ONEOK, Inc.
US ˙ NYSE ˙ US6826801036

SecurityOKE / ONEOK, Inc.
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership151,515 shares
Latest Disclosed Value $ 13,695,441
Mackenzie Financial Corp reports 78.38% increase in ownership of OKE / ONEOK, Inc.

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 151,515 shares of ONEOK, Inc. (US:OKE) valued at $13,695,441 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 84,940 shares of ONEOK, Inc.. This represents a change in shares of 78.38% during the quarter. The current value of the position is $13,143,926 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)
2026-05-13 2026-03-31 13F ONEOK INC COM 682680103 151,515 66,575 78.38 13,695 118.87 0.0164
2026-02-18 2025-12-31 13F ONEOK INC COM 682680103 84,940 -29,440 -25.74 6,258 -25.03 0.0074
2025-11-13 2025-09-30 13F ONEOK INC COM 682680103 114,380 10,567 10.18 8,346 -1.51 0.0101
2025-08-13 2025-06-30 13F ONEOK INC COM 682680103 103,813 4,958 5.02 8,474 -13.60 0.0110
2025-05-07 2025-03-31 13F ONEOK INC COM 682680103 98,855 3,256 3.41 9,808 2.19 0.0139
2025-05-02 2024-12-31 13F/A-2 ONEOK INC COM 682680103 95,599 2,562 2.75 9,598 13.21 0.0131
2025-02-20 2024-12-31 13F/A-1 ONEOK INC COM 682680103 95,599 2,562 9,598 0.0125
2025-02-14 2024-12-31 13F ONEOK Common Stock 682680103 95,599 2,562 9,375 0.0135
2024-11-13 2024-09-30 13F ONEOK INC COM 682680103 93,037 -16,134 -14.78 8,478 -4.76 0.0118
2024-08-14 2024-06-30 13F ONEOK INC COM 682680103 109,171 -8,032 -6.85 8,903 -5.26 0.0132
2024-05-10 2024-03-31 13F ONEOK INC COM 682680103 117,203 -32,361 -21.64 9,396 -10.53 0.0135
2024-01-30 2023-12-31 13F ONEOK INC COM 682680103 149,564 2,048 1.39 10,502 14.86 0.0158
2023-10-25 2023-09-30 13F ONEOK INC COM 682680103 147,516 -20,655 -12.28 9,143 -12.87 0.0154
2023-08-03 2023-06-30 13F ONEOK INC COM 682680103 168,171 -84,239 -33.37 10,494 -34.57 0.0159
2023-04-24 2023-03-31 13F ONEOK INC COM 682680103 252,410 25,046 11.02 16,038 7.37 0.0248
2023-02-14 2022-12-31 13F ONEOK INC COM 682680103 227,364 -123,697 -35.24 14,938 -16.96 0.0250
2022-10-07 2022-09-30 13F ONEOK Common Stock 682680103 351,061 23,342 7.12 17,988 -1.10 0.0309
2022-08-10 2022-06-30 13F ONEOK INC COM 682680103 327,719 109,819 50.40 18,188 18.18 0.0291
2022-05-13 2022-03-31 13F ONEOK INC COM 682680103 217,900 184,947 561.24 15,390 694.94 0.0206
2022-02-14 2021-12-31 13F ONEOK INC COM 682680103 32,953 -2,059 -5.88 1,936 -4.63 0.0026
2021-11-08 2021-09-30 13F ONEOK INC COM 682680103 35,012 10,748 44.30 2,030 50.37 0.0029
2021-08-11 2021-06-30 13F ONEOK INC COM 682680103 24,264 -148,555 -85.96 1,350 -84.58 0.0019
2021-05-14 2021-03-31 13F ONEOK INC COM 682680103 172,819 -300,378 -63.48 8,755 -51.79 0.0133
2021-02-10 2020-12-31 13F ONEOK INC COM 682680103 473,197 343,960 266.15 18,161 440.83 0.0392
2020-11-13 2020-09-30 13F ONEOK INC COM 682680103 129,237 -14,449 -10.06 3,358 -29.65 0.0083
2020-08-13 2020-06-30 13F ONEOK INC COM 682680103 143,686 73,303 104.15 4,773 210.94 0.0128
2020-05-14 2020-03-31 13F ONEOK INC COM 682680103 70,383 24,081 52.01 1,535 -56.19 0.0049
2020-02-13 2019-12-31 13F ONEOK INC COM 682680103 46,302 42,540 1,130.78 3,504 1,164.98 0.0086
2019-11-14 2019-09-30 13F ONEOK INC COM 682680103 3,762 3,762 277 0.0007
2019-05-15 2019-03-31 13F ONEOK INC COM 682680103 0 -70,327 -100.00 0 -100.00
2019-02-06 2018-12-31 13F ONEOK INC COM 682680103 70,327 70,327 3,794 0.0100
2018-11-15 2018-09-30 13F ONEOK INC COM 682680103 0 -5,587 -100.00 0 -100.00
2018-08-13 2018-06-30 13F ONEOK INC COM 682680103 5,587 5,587 390 0.0010
2017-08-14 2017-06-30 13F ONEOK INC COM 682680103 0 -8,127 -100.00 0 -100.00
2017-05-25 2017-03-31 13F/A-1 ONEOK INC COM 682680103 8,127 555 7.33 451 3.68 0.0026
2017-05-12 2017-03-31 13F ONEOK INC COM 682680103 8,127 451
2017-02-14 2016-12-31 13F ONEOK INC COM 682680103 7,572 7,572 435 0.0026
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.