OGS Institutional Ownership & Shareholders
ONE GAS INC (OGS) is currently held by 427 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $4.41B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of OGS tracked by InsiderSet, reporting ownership valued at approximately $701.27M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $714.64M, representing an estimated gain of +1.91% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed OGS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, American Century Companies Inc, and several other long-term asset managers with concentrated positions in ONE GAS INC (OGS).
This page ranks the largest institutional OGS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
427
Total Reported Value
$4.41B
Largest Holder
Blackrock, Inc.
Largest Position
$701.27M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
50
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 9,099,077 | $701,265,900 | $714,641,508 | +$13,375,608 | +1.91% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,716,434 | $286,425,568 | $291,888,726 | +$5,463,158 | +1.91% | |
| American Century Companies Inc | 0.12% | 3,543,229 | $273,076,826 | $278,285,206 | +$5,208,380 | +1.91% | |
| State Street Corp | 0.01% | 3,268,798 | $251,926,262 | $256,731,395 | +$4,805,133 | +1.91% | |
| Vanguard Capital Management Llc | 0.00% | 2,821,399 | $217,445,221 | $221,592,677 | +$4,147,456 | +1.91% | |
| Geode Capital Management, Llc | 0.01% | 1,957,673 | $150,899,947 | $153,755,637 | +$2,855,690 | +1.89% | |
| T. Rowe Price Investment Management, Inc. | 0.09% | 1,858,002 | $143,197,000 | $145,927,477 | +$2,730,477 | +1.91% | |
| Energy Income Partners, Llc | 2.14% | 1,763,956 | $135,948,088 | $138,541,104 | +$2,593,016 | +1.91% | |
| Alliancebernstein L.P. | 0.04% | 1,484,889 | $127,893,490 | $116,623,182 | -$11,270,308 | -8.81% | |
| Aqr Capital Management Llc | 0.03% | 1,119,752 | $86,299,256 | $87,945,322 | +$1,646,066 | +1.91% | |
| Earnest Partners Llc | 0.31% | 1,110,347 | $85,574,443 | $87,206,653 | +$1,632,210 | +1.91% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,030,076 | $79,393,507 | $80,902,169 | +$1,508,662 | +1.90% | |
| Morgan Stanley | 0.00% | 1,022,683 | $78,818,197 | $80,321,523 | +$1,503,326 | +1.91% | |
| Boston Trust Walden Corp | 0.58% | 998,657 | $71,773,479 | $78,434,521 | +$6,661,042 | +9.28% | |
| Norges Bank | 0.01% | 879,121 | $67,753,855 | $69,046,163 | +$1,292,308 | +1.91% | |
| Northern Trust Corp | 0.01% | 845,290 | $65,146,501 | $66,389,077 | +$1,242,576 | +1.91% | |
| Goldman Sachs Group Inc | 0.01% | 807,222 | $62,212,569 | $63,399,216 | +$1,186,647 | +1.91% | |
| Qube Research & Technologies Ltd | 0.07% | 794,066 | $61,198,667 | $62,365,944 | +$1,167,277 | +1.91% | |
| Charles Schwab Investment Management Inc | 0.01% | 766,365 | $59,063,751 | $60,190,307 | +$1,126,556 | +1.91% | |
| Bank Of New York Mellon Corp | 0.01% | 730,608 | $56,307,927 | $57,381,952 | +$1,074,025 | +1.91% | |
| Victory Capital Management Inc | 0.03% | 693,785 | $53,470,010 | $54,489,874 | +$1,019,864 | +1.91% | |
| Wellington Management Group Llp | 0.01% | 650,349 | $50,122,398 | $51,078,410 | +$956,012 | +1.91% | |
| Exoduspoint Capital Management, Lp | 0.45% | 627,285 | $48,344,855 | $49,266,964 | +$922,109 | +1.91% | |
| Duff & Phelps Investment Management Co | 0.42% | 576,000 | $44,392,320 | $45,239,040 | +$846,720 | +1.91% | |
| First Trust Advisors Lp | 0.03% | 572,032 | $44,086,491 | $44,927,393 | +$840,902 | +1.91% | |
| Bank Of America Corp | 0.00% | 571,048 | $44,010,660 | $44,850,110 | +$839,450 | +1.91% | |
| Silvercrest Asset Management Group Llc | 0.25% | 496,116 | $38,235,834 | $38,964,951 | +$729,117 | +1.91% | |
| Cbre Investment Management Listed Real Assets Llc | 0.52% | 483,805 | $37,286,852 | $37,998,045 | +$711,193 | +1.91% | |
| Jpmorgan Chase & Co | 0.00% | 465,930 | $36,879,058 | $36,594,142 | -$284,916 | -0.77% | |
| Vanguard Fiduciary Trust Co | 0.01% | 416,335 | $32,086,938 | $32,698,951 | +$612,013 | +1.91% | |
| Nuveen, Llc | 0.01% | 398,960 | $30,747,774 | $31,334,318 | +$586,544 | +1.91% | |
| Point72 Asset Management, L.P. | 0.05% | 393,090 | $30,295,446 | $30,873,289 | +$577,843 | +1.91% | |
| Rockefeller Capital Management L.P. | 0.05% | 392,527 | $30,252,117 | $30,829,071 | +$576,954 | +1.91% | |
| Massachusetts Financial Services Co | 0.01% | 369,339 | $28,464,957 | $29,007,885 | +$542,928 | +1.91% | |
| Proshare Advisors Llc | 0.04% | 352,562 | $25,338,630 | $27,690,219 | +$2,351,589 | +9.28% | |
| Invesco Ltd. | 0.00% | 299,800 | $23,105,586 | $23,546,292 | +$440,706 | +1.91% | |
| Legal & General Group Plc | 0.00% | 299,768 | $23,103,120 | $23,543,779 | +$440,659 | +1.91% | |
| Fmr Llc | 0.00% | 291,441 | $22,461,342 | $22,889,776 | +$428,434 | +1.91% | |
| D. E. Shaw & Co., Inc. | 0.01% | 280,660 | $21,630,466 | $22,043,036 | +$412,570 | +1.91% | |
| Rhumbline Advisers | 0.01% | 217,173 | $16,737,495 | $17,056,767 | +$319,272 | +1.91% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 189,893 | $16,355,485 | $14,914,196 | -$1,441,289 | -8.81% | |
| Gabelli Funds Llc | 0.09% | 190,800 | $14,704,956 | $14,985,432 | +$280,476 | +1.91% | |
| Federated Hermes, Inc. | 0.02% | 186,454 | $14,370,010 | $14,644,097 | +$274,087 | +1.91% | |
| Wells Fargo & Company/Mn | 0.00% | 182,606 | $14,073,486 | $14,341,875 | +$268,389 | +1.91% | |
| Retirement Systems Of Alabama | 0.04% | 174,265 | $13,430,604 | $13,686,773 | +$256,169 | +1.91% | |
| Cerity Partners Llc | 0.02% | 165,659 | $12,767,347 | $13,010,858 | +$243,511 | +1.91% | |
| Squarepoint Ops Llc | 0.02% | 163,212 | $12,578,749 | $12,818,670 | +$239,921 | +1.91% | |
| Freestone Grove Partners Lp | 0.08% | 161,501 | $12,446,882 | $12,684,289 | +$237,407 | +1.91% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 160,764 | $12,390,081 | $12,626,405 | +$236,324 | +1.91% |
| Tidal Investments Llc | 0.03% | 160,107 | $12,339,446 | $12,574,804 | +$235,358 | +1.91% |
Frequently asked questions about OGS
Who are the largest institutional holders of OGS?
The largest institutional holders of OGS reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Portfolio Management Llc, American Century Companies Inc, State Street Corp, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported OGS position.
What is OGS institutional ownership?
This page tracks OGS positions reported by institutional investment managers through SEC Form 13F. ONE GAS INC (OGS) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own OGS?
InsiderSet currently tracks 427 institutional managers reporting OGS holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of OGS shareholders.
How much OGS stock do institutions own?
Institutional investment managers disclosed approximately $4.41B in OGS holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was OGS institutional ownership last updated?
The latest OGS institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional OGS holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its OGS position after the reporting date.
Are institutions buying or selling OGS?
Institutional buying and selling can be analyzed by comparing OGS positions across consecutive 13F reporting periods. InsiderSet's OGS Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View OGS ownership changes.
How has OGS institutional ownership changed over time?
InsiderSet tracks OGS institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.