Natural Gas Services Group, Inc. (NGS) Ownership
NGS ownership summary
as of October 18, 2026- Institutions
- 94.3% of shares outstanding
- Insiders
- 3.20% of shares outstanding
- Shares outstanding
- 12.9M
- Float
- 12.6M shares available to trade
- Short interest
- 3.70% 463K shares short
- Days to cover
- 3.95 short interest up 3.2% vs prior month
- Institutions 94.33%
- Insiders 3.20%
- Other investors 2.47%
NGS top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.46% | 962K | $29.9M | +171,797 (+21.8%) | June 30, 2026 |
| 2 | Dimensional Fund Advisors, Inc. | 6.59% | 850K | $26.4M | +6,283 (+0.7%) | June 30, 2026 |
| 3 | Arnhold & S. Bleichroeder Advisers, LLC | 5.39% | 695K | $21.6M | +408,182 (+142.1%) | June 30, 2026 |
| 4 | Aegis Financial Corporation | 4.53% | 585K | $18.2M | −2,140 (−0.4%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 3.98% | 513K | $16.0M | +2,036 (+0.4%) | June 30, 2026 |
| 6 | Weber Capital Management LLC | 3.72% | 480K | $14.9M | −2,052 (−0.4%) | June 30, 2026 |
| 7 | Two Sigma Investments LLC | 3.18% | 410K | $12.8M | +45,121 (+12.4%) | June 30, 2026 |
| 8 | American Century Companies Inc | 3.16% | 408K | $12.7M | +69,143 (+20.4%) | June 30, 2026 |
| 9 | Ameriprise Financial Inc | 2.95% | 380K | $11.8M | +42,600 (+12.6%) | June 30, 2026 |
| 10 | Royce & Associates, LP | 2.82% | 363K | $11.3M | +10,003 (+2.8%) | June 30, 2026 |
| 11 | Morgan Stanley - Brokerage Accounts | 2.50% | 322K | $10.0M | +59,176 (+22.5%) | June 30, 2026 |
| 12 | Geode Capital Management, LLC | 2.48% | 320K | $10.0M | +34,538 (+12.1%) | June 30, 2026 |
| 13 | State Street Corp | 2.35% | 303K | $9.4M | +104,169 (+52.3%) | June 30, 2026 |
| 14 | Pacific Ridge Capital Partners, LLC | 2.35% | 303K | $9.4M | −2,351 (−0.8%) | June 30, 2026 |
| 15 | Renaissance Technologies Corp | 1.66% | 214K | $6.7M | −23,900 (−10.0%) | June 30, 2026 |
| 16 | Bridgeway Capital Management, LLC | 1.54% | 199K | $6.2M | −14,439 (−6.8%) | June 30, 2026 |
| 17 | Awm Investment Company Inc | 1.47% | 190K | $5.9M | −25,044 (−11.7%) | June 30, 2026 |
| 18 | Citadel Advisors Llc | 1.43% | 185K | $5.7M | −7,292 (−3.8%) | June 30, 2026 |
| 19 | Millennium Management LLC | 1.39% | 179K | $5.6M | −33,671 (−15.8%) | June 30, 2026 |
| 20 | Phocas Financial Corp | 1.20% | 154K | $4.8M | −8,039 (−4.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 11 holders added 953K shares and 9 cut 119K.
NGS top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Aegis Value I | 4.45% | 574K | $17.9M | −2,140 (−0.4%) | June 30, 2026 |
| 2 | First Eagle Small Cap Opportunity I | 3.50% | 452K | $14.1M | +47,647 (+11.8%) | September 30, 2026 |
| 3 | Avantis US Small Cap Value ETF | 3.18% | 411K | $12.8M | +648 (+0.2%) | September 30, 2026 |
| 4 | Vanguard MStar Total Stk Mkt Idx Invest | 2.91% | 375K | $11.7M | — | August 31, 2026 |
| 5 | iShares Russell 2000 ETF | 2.30% | 296K | $9.2M | −3,392 (−1.1%) | September 30, 2026 |
| 6 | Columbia Small Cap Value Discv A | 1.58% | 204K | $6.3M | +1,200 (+0.6%) | August 31, 2026 |
| 7 | DFA US Small Cap Value I | 1.41% | 182K | $5.7M | — | August 31, 2026 |
| 8 | Royce Micro-Cap Trust | 1.15% | 148K | $4.6M | — | September 30, 2026 |
| 9 | Fidelity Small Cap Index | 1.00% | 128K | $4.0M | +1,450 (+1.1%) | July 31, 2026 |
| 10 | Adara Smaller Companies | 0.93% | 120K | $3.7M | — | August 31, 2026 |
| 11 | Calamos Timpani Small Cap Growth I | 0.89% | 115K | $3.6M | −104,674 (−47.7%) | August 31, 2026 |
| 12 | Royce Micro-Cap Invmt | 0.88% | 114K | $3.5M | — | September 30, 2026 |
| 13 | DFA US Targeted Value I | 0.79% | 102K | $3.2M | — | August 31, 2026 |
| 14 | EA Bridgeway Omni Small-Cap Value ETF | 0.75% | 96K | $3.0M | — | September 30, 2026 |
| 15 | Bridgeway Omni Small-Cap Value N | 0.73% | 95K | $2.9M | — | June 30, 2026 |
| 16 | Dimensional US Targeted Value ETF | 0.72% | 93K | $2.9M | — | September 30, 2026 |
| 17 | iShares Russell 2000 Growth ETF | 0.69% | 90K | $2.8M | −113 (−0.1%) | September 30, 2026 |
| 18 | Dimensional US Small Cap Value ETF | 0.55% | 71K | $2.2M | — | September 24, 2026 |
| 19 | Vanguard Russell 2000 ETF | 0.53% | 69K | $2.1M | +909 (+1.3%) | September 30, 2026 |
| 20 | Stt Strt®SPDR®S&P®Oil &GasEqpmnt&SvcsETF | 0.52% | 67K | $2.1M | +1,034 (+1.6%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
NGS insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-06 | Stephen Charles Taylor | Sell | $37.23 | 30,000 | $1.1M |
| 2026-03-05 | Stephen Charles Taylor | Sell | $37.58 | 70,000 | $2.6M |
| 2025-12-10 | Stephen Charles Taylor | Sell | $33.16 | 10,000 | $331,600 |
| 2025-12-08 | Jean K Holley | Buy | $32.00 | 935 | $29,920 |
| 2025-12-08 | Jean K Holley | Buy | $32.04 | 2,190 | $70,168 |
| 2025-12-04 | Stephen Charles Taylor | Sell | $32.12 | 20,000 | $642,400 |
| 2025-11-19 | Stephen Charles Taylor | Sell | $30.31 | 10,000 | $303,100 |
| 2025-11-07 | Stephen Charles Taylor | Sell | $29.06 | 11,152 | $324,077 |
| 2025-11-06 | Stephen Charles Taylor | Sell | $29.00 | 100 | $2,900 |
| 2025-09-26 | Stephen Charles Taylor | Sell | $28.50 | 7,915 | $225,578 |
| 2025-09-25 | Stephen Charles Taylor | Sell | $28.50 | 759 | $21,632 |
| 2025-09-24 | Stephen Charles Taylor | Sell | $28.50 | 1,326 | $37,791 |
| 2025-09-23 | Stephen Charles Taylor | Sell | $27.95 | 11,457 | $320,223 |
| 2025-09-19 | Stephen Charles Taylor | Sell | $27.50 | 63 | $1,732 |
| 2025-09-18 | Stephen Charles Taylor | Sell | $27.50 | 1,638 | $45,045 |
| 2025-09-17 | Stephen Charles Taylor | Sell | $27.51 | 6,553 | $180,273 |
| 2025-09-16 | Stephen Charles Taylor | Sell | $27.50 | 289 | $7,948 |
| 2025-09-04 | Jean K Holley | Buy | $26.58 | 3,752 | $99,728 |
| 2025-09-04 | Stephen Charles Taylor | Sell | $27.00 | 10,000 | $270,000 |
| 2025-08-22 | Stephen Charles Taylor | Sell | $26.25 | 20,000 | $525,000 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
NGS shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns NGS
Institutional investors own 94.3% of Natural Gas Services's shares and insiders 3.20%. The largest holder is BlackRock Inc with 7.46% of the shares (962K), as of June 30, 2026. Among the top 20 institutions, 11 added shares and 9 reduced their stake in the latest filings. Short interest is 3.70% of the float, or 3.95 days of average trading volume. The share count rose 1.5% since 2014.
Related: NGS analyst forecast, NGS key metrics, NGS dividend history. See the NGS stock overview for the latest quote and news.
NGS ownership FAQ
Who owns the most Natural Gas Services stock?
The largest shareholders of Natural Gas Services are BlackRock Inc (7.46%), Dimensional Fund Advisors, Inc. (6.59%), Arnhold & S. Bleichroeder Advisers, LLC (5.39%), Aegis Financial Corporation (4.53%), Vanguard Capital Management, LLC (3.98%).
What percentage of Natural Gas Services is owned by institutions?
Institutions hold 94.3% of Natural Gas Services's shares outstanding; insiders hold 3.20%.
Which funds own Natural Gas Services?
The largest fund holders of Natural Gas Services are Aegis Value I (4.45%), First Eagle Small Cap Opportunity I (3.50%), Avantis US Small Cap Value ETF (3.18%), Vanguard MStar Total Stk Mkt Idx Invest (2.91%), iShares Russell 2000 ETF (2.30%).
What is Natural Gas Services's short interest?
463K shares of Natural Gas Services were sold short, 3.70% of the float; at the average daily volume it would take 3.95 days to cover.
Are insiders buying or selling Natural Gas Services?
Of the latest 20 reported insider transactions in Natural Gas Services (since August 22, 2025), 3 were purchases and 17 were sales.
How many shares of Natural Gas Services are outstanding?
Natural Gas Services has 12.9M shares outstanding, of which 12.6M are in the public float.