원가스(주)
MX ˙ BMV ˙ US68235P1084
SecurityMX:OGS / ONE Gas, Inc.
InstitutionMariner, LLC
Latest Disclosed Ownership35,193 shares
Latest Disclosed Value $ 3,031,203
Mariner, LLC reports 180.87% increase in ownership of OGS / ONE Gas, Inc.

On May 13, 2026 - Mariner, LLC filed a 13F-HR form disclosing ownership of 35,193 shares of ONE Gas, Inc. (MX:OGS) valued at $3,031,203 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 12,530 shares of ONE Gas, Inc.. This represents a change in shares of 180.87% during the quarter.

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 ONE GAS COM 68235P108 35,193 22,663 180.87 3,031 213.44 0.0029
2026-02-13 2025-12-31 13F ONE GAS COM 68235P108 12,530 -2,455 -16.38 968 -20.21 0.0012
2025-11-14 2025-09-30 13F ONE GAS COM 68235P108 14,985 918 6.53 1,213 20.00 0.0016
2025-08-14 2025-06-30 13F ONE GAS COM 68235P108 14,067 577 4.28 1,011 -0.88 0.0015
2025-05-15 2025-03-31 13F ONE GAS COM 68235P108 13,490 -1,444 -9.67 1,020 -1.45 0.0017
2025-02-13 2024-12-31 13F ONE GAS COM 68235P108 14,934 -244 -1.61 1,034 -8.41 0.0017
2024-11-13 2024-09-30 13F ONE GAS COM 68235P108 15,178 -358 -2.30 1,130 13.93 0.0020
2024-08-13 2024-06-30 13F ONE GAS COM 68235P108 15,536 30 0.19 992 -0.90 0.0019
2024-05-15 2024-03-31 13F ONE GAS COM 68235P108 15,506 356 2.35 1,001 3.63 0.0021
2024-02-14 2023-12-31 13F ONE GAS COM 68235P108 15,150 -2,843 -15.80 965 -21.42 0.0023
2023-11-13 2023-09-30 13F ONE GAS COM 68235P108 17,993 442 2.52 1,229 -8.90 0.0033
2023-08-11 2023-06-30 13F ONE GAS COM 68235P108 17,551 -1,356 -7.17 1,348 134,700.00 0.0036
2023-05-15 2023-03-31 13F ONE GAS COM 68235P108 18,907 -3,595 -15.98 1 -99.94 0.0044
2023-02-14 2022-12-31 13F ONE GAS COM 68235P108 22,502 -36 -0.16 1,704 7.44 0.0055
2022-11-10 2022-09-30 13F ONE GAS COM 68235P108 22,538 386 1.74 1,586 -11.84 0.0063
2022-08-15 2022-06-30 13F ONE GAS COM 68235P108 22,152 3,218 17.00 1,799 7.66 0.0074
2022-05-13 2022-03-31 13F ONE GAS COM 68235P108 18,934 4,335 29.69 1,671 47.48 0.0063
2022-02-14 2021-12-31 13F ONE GAS COM 68235P108 14,599 -3,238 -18.15 1,133 0.27 0.0048
2021-11-15 2021-09-30 13F ONE GAS COM 68235P108 17,837 -584 -3.17 1,130 -17.22 0.0059
2021-08-24 2021-06-30 13F ONE GAS COM 68235P108 18,421 5,072 38.00 1,365 32.91 0.0085
2021-05-07 2021-03-31 13F ONE GAS COM 68235P108 13,349 391 3.02 1,027 3.22 0.0072
2021-02-16 2020-12-31 13F ONE GAS COM 68235P108 12,958 2,092 19.25 995 32.67 0.0076
2020-11-13 2020-09-30 13F ONE GAS COM 68235P108 10,866 -411 -3.64 750 -13.69 0.0071
2020-08-14 2020-06-30 13F ONE GAS COM 68235P108 11,277 654 6.16 869 -2.14 0.0087
2020-05-14 2020-03-31 13F ONE GAS COM 68235P108 10,623 -745 -6.55 888 -16.54 0.0111
2020-02-13 2019-12-31 13F ONE GAS COM 68235P108 11,368 -172 -1.49 1,064 -4.06 0.0110
2019-11-13 2019-09-30 13F ONE GAS COM 68235P108 11,540 1,872 19.36 1,109 27.03 0.0133
2019-08-14 2019-06-30 13F ONE GAS COM 68235P108 9,668 -105 -1.07 873 0.34 0.0104
2019-05-15 2019-03-31 13F ONE GAS COM 68235P108 9,773 4,141 73.53 870 94.20 0.0124
2019-02-13 2018-12-31 13F ONE GAS COM 68235P108 5,632 -812 -12.60 448 -15.47 0.0080
2018-11-14 2018-09-30 13F ONE GAS COM 68235P108 6,444 -437 -6.35 530 3.11 0.0136
2018-08-14 2018-06-30 13F ONE GAS COM 68235P108 6,881 3,648 112.84 514 141.31 0.0146
2018-05-15 2018-03-31 13F ONE GAS COM 68235P108 3,233 -2,801 -46.42 213 -51.81 0.0076
2018-02-09 2017-12-31 13F ONE GAS COM 68235P108 6,034 129 2.18 442 1.61 0.0171
2017-11-14 2017-09-30 13F ONE GAS COM 68235P108 5,905 5 0.08 435 5.58 0.0197
2017-08-11 2017-06-30 13F ONE GAS COM 68235P108 5,900 -117 -1.94 412 1.23 0.0194
2017-05-15 2017-03-31 13F ONE GAS COM 68235P108 6,017 2,273 60.71 407 70.29 0.0177
2017-02-14 2016-12-31 13F ONE GAS COM 68235P108 3,744 117 3.23 239 6.70 0.0110
2016-11-14 2016-09-30 13F ONE GAS COM 68235P108 3,627 -6,384 -63.77 224 -66.42 0.0108
2016-08-12 2016-06-30 13F ONE GAS COM 68235P108 10,011 -162 -1.59 667 7.23 0.0361
2016-05-13 2016-03-31 13F ONE GAS COM 68235P108 10,173 -4,293 -29.68 622 -14.33 0.0369
2016-02-16 2015-12-31 13F ONE GAS COM 68235P108 14,466 -6,355 -30.52 726 -23.09 0.0466
2015-11-16 2015-09-30 13F ONE GAS COM 68235P108 20,821 1,746 9.15 944 16.26 0.0419
2015-08-17 2015-06-30 13F ONE GAS COM 68235P108 19,075 -20,954 -52.35 812 -53.06 0.0377
2015-05-15 2015-03-31 13F ONE GAS COM 68235P108 40,029 986 2.53 1,730 7.52 0.1471
2015-02-13 2014-12-31 13F ONE GAS COM 68235P108 39,043 33,048 551.26 1,609 684.88 0.1448
2014-11-13 2014-09-30 13F ONE GAS COM 68235P108 5,995 -385 -6.03 205 -14.94 0.0231
2014-08-21 2014-06-30 13F ONE GAS COM 68235P108 6,380 -23 -0.36 241 4.78 0.0267
2014-05-08 2014-03-31 13F ONE GAS COM 68235P108 6,403 6,403 230 0.0296
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.