원가스(주)
MX ˙ BMV ˙ US68235P1084
SecurityMX:OGS / ONE Gas, Inc.
InstitutionWellington Management Group Llp
Latest Disclosed Ownership2,605,332 shares
Ownership 4.20%
Wellington Management Group Llp ownership in OGS / ONE Gas, Inc.

2026-05-15 - Wellington Management Group Llp has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,605,332 shares of ONE Gas, Inc. (MX:OGS). This represents 4.2 percent ownership of the company. In their previous filing dated 2024-11-08 , Wellington Management Group Llp had reported owning 3,470,618 shares, indicating a decrease of -24.93 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2026-05-15 2026-05-15 13G/A 3,470,618 2,605,332 -24.93 4.20 -31.48
2024-11-08 2024-11-08 13G 3,470,618 6.13

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-15 2026-03-31 13F ONE GAS COM 68235P108 2,605,303 -594,653 -18.58 224,395 -9.22 0.0059
2026-02-17 2025-12-31 13F ONE GAS COM 68235P108 3,199,956 -991,139 -23.65 247,197 -27.13 0.0433
2025-11-14 2025-09-30 13F ONE GAS COM 68235P108 4,191,095 -143,122 -3.30 339,227 8.92 0.0594
2025-08-14 2025-06-30 13F ONE GAS COM 68235P108 4,334,217 936,291 27.55 311,457 21.26 0.0565
2025-05-13 2025-03-31 13F ONE GAS COM 68235P108 3,397,926 33,210 0.99 256,849 10.23 0.0494
2025-02-12 2024-12-31 13F ONE GAS COM 68235P108 3,364,716 -105,902 -3.05 233,007 -9.79 0.0427
2024-11-14 2024-09-30 13F ONE GAS COM 68235P108 3,470,618 645,566 22.85 258,283 43.19 0.0452
2024-08-14 2024-06-30 13F ONE GAS COM 68235P108 2,825,052 89,720 3.28 180,380 2.19 0.0322
2024-05-15 2024-03-31 13F ONE GAS COM 68235P108 2,735,332 1,180,126 75.88 176,511 78.12 0.0313
2024-02-12 2023-12-31 13F ONE GAS COM 68235P108 1,555,206 52,740 3.51 99,098 -3.40 0.0185
2023-11-14 2023-09-30 13F ONE GAS COM 68235P108 1,502,466 43,678 2.99 102,588 -8.44 0.0206
2023-08-14 2023-06-30 13F ONE GAS COM 68235P108 1,458,788 456,552 45.55 112,050 41.11 0.0212
2023-05-12 2023-03-31 13F ONE GAS COM 68235P108 1,002,236 383,693 62.03 79,407 69.54 0.0157
2023-02-13 2022-12-31 13F ONE GAS COM 68235P108 618,543 98,438 18.93 46,836 27.93 0.0094
2022-11-14 2022-09-30 13F ONE GAS COM 68235P108 520,105 124,425 31.45 36,610 13.96 0.0078
2022-08-15 2022-06-30 13F ONE GAS COM 68235P108 395,680 16,552 4.37 32,125 -3.97 0.0065
2022-05-16 2022-03-31 13F ONE GAS COM 68235P108 379,128 379,128 33,454 0.0057
2018-08-14 2018-06-30 13F ONE GAS COM 68235P108 0 -10,232 -100.00 0 -100.00
2018-05-15 2018-03-31 13F ONE GAS COM 68235P108 10,232 -13,513 -56.91 675 -61.18 0.0002
2018-02-13 2017-12-31 13F ONE GAS COM 68235P108 23,745 0 0.00 1,739 -0.57 0.0004
2017-11-13 2017-09-30 13F ONE GAS COM 68235P108 23,745 3,376 16.57 1,749 23.00 0.0004
2017-08-14 2017-06-30 13F ONE GAS COM 68235P108 20,369 -27,954 -57.85 1,422 -56.46 0.0003
2017-05-11 2017-03-31 13F ONE GAS COM 68235P108 48,323 -242 -0.50 3,266 5.15 0.0008
2017-02-14 2016-12-31 13F ONE GAS COM 68235P108 48,565 -22,384 -31.55 3,106 -29.20 0.0008
2016-11-14 2016-09-30 13F ONE GAS COM 68235P108 70,949 -1,302 -1.80 4,387 -8.83 0.0011
2016-08-15 2016-06-30 13F ONE GAS COM 68235P108 72,251 42,809 145.40 4,812 167.48 0.0012
2016-05-13 2016-03-31 13F ONE GAS COM 68235P108 29,442 -5,667 -16.14 1,799 2.10 0.0005
2016-02-12 2015-12-31 13F ONE GAS COM 68235P108 35,109 20,680 143.32 1,762 169.01 0.0005
2015-11-16 2015-09-30 13F ONE GAS COM 68235P108 14,429 0 0.00 655 6.68 0.0002
2015-08-14 2015-06-30 13F ONE GAS COM 68235P108 14,429 2,231 18.29 614 16.51 0.0002
2015-05-15 2015-03-31 13F ONE GAS COM 68235P108 12,198 12,198 527 0.0001
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.