One Gas Inc
Ownership
Ownership Structure
Who owns One Gas Inc (OGS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.9% of the shares are freely tradable; institutional investors hold 94.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 14.50 | 9,115,076 | +3.9 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.71 | 3,589,993 | +0.0 | 03/31/2026 |
| American Century Companies Inc | 5.64 | 3,543,229 | +5.0 | 06/30/2026 |
| State Street Corp | 4.83 | 3,036,885 | +1.8 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.42 | 2,776,005 | +0.0 | 03/31/2026 |
| T. Rowe Price Investment Management,Inc. | 2.96 | 1,861,962 | -28.7 | 03/31/2026 |
| Energy Income Partners, LLC | 2.81 | 1,763,956 | +32.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.50 | 2,197,883 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 1,998,030 | +0.3 | 07/31/2026 |
| iShares Russell 2000 ETF | 2.61 | 1,637,456 | -0.6 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.