Who owns ONE Gas (OGS)
Which tracked institutional funds hold OGS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OGS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
68 tracked funds added or opened OGS while 122 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
OGS’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes OGS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in OGS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 398 tracked filers holding OGS, 228 increased or opened the position and 183 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in OGS between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 14
- RENAISSANCE TECHNOLOGIES LLC$9M
- Lighthouse Investment Partners, LLC$7M
- JUPITER ASSET MANAGEMENT LTD$4M
- Quantbot Technologies LP$4M
- JOHNSON INVESTMENT COUNSEL INC$2M
- Jupiter Topco LLC$2M
Full exits 33
- T. Rowe Price Investment Management, Inc.$160M
- Clearbridge Investments, LLC$9M
- CANADA LIFE ASSURANCE Co$7M
- SG Americas Securities, LLC$7M
- TWO SIGMA INVESTMENTS, LP$7M
- NEW YORK STATE TEACHERS RETIREMENT SYSTEM$6M
Largest adds
- BlackRock, Inc.$55M
- AQR CAPITAL MANAGEMENT LLC$43M
- ExodusPoint Capital Management, LP$26M
- NORGES BANK$22M
- Energy Income Partners, LLC$21M
- Point72 Asset Management, L.P.$18M
Largest trims
- WELLINGTON MANAGEMENT GROUP LLP$174M
- Nuveen, LLC$30M
- DEUTSCHE BANK AG\$25M
- VANGUARD PORTFOLIO MANAGEMENT LLC$23M
- VANGUARD CAPITAL MANAGEMENT LLC$22M
- GOLDMAN SACHS GROUP INC$19M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 9,099,077 | $701M | 14.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 3,716,434 | $286M | 5.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 3,543,229 | $273M | 5.7% | 2026-Q2 |
| STATE STREET CORP added | 3,268,798 | $252M | 5.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,821,399 | $217M | 4.5% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,957,673 | $151M | 3.1% | 2026-Q2 |
| Energy Income Partners, LLC added | 1,763,956 | $136M | 2.8% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 1,484,889 | $128M | 2.7% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 1,119,752 | $86M | 1.8% | 2026-Q2 |
| EARNEST PARTNERS LLC trimmed | 1,110,347 | $86M | 1.8% | 2026-Q2 |
| Boston Trust Walden Corp trimmed | 1,045,444 | $81M | 1.7% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,030,076 | $79M | 1.6% | 2026-Q2 |
| MORGAN STANLEY added | 1,022,683 | $79M | 1.6% | 2026-Q2 |
| NORGES BANK added | 879,121 | $68M | 1.4% | 2026-Q2 |
| NORTHERN TRUST CORP added | 845,290 | $65M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 807,222 | $62M | 1.3% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 794,066 | $61M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 766,365 | $59M | 1.2% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 730,608 | $56M | 1.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 718,962 | $55M | 1.1% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 693,785 | $53M | 1.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 650,349 | $50M | 1.0% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 627,285 | $48M | 1.0% | 2026-Q2 |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO | 576,000 | $44M | 0.9% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 572,032 | $44M | 0.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 571,048 | $44M | 0.9% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 496,116 | $38M | 0.8% | 2026-Q2 |
| CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC added | 483,805 | $37M | 0.8% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 465,930 | $37M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 416,335 | $32M | 0.7% | 2026-Q2 |
| ProShare Advisors LLC trimmed | 405,848 | $31M | 0.6% | 2026-Q2 |
| Nuveen, LLC trimmed | 398,960 | $31M | 0.6% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 393,090 | $30M | 0.6% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 392,527 | $30M | 0.6% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 369,339 | $28M | 0.6% | 2026-Q2 |
| Invesco Ltd. added | 299,800 | $23M | 0.5% | 2026-Q2 |
| Legal & General Group Plc added | 299,768 | $23M | 0.5% | 2026-Q2 |
| FMR LLC added | 291,441 | $22M | 0.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 280,660 | $22M | 0.4% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 217,173 | $17M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 196,427 | $15M | 0.3% | 2026-Q2 |
| GABELLI FUNDS LLC | 190,800 | $15M | 0.3% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 186,454 | $14M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 182,606 | $14M | 0.3% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 174,265 | $13M | 0.3% | 2026-Q2 |
| Cerity Partners LLC added | 165,659 | $13M | 0.3% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 163,212 | $13M | 0.3% | 2026-Q2 |
| Freestone Grove Partners LP added | 161,501 | $12M | 0.3% | 2026-Q2 |
| First Eagle Investment Management, LLC added | 160,764 | $12M | 0.3% | 2026-Q2 |
| Tidal Investments LLC added | 160,107 | $12M | 0.3% | 2026-Q2 |
| UBS Group AG trimmed | 153,854 | $12M | 0.2% | 2026-Q2 |
| Crossmark Global Holdings, Inc. added | 151,342 | $12M | 0.2% | 2026-Q2 |
| BTG Pactual Asset Management US LLC added | 147,317 | $11M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 143,170 | $11M | 0.2% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC trimmed | 130,290 | $10M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 129,580 | $10M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 126,013 | $10M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 123,844 | $10M | 0.2% | 2026-Q2 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC added | 118,092 | $9M | 0.2% | 2026-Q2 |
| BOKF, NA added | 118,047 | $9M | 0.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 110,900 | $9M | 0.2% | 2026-Q2 |
| Meiji Yasuda Asset Management Co Ltd. added | 108,420 | $8M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 107,690 | $8M | 0.2% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL trimmed | 100,785 | $8M | 0.2% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed | 100,360 | $8M | 0.2% | 2026-Q2 |
| Campbell & CO Investment Adviser LLC added | 98,346 | $8M | 0.2% | 2026-Q2 |
| Lighthouse Investment Partners, LLC new | 94,726 | $7M | 0.2% | 2026-Q2 |
| Aventail Capital Group, LP added | 93,589 | $7M | 0.1% | 2026-Q2 |
| Aristotle Capital Boston, LLC trimmed | 92,979 | $7M | 0.1% | 2026-Q2 |
| NATIXIS added | 90,700 | $7M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 87,037 | $7M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 86,798 | $7M | 0.1% | 2026-Q2 |
| HENNESSY ADVISORS INC added | 83,175 | $6M | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 83,067 | $6M | 0.1% | 2026-Q2 |
| MARTINGALE ASSET MANAGEMENT L P added | 81,800 | $6M | 0.1% | 2026-Q2 |
| HEARTLAND ADVISORS INC trimmed | 75,438 | $6M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 72,050 | $6M | 0.1% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 72,044 | $6M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 71,314 | $5M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 66,291 | $5M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 63,896 | $5M | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC added | 62,364 | $5M | 0.1% | 2026-Q2 |
| Elo Mutual Pension Insurance Co added | 61,502 | $5M | 0.1% | 2026-Q2 |
| Creative Planning added | 60,127 | $5M | 0.1% | 2026-Q2 |
| Greenland Capital Management LP added | 60,070 | $5M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 59,770 | $5M | 0.1% | 2026-Q2 |
| VANGUARD GROUP INC trimmed | 6,489,014 | $501M | 10.4% | 2025-Q4 stale (2 quarters behind) |
| T. Rowe Price Investment Management, Inc. added | 1,861,962 | $160M | 3.3% | 2026-Q1 stale (1 quarter behind) |
| Verition Fund Management LLC added | 161,685 | $13M | 0.3% | 2025-Q3 stale (3 quarters behind) |
| SIR Capital Management, L.P. new | 162,523 | $13M | 0.3% | 2025-Q4 stale (2 quarters behind) |
| Clearbridge Investments, LLC trimmed | 98,722 | $9M | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Burkehill Global Management, LP new | 100,000 | $7M | 0.1% | 2025-Q2 stale (4 quarters behind) |
| CANADA LIFE ASSURANCE Co trimmed | 81,164 | $7M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| SG Americas Securities, LLC trimmed | 79,398 | $7M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| TWO SIGMA INVESTMENTS, LP added | 79,166 | $7M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Cobler Capital Management, LLC new | 91,813 | $6M | 0.1% | 2025-Q2 stale (4 quarters behind) |
| MARSHALL WACE, LLP added | 81,594 | $6M | 0.1% | 2025-Q4 stale (2 quarters behind) |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM added | 71,146 | $6M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Cubist Systematic Strategies, LLC trimmed | 67,000 | $5M | 0.1% | 2025-Q3 stale (3 quarters behind) |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 61,561 | $5M | 0.1% | 2026-Q1 stale (1 quarter behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.