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OGS · ONE Gas, Inc. · Holdings

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Market Cap
$4.97B
Shares
62.86M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 429
Total Value: $4,495,928,476
Total Shares: 58,335,653
Showing 1–100 of 431 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 429 13F filers · Δ vs Mar 31, 2026
Top Holder
15.6%
Sep 2023 → Jun 2026 · range 14.4% – 16.2%
−0.6 pts
Top 5
38.5%
Sep 2023 → Jun 2026 · range 38.5% – 47.2%
−0.4 pts
Top 10
52.5%
Sep 2023 → Jun 2026 · range 52.5% – 60.3%
−2.1 pts
HHI
457
Sep 2023 → Jun 2026 · range 457 – 589
Broadly held−28

Quarterly Activity

vs Mar 31, 2026
New
57
Increased
181
Decreased
108
Sold Out
58
Unchanged
83
Holder count: -1
Institutional value: -7.3%
Shares held: +3.6%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 431
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1587732 CUSIP 68235P108 13F (30d) 228 filings 227 filers Visit website Investor relations