Natural Gas Services Group Inc

NGS

Exchange: NYSE
Industry: Oil & Gas Field Services, NEC
SEC CIK: 0001084991

SEC filings (opens in a new tab)

No open-market purchases or sales by Natural Gas Services Group Inc insiders were filed in the last 90 days; 161 institutions reported holding it in 13F filings for Q2 2026, worth $475.2M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Natural Gas Services Group Inc changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of NGS: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	132	5	149	+22
Shares	9.82M	667.0K	10.6M	+1.41M (+15.4%)
Value	$330.5M	$22.4M	$398.7M	+$90.6M (+29.4%)

5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (34)

Institutions that held Natural Gas Services Group Inc at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to NGS in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Capital Management LLC	510,995	$19.3M	0.00%
Marshall Wace, LLP	114,282	$4.31M	0.00%
Jane Street Group, LLC	79,385	$3.00M	0.00%
Vanguard Portfolio Management LLC	78,916	$2.98M	0.00%
Vanguard Fiduciary Trust Co	74,951	$2.83M	0.00%
Walleye Capital LLC	61,270	$2.31M	0.01%
Uniplan Investment Counsel, Inc.	43,638	$1.65M	0.17%
Point72 Asset Management, L.P.	37,271	$1.41M	0.00%
Illumine Investment Management, LLC	27,985	$1.06M	0.81%
Quadrature Capital Ltd	23,869	$900.8K	0.01%
Assenagon Asset Management S.A.	21,662	$817.5K	0.00%
Jump Financial, LLC	18,981	$716.3K	0.01%
North Star Investment Management Corp.	17,000	$641.6K	0.04%
Gsa Capital Partners LLP	15,243	$575.0K	0.04%
HRT Financial LP	12,880	$486.0K	0.00%
Principal Financial Group Inc	12,725	$480.2K	0.00%
Voleon Capital Management LP	11,338	$427.9K	0.01%
Numerai GP LLC	10,554	$398.3K	0.04%
Susquehanna International Group, LLP	10,335	$390.0K	0.00%
Brevan Howard Capital Management LP	10,253	$386.9K	0.00%
Franklin Resources Inc	10,058	$379.6K	0.00%
Engineers Gate Manager LP	9,371	$353.7K	0.00%
Magnetar Financial LLC	8,980	$338.9K	0.00%
Centiva Capital, LP	8,575	$323.6K	0.02%
Quantbot Technologies LP	8,274	$312.3K	0.01%
Vanguard Global Advisers, LLC	7,630	$288.0K	0.00%
Man Group plc	6,774	$255.7K	0.00%
Mirabella Financial Services LLP	5,577	$210.5K	0.02%
Aquatic Capital Management LLC	507	$19.1K	0.00%
Root Financial Partners, LLC	58	$2.19K	0.00%
MAI Capital Management	50	$1.89K	0.00%
Fifth Third Bancorp	5	$189	0.00%
SJS Investment Consulting Inc.	2	$76	0.00%
JPL Wealth Management, LLC	2	$76	0.00%

Sold out (12)

Institutions that held Natural Gas Services Group Inc at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of NGS in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Mill Road Capital Management LLC	109,000	$3.67M
Two Sigma Advisers, LP	32,030	$1.08M
Sentinus, LLC	17,000	$572.0K
Quest Partners LLC	10,405	$350.1K
Allspring Global Investments Holdings, LLC	9,024	$310.3K
Occudo Quantitative Strategies LP	7,898	$265.8K
Intech Investment Management LLC	6,208	$208.9K
Mangrove Partners	6,199	$208.6K
Kemnay Advisory Services Inc.	3,374	$113.5K
Canada Pension Plan Investment Board	3,300	$111.0K
SG Americas Securities, LLC	3,152	$106.0K
Amalgamated Bank	319	$11.0K

Not filed for Q1 2026 yet (5)

Institutions that held Natural Gas Services Group Inc at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding NGS in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	640,540	$21.6M
Perritt Capital Management Inc	17,000	$572.0K
Brandywine Global Investment Management, LLC	9,385	$315.8K
Global Retirement Partners, LLC	41	$1.38K
Comerica Bank	5	$169