Ranked by reported Q2 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 | $701.3M | -0.2% | 14.498% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.7M | $286.4M | +3.5% | 5.921% | 0.01% |
| 3 | AMERICAN CENTURY COMPANIES INC | 3.5M | $273.1M | +5.0% | 5.646% | 0.12% |
| 4 | STATE STREET CORP | 3.3M | $251.9M | +7.6% | 5.208% | 0.00% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.8M | $217.4M | +1.6% | 4.495% | 0.00% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 2.0M | $150.9M | +23.8% | 3.119% | 0.01% |
| 7 | Energy Income Partners, LLC | 1.8M | $135.9M | +32.5% | 2.811% | 2.14% |
| 8 | ALLIANCEBERNSTEIN L.P. | 1.5M | $127.9M | -2.0% | 2.366% | 0.04% |
| 9 | AQR CAPITAL MANAGEMENT LLC | 1.1M | $86.3M | +121.2% | 1.784% | 0.03% |
| 10 | EARNEST PARTNERS LLC | 1.1M | $85.6M | -3.7% | 1.769% | 0.31% |
| 11 | Boston Trust Walden Corp | 1.0M | $80.6M | -3.8% | 1.666% | 0.61% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 1.0M | $79.4M | +1.8% | 1.641% | 0.01% |
| 13 | MORGAN STANLEY | 1.0M | $78.8M | +15.7% | 1.629% | 0.00% |
| 14 | NORGES BANK | 879K | $67.8M | — | 1.401% | 0.01% |
| 15 | NORTHERN TRUST CORP | 845K | $65.1M | +16.0% | 1.347% | 0.01% |
| 16 | GOLDMAN SACHS GROUP INC | 807K | $62.2M | -14.6% | 1.286% | 0.01% |
| 17 | Qube Research & Technologies Ltd | 794K | $61.2M | -8.3% | 1.265% | 0.06% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 766K | $59.1M | +1.4% | 1.221% | 0.01% |
| 19 | Bank of New York Mellon Corp | 731K | $56.3M | -4.4% | 1.164% | 0.01% |
| 20 | FRANKLIN RESOURCES INC | 719K | $55.4M | -0.2% | 1.145% | 0.01% |
| 21 | VICTORY CAPITAL MANAGEMENT INC | 694K | $53.5M | +7.7% | 1.105% | 0.03% |
| 22 | WELLINGTON MANAGEMENT GROUP LLP | 650K | $50.1M | -75.0% | 1.036% | 0.01% |
| 23 | ExodusPoint Capital Management, LP | 627K | $48.3M | +146.3% | 1.000% | 0.31% |
| 24 | DUFF & PHELPS INVESTMENT MANAGEMENT CO | 576K | $44.4M | 0.0% | 0.918% | 0.21% |
| 25 | FIRST TRUST ADVISORS LP | 572K | $44.1M | +3.6% | 0.911% | 0.03% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in OGS — a direct measure of their conviction.
Filings activity in OGS during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new OGS position in Q2 2026
Institutions that fully closed their OGS position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 430 | +1.7% | 92.69% | +3.24 pp | $4.32B | 6.5% |
| Q1 2026 | 423 | +6.8% | 89.45% | 0.50 pp | $4.61B | +8.5% |
| Q4 2025 | 396 | +3.1% | 89.95% | 2.76 pp | $4.25B | 1.1% |
| Q3 2025 | 384 | +0.0% | 92.71% | 2.02 pp | $4.30B | +11% |
| Q2 2025 | 384 | +4.3% | 94.73% | +3.80 pp | $3.88B | 0.3% |
| Q1 2025 | 368 | +7.3% | 90.93% | +0.51 pp | $3.90B | +9.6% |
| Q4 2024 | 343 | +7.2% | 90.42% | 4.96 pp | $3.55B | 4.7% |
| Q3 2024 | 320 | — | 95.38% | — | $3.73B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying OGS stock.
Based on Q2 2026 13F filings, institutional ownership of ONE Gas, Inc. stands at 92.7%, held across 430 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of OGS, with approximately 9,099,077 shares worth $0.70B as of Q2 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 48 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
53 institutions opened new positions in OGS during Q2 2026, while 47 fully exited. 101 added to existing positions and 267 trimmed.
OGS institutional ownership rose by 3.24 percentage points quarter-over-quarter, with a net change of +7 holders.
The top 10 institutions account for 53.7% of all reported 13F value in OGS, and the top 25 account for 74.7%.
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