ONE Gas, Inc.
DE ˙ DB ˙ US68235P1084
67,00 € ↑1,50 (2,29%)
2026-06-03
DEL PRIS
SecurityDE:OG9 / ONE Gas, Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership1,006 shares
Latest Disclosed Value $ 77,731
Parallel Advisors, LLC ownership in OG9 / ONE Gas, Inc.

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 1,006 shares of ONE Gas, Inc. (DE:OG9) valued at $65,893 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 865 shares of ONE Gas, Inc.. This represents a change in shares of 16.30% during the quarter. The current value of the position is $67,402 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (OG9) in the form of stock options. The firm currently holds call 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:OG9 / ONE Gas, 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)
2026-02-11 2025-12-31 13F ONE GAS Stock 68235P108 1,006 141 16.30 78 10.00 0.0014
2025-11-13 2025-09-30 13F ONE GAS Stock 68235P108 865 -45 -4.95 70 7.69 0.0013
2025-07-08 2025-06-30 13F ONE GAS Stock 68235P108 910 152 20.05 65 14.04 0.0013
2025-04-08 2025-03-31 13F ONE GAS Stock 68235P108 758 -29 -3.68 57 5.56 0.0013
2025-02-10 2024-12-31 13F ONE GAS Stock 68235P108 787 7 0.90 55 -6.90 0.0012
2024-11-13 2024-09-30 13F ONE GAS Stock 68235P108 780 36 4.84 58 23.40 0.0014
2024-08-08 2024-06-30 13F ONE GAS Stock 68235P108 744 54 7.83 47 6.82 0.0012
2024-05-06 2024-03-31 13F ONE GAS Stock 68235P108 690 474 219.44 45 238.46 0.0012
2024-02-12 2023-12-31 13F ONE GAS Stock 68235P108 216 -288 -57.14 14 -61.76 0.0004
2024-05-20 2023-09-30 13F/A-1 ONE GAS Stock 68235P108 504 57 12.75 34 0.00 0.0011
2023-11-14 2023-09-30 13F ONE GAS Stock 68235P108 504 57 34 0.0011
2024-05-20 2023-06-30 13F/A-1 ONE GAS Stock 68235P108 447 -56 -11.13 34 -12.82 0.0011
2023-08-04 2023-06-30 13F ONE GAS Stock 68235P108 447 -56 34 0.0011
2024-05-20 2023-03-31 13F/A-1 ONE GAS Stock 68235P108 503 109 27.66 40 34.48 0.0013
2023-04-25 2023-03-31 13F ONE GAS Stock 68235P108 503 109 40 0.0013
2023-02-06 2022-12-31 13F ONE GAS Stock 68235P108 394 78 24.68 30 31.82 0.0013
2022-11-10 2022-09-30 13F ONE GAS Stock 68235P108 316 -26 -7.60 22 -21.43 0.0010
2022-08-01 2022-06-30 13F ONE GAS Stock 68235P108 342 16 4.91 28 -3.45 0.0013
2022-04-28 2022-03-31 13F ONE GAS Stock 68235P108 326 -285 -46.64 29 -38.30 0.0012
2022-01-20 2021-12-31 13F ONE GAS Stock 68235P108 611 368 151.44 47 213.33 0.0017
2021-11-02 2021-09-30 13F/A-1 ONE GAS Stock 68235P108 243 -7 -2.80 15 -21.05 0.0006
2021-08-06 2021-06-30 13F ONE GAS Stock 68235P108 250 116 86.57 19 90.00 0.0008
2021-04-23 2021-03-31 13F ONE GAS Stock 68235P108 134 -26 -16.25 10 -16.67 0.0005
2021-02-02 2020-12-31 13F ONE GAS Stock 68235P108 160 -189 -54.15 12 -50.00 0.0007
2020-10-27 2020-09-30 13F ONE GAS Stock 68235P108 349 -36 -9.35 24 -17.24 0.0015
2020-07-16 2020-06-30 13F ONE GAS Stock 68235P108 385 -57 -12.90 29 -19.44 0.0019
2020-04-27 2020-03-31 13F ONE GAS Stock 68235P108 442 250 130.21 36 100.00 0.0029
2020-01-30 2019-12-31 13F ONE GAS Stock 68235P108 192 -6 -3.03 18 -5.26 0.0014
2019-11-01 2019-09-30 13F ONE GAS Stock 68235P108 198 15 8.20 19 11.76 0.0016
2019-08-05 2019-06-30 13F ONE GAS Stock 68235P108 183 -83 -31.20 17 -29.17 0.0017
2019-05-01 2019-03-31 13F ONE GAS Stock 68235P108 266 46 20.91 24 41.18 0.0027
2019-02-05 2018-12-31 13F ONE GAS Stock 68235P108 220 0 0.00 17 -5.56 0.0024
2018-11-01 2018-09-30 13F ONE GAS Stock 68235P108 220 0 0.00 18 12.50 0.0022
2018-07-30 2018-06-30 13F ONE GAS Stock 68235P108 220 -9 -3.93 16 6.67 0.0023
2018-05-08 2018-03-31 13F ONE GAS Stock 68235P108 229 -70 -23.41 15 -31.82 0.0023
2018-02-13 2017-12-31 13F ONE GAS INC COM Stock 68235P108 299 0 0.00 22 -4.35 0.0036
2017-11-15 2017-09-30 13F/A-1 ONE GAS INC COM Stock 68235P108 299 0 0.00 23 4.55 0.0040
2017-08-07 2017-06-30 13F ONE GAS INC COM Stock 68235P108 299 70 30.57 22 37.50 0.0041
2017-05-12 2017-03-31 13F/A-1 ONE GAS INC COM Stock 68235P108 229 -443 -65.92 16 -62.79 0.0032
2017-05-12 2017-03-31 13F ONE GAS INC COM Stock 68235P108 229 16
2017-02-14 2016-12-31 13F ONE GAS INC COM Stock 68235P108 672 672 43 0.0101
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
(%)
2022-01-19 2021-12-31 13F ONE GAS Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F ONE GAS Stock Call 250 19 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.