
2018-05-11 2018-03-31 13F ONEOK INC COM 682680103 198,008 113,460 134.20 11,271 149.36 0.0432
2018-02-08 2017-12-31 13F ONEOK INC COM 682680103 84,548 -117,073 -58.07 4,520 -59.54 0.0157
2017-11-06 2017-09-30 13F ONEOK INC COM 682680103 201,621 57,299 39.70 11,172 48.43 0.0397
2017-07-31 2017-06-30 13F ONEOK INC COM 682680103 144,322 70,830 96.38 7,527 84.76 0.0300
2017-05-05 2017-03-31 13F ONEOK INC COM 682680103 73,492 28,155 62.10 4,074 56.51 0.0179
2017-02-02 2016-12-31 13F ONEOK INC COM 682680103 45,337 24,399 116.53 2,603 141.91 0.0126
2016-11-04 2016-09-30 13F ONEOK INC COM 682680103 20,938 4,466 27.11 1,076 37.60 0.0055
2016-08-11 2016-06-30 13F ONEOK INC COM 682680103 16,472 -1,619 -8.95 782 44.55 0.0047
2016-05-10 2016-03-31 13F/A-1 ONEOK INC COM 682680103 18,091 -253 -1.38 541 19.69 0.0034
2016-02-03 2015-12-31 13F ONEOK INC COM 682680103 18,344 3,226 21.34 452 -7.19 0.0028
2015-11-02 2015-09-30 13F/A-1 ONEOK INC COM 682680103 15,118 -3,791 -20.05 487 -34.72 0.0045
2015-10-30 2015-09-30 13F ONEOK INC COM 682680103 15,118 488
2015-08-07 2015-06-30 13F/A-1 ONEOK INC COM 682680103 18,909 -9,868 -34.29 746 -46.18 0.0067
2015-08-04 2015-06-30 13F ONEOK INC COM 682680103 18,909 -9,868 746 0.0067
2015-05-14 2015-03-31 13F/A-1 ONEOK INC COM 682680103 28,777 -16,838 -36.91 1,386 -38.92 0.0120
2015-05-01 2015-03-31 13F 1347 CAP UNIT 99/99/9999 682680103 28,777 1,386
2015-02-10 2014-12-31 13F ONEOK INC COM 682680103 45,615 45,615 2,269 0.0201
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.