ONEOK, Inc.
DE ˙ XTRA ˙ US6826801036
74,14 € ↑1,46 (2,01%)
2026-06-03
AKTIENPREIS
SecurityDE:ONK / ONEOK, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership544,471 shares
Latest Disclosed Value $ 49,214,736
Citigroup Inc ownership in ONK / ONEOK, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 544,471 shares of ONEOK, Inc. (DE:ONK) valued at $43,993,257 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 582,959 shares of ONEOK, Inc.. This represents a change in shares of -6.60% during the quarter. The current value of the position is $40,367,080 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (ONK) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:ONK / ONEOK, Inc. Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F ONEOK INC COM 682680103 544,471 -38,488 -6.60 49,215 14.86 0.0106
2026-02-13 2025-12-31 13F ONEOK INC COM 682680103 582,959 149,050 34.35 42,847 35.33 0.0189
2025-11-10 2025-09-30 13F ONEOK INC COM 682680103 433,909 -230,309 -34.67 31,662 -41.60 0.0141
2025-08-11 2025-06-30 13F ONEOK INC COM 682680103 664,218 -57,340 -7.95 54,220 -24.27 0.0266
2025-05-12 2025-03-31 13F ONEOK INC COM 682680103 721,558 -248,955 -25.65 71,593 -26.53 0.0366
2025-02-12 2024-12-31 13F ONEOK INC COM 682680103 970,513 228,241 30.75 97,440 44.05 0.0578
2024-11-12 2024-09-30 13F ONEOK INC COM 682680103 742,272 55,145 8.03 67,643 20.72 0.0392
2024-08-12 2024-06-30 13F ONEOK INC COM 682680103 687,127 51,141 8.04 56,035 9.90 0.0359
2024-05-10 2024-03-31 13F ONEOK INC COM 682680103 635,986 110,013 20.92 50,987 38.05 0.0335
2024-02-09 2023-12-31 13F ONEOK INC COM 682680103 525,973 172,641 48.86 36,934 64.80 0.0260
2023-12-06 2023-09-30 13F/A-1 ONEOK INC COM 682680103 353,332 -39,685 -10.10 22,412 -7.61 0.0168
2023-11-09 2023-09-30 13F ONEOK INC COM 682680103 353,332 -39,685 22,412 0.0067
2023-08-10 2023-06-30 13F ONEOK INC COM 682680103 393,017 39,408 11.14 24,257 7.96 0.0159
2023-05-11 2023-03-31 13F ONEOK INC COM 682680103 353,609 41,004 13.12 22,468 9.40 0.0158
2023-02-09 2022-12-31 13F ONEOK INC COM 682680103 312,605 25,283 8.80 20,538 39.50 0.0164
2022-11-10 2022-09-30 13F ONEOK INC COM 682680103 287,322 1,601 0.56 14,723 -7.16 0.0105
2022-08-10 2022-06-30 13F ONEOK INC COM 682680103 285,721 -157,890 -35.59 15,858 -49.39 0.0118
2022-05-12 2022-03-31 13F ONEOK INC COM 682680103 443,611 -211,642 -32.30 31,333 -18.62 0.0190
2022-02-10 2021-12-31 13F ONEOK INC COM 682680103 655,253 24,044 3.81 38,503 5.19 0.0206
2021-11-10 2021-09-30 13F ONEOK INC COM 682680103 631,209 -86,209 -12.02 36,604 -8.30 0.0216
2021-08-10 2021-06-30 13F ONEOK INC COM 682680103 717,418 123,172 20.73 39,916 32.59 0.0240
2021-05-13 2021-03-31 13F ONEOK INC COM 682680103 594,246 -48,819 -7.59 30,104 21.97 0.0195
2021-02-11 2020-12-31 13F ONEOK INC COM 682680103 643,065 -138,396 -17.71 24,681 21.56 0.0146
2020-11-12 2020-09-30 13F ONEOK INC COM 682680103 781,461 10,677 1.39 20,303 -20.71 0.0132
2020-08-12 2020-06-30 13F ONEOK INC COM 682680103 770,784 130,646 20.41 25,605 83.42 0.0200
2020-05-12 2020-03-31 13F ONEOK INC COM 682680103 640,138 347,646 118.86 13,960 -36.93 0.0126
2020-02-12 2019-12-31 13F ONEOK INC COM 682680103 292,492 122,461 72.02 22,133 76.64 0.0160
2019-11-08 2019-09-30 13F ONEOK INC COM 682680103 170,031 -171,186 -50.17 12,530 -46.64 0.0099
2019-08-12 2019-06-30 13F ONEOK INC COM 682680103 341,217 120,337 54.48 23,480 52.21 0.0190
2019-05-13 2019-03-31 13F ONEOK INC COM 682680103 220,880 29,066 15.15 15,426 49.06 0.0149
2019-02-12 2018-12-31 13F ONEOK INC COM 682680103 191,814 97,111 102.54 10,349 61.22 0.0105
2018-11-13 2018-09-30 13F ONEOK INC COM 682680103 94,703 -33,897 -26.36 6,419 -28.52 0.0057
2018-08-10 2018-06-30 13F ONEOK INC COM 682680103 128,600 -173,119 -57.38 8,980 -47.71 0.0083
2018-05-11 2018-03-31 13F ONEOK INC COM 682680103 301,719 216,139 252.56 17,174 275.39 0.0141
2018-02-12 2017-12-31 13F ONEOK INC COM 682680103 85,580 -398,675 -82.33 4,575 -82.95 0.0037
2017-11-13 2017-09-30 13F ONEOK INC COM 682680103 484,255 358,143 283.99 26,832 307.91 0.0220
2017-08-11 2017-06-30 13F ONEOK INC COM 682680103 126,112 74,231 143.08 6,578 128.72 0.0059
2017-05-12 2017-03-31 13F ONEOK INC COM 682680103 51,881 -78,241 -60.13 2,876 -61.50 0.0026
2017-02-10 2016-12-31 13F ONEOK INC COM 682680103 130,122 92,044 241.72 7,470 281.90 0.0067
2016-11-10 2016-09-30 13F ONEOK INC COM 682680103 38,078 -38,622 -50.35 1,956 -46.26 0.0018
2016-08-12 2016-06-30 13F ONEOK INC COM 682680103 76,700 -44,971 -36.96 3,640 0.17 0.0037
2016-05-13 2016-03-31 13F ONEOK INC COM 682680103 121,671 61,801 103.23 3,634 146.21 0.0041
2016-02-12 2015-12-31 13F ONEOK INC COM 682680103 59,870 -244,933 -80.36 1,476 -84.96 0.0015
2015-11-13 2015-09-30 13F ONEOK INC COM 682680103 304,803 215,722 242.16 9,815 179.07 0.0092
2015-08-13 2015-06-30 13F ONEOK INC COM 682680103 89,081 5,161 6.15 3,517 -13.14 0.0031
2015-05-14 2015-03-31 13F ONEOK INC COM 682680103 83,920 57 0.07 4,049 -3.02 0.0039
2015-02-17 2014-12-31 13F ONEOK INC COM 682680103 83,863 28,516 51.52 4,175 15.08 0.0037
2014-11-14 2014-09-30 13F ONEOK INC COM 682680103 55,347 4,336 8.50 3,628 4.46 0.0032
2014-08-14 2014-06-30 13F ONEOK INC COM 682680103 51,011 -16,786 -24.76 3,473 -13.54 0.0033
2014-05-15 2014-03-31 13F ONEOK INC COM 682680103 67,797 -14,653 -17.77 4,017 -21.65 0.0041
2014-02-14 2013-12-31 13F ONEOK INC COM 682680103 82,450 -67,416 -44.98 5,127 -35.84 0.0046
2013-11-14 2013-09-30 13F ONEOK INC COM 682680103 149,866 -45,054 -23.11 7,991 -0.76 0.0075
2013-08-14 2013-06-30 13F ONEOK INC COM 682680103 194,920 194,920 8,052 0.0079
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-11 2026-03-31 13F ONEOK INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F ONEOK INC COM Call 85,000 0.00 6,248 0.73 n/a n/a n/a
2025-11-10 2025-09-30 13F ONEOK INC COM Call 85,000 0.00 6,202 -10.61 n/a n/a n/a
2025-08-11 2025-06-30 13F ONEOK INC COM Call 85,000 -77.63 6,939 -81.60 n/a n/a n/a
2025-05-12 2025-03-31 13F ONEOK INC COM Call 380,000 -61.96 37,704 -62.41 n/a n/a n/a
2025-02-12 2024-12-31 13F ONEOK INC COM Call 999,000 28.16 100,300 41.20 n/a n/a n/a
2024-11-12 2024-09-30 13F ONEOK INC COM Call 779,500 45.84 71,036 62.97 n/a n/a n/a
2024-08-12 2024-06-30 13F ONEOK INC COM Call 534,500 25.91 43,588 28.08 n/a n/a n/a
2024-05-10 2024-03-31 13F ONEOK INC COM Call 424,500 34,032 n/a n/a n/a
2021-05-13 2021-03-31 13F ONEOK INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F ONEOK INC COM Call 123,100 29.17 4,725 90.83 n/a n/a n/a
2020-11-12 2020-09-30 13F ONEOK INC COM Call 95,300 -23.52 2,476 -40.18 n/a n/a n/a
2020-08-12 2020-06-30 13F ONEOK INC COM Call 124,600 103.59 4,139 210.27 n/a n/a n/a
2020-05-12 2020-03-31 13F ONEOK INC COM Call 61,200 172.00 1,334 -21.67 n/a n/a n/a
2020-02-12 2019-12-31 13F ONEOK INC COM Call 22,500 -47.67 1,703 -46.26 n/a n/a n/a
2019-11-08 2019-09-30 13F ONEOK INC COM Call 43,000 2.14 3,169 9.39 n/a n/a n/a
2019-08-12 2019-06-30 13F ONEOK INC COM Call 42,100 -87.78 2,897 -87.96 n/a n/a n/a
2019-05-13 2019-03-31 13F ONEOK INC COM Call 344,500 263.01 24,060 369.92 n/a n/a n/a
2019-02-12 2018-12-31 13F ONEOK INC COM Call 94,900 331.36 5,120 243.39 n/a n/a n/a
2018-11-13 2018-09-30 13F ONEOK INC COM Call 22,000 -84.31 1,491 -84.77 n/a n/a n/a
2018-08-10 2018-06-30 13F ONEOK INC COM Call 140,200 -64.85 9,790 -56.88 n/a n/a n/a
2018-05-11 2018-03-31 13F ONEOK INC COM Call 398,900 78.00 22,706 89.55 n/a n/a n/a
2018-02-12 2017-12-31 13F ONEOK INC COM Call 224,100 -71.29 11,979 -72.30 n/a n/a n/a
2017-11-13 2017-09-30 13F ONEOK INC COM Call 780,600 71.22 43,253 81.89 n/a n/a n/a
2017-08-11 2017-06-30 13F ONEOK INC COM Call 455,900 56.61 23,780 47.34 n/a n/a n/a
2017-05-12 2017-03-31 13F ONEOK INC COM Call 291,100 236.14 16,139 224.66 n/a n/a n/a
2017-02-10 2016-12-31 13F ONEOK INC COM Call 86,600 -55.59 4,971 -50.39 n/a n/a n/a
2016-11-10 2016-09-30 13F ONEOK INC COM Call 195,000 93.26 10,021 109.29 n/a n/a n/a
2016-08-12 2016-06-30 13F ONEOK INC COM Call 100,900 64.87 4,788 162.07 n/a n/a n/a
2016-05-13 2016-03-31 13F ONEOK INC COM Call 61,200 -41.27 1,827 -28.91 n/a n/a n/a
2016-02-12 2015-12-31 13F ONEOK INC COM Call 104,200 -56.57 2,570 -66.73 n/a n/a n/a
2015-11-13 2015-09-30 13F ONEOK INC COM Call 239,900 851.98 7,725 676.38 n/a n/a n/a
2015-08-13 2015-06-30 13F ONEOK INC COM Call 25,200 -82.58 995 -85.74 n/a n/a n/a
2015-05-14 2015-03-31 13F ONEOK INC COM Call 144,700 -63.68 6,980 -71.82 n/a n/a n/a
2014-02-14 2013-12-31 13F ONEOK INC COM Call 398,400 -4.16 24,773 11.77 n/a n/a n/a
2013-11-14 2013-09-30 13F ONEOK INC COM Call 415,700 47.41 22,165 90.27 n/a n/a n/a
2013-08-14 2013-06-30 13F ONEOK INC COM Call 282,000 11,649 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-11 2026-03-31 13F ONEOK INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F ONEOK INC COM Put 76,000 0.00 5,586 0.74 n/a n/a n/a
2025-11-10 2025-09-30 13F ONEOK INC COM Put 76,000 0.00 5,546 -10.61 n/a n/a n/a
2025-08-11 2025-06-30 13F ONEOK INC COM Put 76,000 -90.08 6,204 -91.84 n/a n/a n/a
2025-05-12 2025-03-31 13F ONEOK INC COM Put 766,000 -52.77 76,003 -53.33 n/a n/a n/a
2025-02-12 2024-12-31 13F ONEOK INC COM Put 1,622,000 15.28 162,849 27.01 n/a n/a n/a
2024-11-12 2024-09-30 13F ONEOK INC COM Put 1,407,000 20.15 128,220 34.27 n/a n/a n/a
2024-08-12 2024-06-30 13F ONEOK INC COM Put 1,171,000 47.44 95,495 49.98 n/a n/a n/a
2024-05-10 2024-03-31 13F ONEOK INC COM Put 794,200 63,671 n/a n/a n/a
2021-05-13 2021-03-31 13F ONEOK INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F ONEOK INC COM Put 245,800 -24.62 9,435 11.35 n/a n/a n/a
2020-11-12 2020-09-30 13F ONEOK INC COM Put 326,100 -11.27 8,473 -30.59 n/a n/a n/a
2020-08-12 2020-06-30 13F ONEOK INC COM Put 367,500 -35.12 12,208 -1.17 n/a n/a n/a
2020-05-12 2020-03-31 13F ONEOK INC COM Put 566,400 175.49 12,353 -20.60 n/a n/a n/a
2020-02-12 2019-12-31 13F ONEOK INC COM Put 205,600 -7.64 15,558 -5.15 n/a n/a n/a
2019-11-08 2019-09-30 13F ONEOK INC COM Put 222,600 5.35 16,403 12.81 n/a n/a n/a
2019-08-12 2019-06-30 13F ONEOK INC COM Put 211,300 -34.56 14,540 -35.52 n/a n/a n/a
2019-05-13 2019-03-31 13F ONEOK INC COM Put 322,900 2,291.85 22,551 2,997.66 n/a n/a n/a
2019-02-12 2018-12-31 13F ONEOK INC COM Put 13,500 -0.74 728 -21.04 n/a n/a n/a
2018-11-13 2018-09-30 13F ONEOK INC COM Put 13,600 -56.27 922 -57.55 n/a n/a n/a
2018-08-10 2018-06-30 13F ONEOK INC COM Put 31,100 3.32 2,172 26.80 n/a n/a n/a
2018-05-11 2018-03-31 13F ONEOK INC COM Put 30,100 336.23 1,713 364.23 n/a n/a n/a
2018-02-12 2017-12-31 13F ONEOK INC COM Put 6,900 -77.30 369 -78.09 n/a n/a n/a
2017-11-13 2017-09-30 13F ONEOK INC COM Put 30,400 24.59 1,684 32.29 n/a n/a n/a
2017-08-11 2017-06-30 13F ONEOK INC COM Put 24,400 430.43 1,273 399.22 n/a n/a n/a
2017-05-12 2017-03-31 13F ONEOK INC COM Put 4,600 -4.17 255 -7.61 n/a n/a n/a
2017-02-10 2016-12-31 13F ONEOK INC COM Put 4,800 -97.02 276 -96.67 n/a n/a n/a
2016-11-10 2016-09-30 13F ONEOK INC COM Put 161,200 1,232.23 8,285 1,343.38 n/a n/a n/a
2016-08-12 2016-06-30 13F ONEOK INC COM Put 12,100 24.74 574 97.93 n/a n/a n/a
2016-05-13 2016-03-31 13F ONEOK INC COM Put 9,700 246.43 290 320.29 n/a n/a n/a
2016-02-12 2015-12-31 13F ONEOK INC COM Put 2,800 2,700.00 69 2,200.00 n/a n/a n/a
2015-11-13 2015-09-30 13F ONEOK INC COM Put 100 3 n/a n/a n/a
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.