Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in OGS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.1M | $785.1M | +3.9% | 14.523% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.6M | $309.2M | β | 5.720% | 0.02% |
| 3 | AMERICAN CENTURY COMPANIES INC | 3.4M | $290.7M | -3.6% | 5.378% | 0.15% |
| 4 | STATE STREET CORP | 3.0M | $261.6M | +1.8% | 4.839% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.8M | $239.1M | β | 4.423% | 0.01% |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | 2.6M | $224.4M | -18.6% | 4.151% | 0.04% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1.6M | $136.2M | +6.0% | 2.519% | 0.01% |
| 8 | ALLIANCEBERNSTEIN L.P. | 1.5M | $117.1M | -10.9% | 2.415% | 0.04% |
| 9 | Energy Income Partners, LLC | 1.3M | $114.6M | +1.1% | 2.121% | 1.84% |
| 10 | EARNEST PARTNERS LLC | 1.2M | $99.3M | -2.9% | 1.837% | 0.41% |
| 11 | Boston Trust Walden Corp | 1.1M | $93.6M | -1.6% | 1.731% | 0.77% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 1.0M | $87.1M | +0.2% | 1.612% | 0.02% |
| 13 | GOLDMAN SACHS GROUP INC | 945K | $81.4M | -32.4% | 1.505% | 0.01% |
| 14 | MORGAN STANLEY | 884K | $76.1M | -11.0% | 1.408% | 0.00% |
| 15 | Qube Research & Technologies Ltd | 866K | $74.6M | +113.7% | 1.380% | 0.09% |
| 16 | Bank of New York Mellon Corp | 764K | $65.8M | +2.2% | 1.217% | 0.01% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 755K | $65.1M | -0.3% | 1.204% | 0.01% |
| 18 | NORTHERN TRUST CORP | 729K | $62.8M | +2.4% | 1.161% | 0.01% |
| 19 | FRANKLIN RESOURCES INC | 720K | $62.0M | +0.3% | 1.148% | 0.02% |
| 20 | Nuveen, LLC | 705K | $60.8M | -9.2% | 1.124% | 0.02% |
| 21 | VICTORY CAPITAL MANAGEMENT INC | 644K | $55.5M | +2.7% | 1.026% | 0.04% |
| 22 | DUFF & PHELPS INVESTMENT MANAGEMENT CO | 576K | $49.6M | 0.0% | 0.918% | 0.52% |
| 23 | FIRST TRUST ADVISORS LP | 552K | $47.6M | -7.6% | 0.880% | 0.03% |
| 24 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 529K | $45.6M | -10.5% | 0.843% | 0.33% |
| 25 | BANK OF AMERICA CORP /DE/ | 503K | $43.3M | -3.2% | 0.802% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in OGS β a direct measure of their conviction.
Filings activity in OGS during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new OGS position in Q1 2026
Institutions that fully closed their OGS position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 414 | +4.5% | 93.57% | +6.41 pp | $4.57B | +7.4% |
| Q4 2025 | 396 | +3.4% | 87.16% | 0.96 pp | $4.25B | 1.1% |
| Q3 2025 | 383 | 0.3% | 88.12% | +8.59 pp | $4.30B | +11% |
| Q2 2025 | 384 | +4.3% | 79.53% | 0.27 pp | $3.88B | 0.3% |
| Q1 2025 | 368 | +7.3% | 79.80% | +6.99 pp | $3.90B | +9.6% |
| Q4 2024 | 343 | +7.2% | 72.81% | 3.56 pp | $3.55B | 4.7% |
| Q3 2024 | 320 | 2.1% | 76.37% | +9.92 pp | $3.73B | +15% |
| Q2 2024 | 327 | β | 66.45% | β | $3.24B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying OGS stock.
Based on Q1 2026 13F filings, institutional ownership of ONE Gas, Inc. stands at 93.6%, held across 414 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of OGS, with approximately 9,115,076 shares worth $0.79B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of OGS.
Our composite Smart Money Score for OGS is 49 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
65 institutions opened new positions in OGS during Q1 2026, while 47 fully exited. 290 added to existing positions and 57 trimmed.
OGS institutional ownership rose by 6.41 percentage points quarter-over-quarter, with a net change of +18 holders.
The top 10 institutions account for 56.4% of all reported 13F value in OGS, and the top 25 account for 77.7%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
ONE Gas, Inc. (OGS) Institutional Ownership