ONE Gas, Inc.
US ˙ NYSE ˙ US68235P1084

SecurityOGS / ONE Gas, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,011,383 shares
Latest Disclosed Value $ 87,111,014
Dimensional Fund Advisors Lp reports 0.20% increase in ownership of OGS / ONE Gas, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,011,383 shares of ONE Gas, Inc. (US:OGS) valued at $87,110,418 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,009,318 shares of ONE Gas, Inc.. This represents a change in shares of 0.20% during the quarter. The current value of the position is $77,674,214 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)
2026-05-07 2026-03-31 13F ONE GAS COM 68235P108 1,011,383 2,065 0.20 87,111 11.72 0.0039
2026-02-12 2025-12-31 13F ONE GAS COM 68235P108 1,009,318 1,430 0.14 77,972 -4.42 0.0164
2025-11-12 2025-09-30 13F ONE GAS COM 68235P108 1,007,888 -5,985 -0.59 81,578 11.97 0.0175
2025-08-12 2025-06-30 13F ONE GAS COM 68235P108 1,013,873 819 0.08 72,856 -4.86 0.0169
2025-05-13 2025-03-31 13F ONE GAS COM 68235P108 1,013,054 48,089 4.98 76,577 14.60 0.0190
2025-02-13 2024-12-31 13F ONE GAS COM 68235P108 964,965 15,976 1.68 66,824 -5.38 0.0160
2024-11-07 2024-09-30 13F ONE GAS COM 68235P108 948,989 51,421 5.73 70,623 23.23 0.0171
2024-08-09 2024-06-30 13F ONE GAS COM 68235P108 897,568 61,192 7.32 57,308 6.18 0.0150
2024-05-10 2024-03-31 13F ONE GAS COM 68235P108 836,376 19,177 2.35 53,971 3.65 0.0146
2024-02-07 2023-12-31 13F ONE GAS COM 68235P108 817,199 47,320 6.15 52,073 -0.94 0.0152
2023-11-09 2023-09-30 13F ONE GAS COM 68235P108 769,879 66,797 9.50 52,569 -2.66 0.0172
2023-08-09 2023-06-30 13F ONE GAS COM 68235P108 703,082 11,674 1.69 54,005 -1.41 0.0172
2023-05-12 2023-03-31 13F ONE GAS COM 68235P108 691,408 39,244 6.02 54,780 111,693.88 0.0185
2023-02-09 2022-12-31 13F ONE GAS COM 68235P108 652,164 44,661 7.35 49 -99.89 0.0146
2022-11-10 2022-09-30 13F ONE GAS COM 68235P108 607,503 6,530 1.09 42,767 -12.35 0.0164
2022-08-12 2022-06-30 13F ONE GAS COM 68235P108 600,973 8,494 1.43 48,792 -6.67 0.0175
2022-05-13 2022-03-31 13F ONE GAS COM 68235P108 592,479 27,101 4.79 52,281 19.18 0.0161
2022-02-09 2021-12-31 13F ONE GAS COM 68235P108 565,378 -25,410 -4.30 43,867 17.17 0.0133
2021-11-12 2021-09-30 13F ONE GAS COM 68235P108 590,788 38,331 6.94 37,440 -8.57 0.0121
2021-08-12 2021-06-30 13F ONE GAS COM 68235P108 552,457 1,019 0.18 40,949 -3.44 0.0130
2021-05-14 2021-03-31 13F ONE GAS COM 68235P108 551,438 -29,079 -5.01 42,410 -4.84 0.0140
2021-03-08 2020-12-31 13F/A-2 ONE GAS COM 68235P108 580,517 -328 -0.06 44,565 11.18 0.0161
2021-02-11 2020-12-31 13F ONE GAS COM 68235P108 580,517 -328 44,565 16,094.5092
2020-11-12 2020-09-30 13F ONE GAS COM 68235P108 580,845 1,894 0.33 40,082 -10.14 0.0170
2020-08-13 2020-06-30 13F ONE GAS COM 68235P108 578,951 -9,723 -1.65 44,603 -9.39 0.0196
2020-05-14 2020-03-31 13F ONE GAS COM 68235P108 588,674 -9,702 -1.62 49,225 -12.08 0.0256
2020-02-14 2019-12-31 13F ONE GAS COM 68235P108 598,376 -23,315 -3.75 55,989 -6.29 0.0204
2019-11-12 2019-09-30 13F ONE GAS COM 68235P108 621,691 -38,497 -5.83 59,749 0.23 0.0232
2019-08-13 2019-06-30 13F ONE GAS COM 68235P108 660,188 -142,908 -17.79 59,614 -16.62 0.0231
2019-08-12 2019-03-31 13F/A-2 ONE GAS COM 68235P108 803,096 -26,183 -3.16 71,500 8.32 0.0285
2019-05-10 2019-03-31 13F ONE GAS COM 68235P108 803,096 -26,183 71,500
2019-02-26 2018-12-31 13F/A-1 ONE GAS COM 68235P108 829,279 -6,507 -0.78 66,008 -4.01 0.0299
2019-02-13 2018-12-31 13F ONE GAS COM 68235P108 829,279 -6,507 66,008
2018-11-13 2018-09-30 13F ONE GAS COM 68235P108 835,786 5,252 0.63 68,767 10.78 0.0262
2018-08-10 2018-06-30 13F ONE GAS COM 68235P108 830,534 2,298 0.28 62,074 13.52 0.0247
2018-05-11 2018-03-31 13F ONE GAS COM 68235P108 828,236 39,326 4.98 54,680 -5.39 0.0228
2018-02-12 2017-12-31 13F ONE GAS COM 68235P108 788,910 -98,213 -11.07 57,796 -11.53 0.0240
2017-11-13 2017-09-30 13F ONE GAS COM 68235P108 887,123 -39,847 -4.30 65,330 0.96 0.0285
2017-08-11 2017-06-30 13F ONE GAS COM 68235P108 926,970 -2,950 -0.32 64,712 2.94 0.0299
2017-05-12 2017-03-31 13F ONE GAS COM 68235P108 929,920 12,972 1.41 62,863 7.19 0.0300
2017-02-09 2016-12-31 13F ONE GAS COM 68235P108 916,948 -3,801 -0.41 58,649 3.00 0.0293
2016-11-10 2016-09-30 13F ONE GAS COM 68235P108 920,749 -42,713 -4.43 56,940 -11.24 0.0308
2016-08-09 2016-06-30 13F ONE GAS COM 68235P108 963,462 17,139 1.81 64,153 10.95 0.0369
2016-05-13 2016-03-31 13F ONE GAS COM 68235P108 946,323 27,568 3.00 57,822 25.44 0.0346
2016-02-10 2015-12-31 13F ONE GAS COM 68235P108 918,755 72,941 8.62 46,096 20.23 0.0287
2015-11-13 2015-09-30 13F ONE GAS COM 68235P108 845,814 45,226 5.65 38,340 12.52 0.0252
2015-08-14 2015-06-30 13F ONE GAS COM 68235P108 800,588 109,641 15.87 34,073 14.07 0.0209
2015-05-14 2015-03-31 13F ONE GAS COM 68235P108 690,947 205,293 42.27 29,869 49.20 0.0189
2015-02-06 2014-12-31 13F ONE GAS COM 68235P108 485,654 148,193 43.91 20,020 73.20 0.0131
2014-11-13 2014-09-30 13F ONE GAS COM 68235P108 337,461 141,928 72.59 11,559 56.60 0.0082
2014-08-08 2014-06-30 13F ONE GAS COM 68235P108 195,533 97,379 99.21 7,381 109.39 0.0051
2014-05-14 2014-03-31 13F ONE GAS COM 68235P108 98,154 98,154 3,525 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.