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NGS · Natural Gas Services Group Inc · Holdings

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$30.88 -0.16 (-0.52%) At close · Oct 20
Russell 2000 member Rebalance outlook locked
Market Cap
$398.30M
Shares
12.90M
Volume · Oct 20 62.31K Avg daily vol (3M) 116.58K

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.

Use institutional holdings through the 13F API or MCP → See every holder of NGS: 13F, 13D and 13G, insiders and funds →
Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 161
Total Value: $471,841,914
Total Shares: 11,044,511
Showing 1–100 of 164 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 161 13F filers
Top Holder
8.7%
Sep 2023 → Jun 2026 · range 7.9% – 11.5%
of institutional value
Top 5
30.7%
Sep 2023 → Jun 2026 · range 30.1% – 50.5%
of institutional value
Top 10
47.9%
Sep 2023 → Jun 2026 · range 46.0% – 79.5%
of institutional value
HHI
332
Sep 2023 → Jun 2026 · range 315 – 716
Broadly held

Who Holds NGS

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 160 filers, like-for-like change +3.4%; actively managed books -0.4%; index-like books +17.3%.

Holder type Share Filers Change
Registered adviser 60.1% 78 +3.0%
Exempt adviser 1.9% 4 -34.6%
Adviser 4.5% 7 +15.6%
Bank 6.1% 15 +10.9%
Insurer 0.9% 2 -23.5%
Broker-dealer 0.1% 1 +24.3%
Benefit plan 0.2% 3 -3.2%
Non-US 1.6% 4 +29.5%
Holding company 12.4% 5 +20.1%
Unknown 12.2% 41 -5.6%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 2 holders with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F.

Conviction and Crowding

160 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
2
1.25% of filers hold it in their top 10
Mar 31, 2026: 3
Holders above 5%
1
median weight 0.001%
Mar 31, 2026: 2
Crowding
36.6%
of shares outstanding, 89th percentile
Mar 31, 2026: 38.0%
Private-fund advisers
35.1%
of shares outstanding
Institutional ownership
87.2%
90.2% of the estimated free float
Top 10 holders
48.2%
of 13F shares, Herfindahl 0.034
Active holders
-0.4%
like-for-like share change of active filers
5% stakes on record
3
0 13D, 3 13G (3 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 13.8 quarters
Under 1 year 22.2% 1 to 3 years 29.5% 3 years or more 48.3% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $87,018 (0 buying, 1 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$27.10
estimated per share
Mar 31, 2026: $26.02
Quarter-end price
$43.14
implied by 13F values
Estimated gain or loss
+59.2%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 46.3% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies NGS's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 APEI American Public Education Inc 4
2 NOA North American Construction Group Ltd. 3
3 ANGO Angiodynamics Inc 3
4 BBW Build-A-Bear Workshop Inc 3
5 NPKI NPK International Inc. 4
6 PSTL Postal Realty Trust, Inc. 3
7 LINC Lincoln Educational Services Corp 3
8 UTI Universal Technical Institute Inc 3
9 GENI Genius Sports Ltd 3
10 TKR Timken Co 3

Shareholder Targets

13F filers that own its peers but not NGS, quarter ended Jun 30, 2026

Found through its holder-overlap peers: APEI, NOA, ANGO, BBW, NPKI, PSTL, LINC, UTI, GENI, TKR, CRS, HBAN, HEI, FANG, SPG, WMB, EQIX, GOOGL, WM, PGR. 6,553 filers in all.

# Filer In peers
1 Capital World Investors Adviser, Diversified active $52,210,143,465 7 held
2 Capital Research Global Investors Adviser, Diversified active $48,507,484,640 7 held
3 Berkshire Hathaway Inc Insurer, Concentrated $37,764,088,381 1 held
4 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $34,269,709,554 16 held
5 Capital International Investors Adviser, Diversified active $27,199,872,145 4 held
6 Amundi Holding company, Index-like $22,578,544,595 11 held
7 FRANKLIN RESOURCES INC Adviser, Diversified active $17,623,552,734 18 held
8 Fisher Asset Management, LLC Adviser, Diversified active $15,230,929,888 13 held
9 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser, Diversified active $13,894,721,709 10 held
10 Jupiter Topco LLC Unknown, Diversified active $13,073,703,123 16 held

Fund Ownership of NGS by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 12.63% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.94% 379,214
Index ETFs 9.69% 1,249,550
Active ETFs 2.78% 357,922
Active funds 19.30% 2,488,834
Unclassified 3.91% 503,855
All registered funds 38.60% 4,979,375
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 78 Exempt adviser 4 Adviser 7 Bank 15 Insurer 2 Broker-dealer 1 Benefit plan 3 Non-US 4 Holding company 5 Unknown 42
Showing 100 of 164
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
BlackRock, Inc. $41,482,428 8.79% 961,577
DIMENSIONAL FUND ADVISORS LP $36,672,449 7.77% 850,080
AEGIS FINANCIAL CORP $25,231,378 5.35% 584,872
VANGUARD CAPITAL MANAGEMENT LLC $22,132,157 4.69% 513,031
TWO SIGMA INVESTMENTS, LP $17,701,636 3.75% 410,330
AMERICAN CENTURY COMPANIES INC $17,608,238 3.73% 408,165
AMERIPRISE FINANCIAL INC $16,400,576 3.48% 380,171
ROYCE & ASSOCIATES LP $15,673,581 3.32% 363,319
WEBER CAPITAL MANAGEMENT LLC /ADV $15,533,074 3.29% 479,712
First Eagle Investment Management, LLC $14,999,130 3.18% 347,685
MORGAN STANLEY $13,907,556 2.95% 322,382
GEODE CAPITAL MANAGEMENT, LLC $13,819,941 2.93% 320,351
STATE STREET CORP $13,078,149 2.77% 303,156
Pacific Ridge Capital Partners, LLC $13,072,412 2.77% 303,023
RENAISSANCE TECHNOLOGIES LLC $9,238,085 1.96% 214,142
BRIDGEWAY CAPITAL MANAGEMENT, LLC $8,587,620 1.82% 199,064
AWM Investment Company, Inc. $8,185,038 1.73% 189,732
CITADEL ADVISORS LLC $7,969,984 1.69% 184,747
MILLENNIUM MANAGEMENT LLC $7,716,494 1.64% 178,871
Phocas Financial Corp. $6,661,937 1.41% 154,426
Russell Investments Group, Ltd. $6,366,727 1.35% 147,583
RBF Capital, LLC $6,039,600 1.28% 140,000
CANNELL CAPITAL LLC $5,279,775 1.12% 122,387
Qube Research & Technologies Ltd $5,275,331 1.12% 122,284
VANGUARD PORTFOLIO MANAGEMENT LLC $5,044,662 1.07% 116,937
NORTHERN TRUST CORP $4,985,905 1.06% 115,575
BNP PARIBAS ARBITRAGE, SA $4,600,406 0.97% 106,639
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $4,317,106 0.91% 100,072
Bank of New York Mellon Corp $4,219,134 0.89% 97,801
Empowered Funds, LLC $3,870,089 0.82% 89,710
Connor, Clark & Lunn Investment Management Ltd. $3,470,871 0.74% 80,456
CROWN ADVISORS MANAGEMENT, INC. $3,451,200 0.73% 80,000
PRUDENTIAL FINANCIAL INC $3,446,454 0.73% 79,890
VANGUARD FIDUCIARY TRUST CO $3,413,754 0.72% 79,132
Uniplan Investment Counsel, Inc. $3,332,521 0.71% 77,249
RAYMOND JAMES FINANCIAL INC $3,256,508 0.69% 75,487
MARSHALL WACE, LLP $2,980,498 0.63% 69,089
NORGES BANK $2,631,540 0.56% 61,000
Trexquant Investment LP $2,449,489 0.52% 56,780
Invesco Ltd. $2,413,379 0.51% 55,943
GOLDMAN SACHS GROUP INC $2,266,876 0.48% 52,547
WHITE PINE CAPITAL LLC $2,097,251 0.44% 48,615
BANK OF AMERICA CORP /DE/ $1,998,935 0.42% 46,336
Steward Partners Investment Advisory, LLC $1,934,440 0.41% 44,841
ACADIAN ASSET MANAGEMENT LLC $1,913,000 0.41% 44,344
RICE HALL JAMES & ASSOCIATES, LLC $1,869,817 0.40% 43,343
JPMORGAN CHASE & CO $1,843,974 0.39% 42,744
D. E. Shaw & Co., Inc. $1,743,805 0.37% 40,422
Numerai GP LLC $1,735,781 0.37% 40,236
XTX Topco Ltd $1,706,187 0.36% 39,550
LSV ASSET MANAGEMENT $1,596,180 0.34% 37,000
GSA CAPITAL PARTNERS LLP $1,594,885 0.34% 36,970
FIRST TRUST ADVISORS LP $1,582,806 0.34% 36,690
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $1,484,749 0.31% 34,417
NEW YORK STATE COMMON RETIREMENT FUND $1,466,975 0.31% 34,005
Informed Momentum Co LLC $1,451,704 0.31% 33,651
UBS Group AG $1,343,422 0.28% 31,141
Calamos Advisors LLC $1,304,811 0.28% 30,246
Illumine Investment Management, LLC $1,256,204 0.27% 0
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $1,065,558 0.23% 24,700
Y-Intercept (Hong Kong) Ltd $1,042,117 0.22% 32,184
Point72 Asset Management, L.P. $1,028,112 0.22% 23,832
SEI INVESTMENTS CO $997,180 0.21% 23,115
AQR CAPITAL MANAGEMENT LLC $966,291 0.20% 22,399
STIFEL FINANCIAL CORP $929,494 0.20% 21,546
Squarepoint Ops LLC $901,065 0.19% 20,887
TrueWealth Advisors, LLC $859,365 0.18% 26,540
Jump Financial, LLC $848,002 0.18% 19,657
Creative Planning $842,653 0.18% 19,533
Nuveen, LLC $824,404 0.17% 19,110
ARTHUR M. COHEN & ASSOCIATES, LLC $813,016 0.17% 18,846
HSBC HOLDINGS PLC $799,513 0.17% 18,533
North Star Investment Management Corp. $733,380 0.16% 17,000
LAZARD ASSET MANAGEMENT LLC $727,944 0.15% 16,874
STRS OHIO $694,554 0.15% 16,100
FMR LLC $690,713 0.15% 16,011
Dynamic Technology Lab Private Ltd $689,290 0.15% 15,978
CITADEL ADVISORS LLC $664,356 0.14% 15,400
BRASADA CAPITAL MANAGEMENT, LP $647,100 0.14% 15,000
OneDigital Investment Advisors LLC $644,123 0.14% 14,931
Voleon Capital Management LP $634,632 0.13% 14,711
PRINCIPAL FINANCIAL GROUP INC $605,814 0.13% 14,043
RHUMBLINE ADVISERS $583,252 0.12% 13,520
Vanguard Global Advisers, LLC $574,322 0.12% 13,313
Kestra Advisory Services, LLC $560,820 0.12% 13,000
Quadrature Capital Ltd $531,829 0.11% 12,328
DEUTSCHE BANK AG\ $506,592 0.11% 11,743
WELLS FARGO & COMPANY/MN $473,891 0.10% 10,985
SUSQUEHANNA INTERNATIONAL GROUP, LLP $461,598 0.10% 10,700
BARCLAYS PLC $456,464 0.10% 10,581
CITIGROUP INC $455,902 0.10% 10,568
STATE OF WISCONSIN INVESTMENT BOARD $453,832 0.10% 10,520
PDT Partners, LLC $434,635 0.09% 10,075
PRICE T ROWE ASSOCIATES INC /MD/ $419,752 0.09% 9,730
R Squared Ltd $418,932 0.09% 9,711
LPL Financial LLC $418,371 0.09% 9,698
CITADEL ADVISORS LLC $409,830 0.09% 9,500
Quantbot Technologies LP $401,590 0.09% 9,309
Susquehanna Portfolio Strategies, LLC $361,168 0.08% 8,372
Aquatic Capital Management LLC $357,458 0.08% 8,286

Showing the top 100 of 164 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1084991 CUSIP 63886Q109 13F (30d) 12 filings 12 filers Visit website Investor relations