Natural GAS Services Group Inc: which funds bought and sold

Institutions that bought and sold Natural GAS Services Group shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 94 institutions that filed 13F reports for both quarters added to or opened positions in Natural GAS Services Group, and 54 cut or closed them. Together they added a net 667K shares, +6.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 376K shares (+12.5%); index fund managers were net buyers of 392K shares (+19.0%). 24 opened a new position and 14 sold out entirely.

Bought, Q2 2026 94 institutions, 24 of them new holders Sold, Q2 2026 54 institutions, 14 of them sold out

Net change, all compared +667K shares (+6.3%)

Net change, active managers +376K shares (+12.5%), 23 bought, 15 sold

Buyers versus sellers

institutions compared, 170

94 bought 22 54 sold

Active managers and hedge funds 23 bought · 15 sold · +376K

Index fund managers 9 bought · 0 sold · +392K

Other institutions 62 bought · 39 sold · −101K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
First Eagle Investment Management, LLC Active manager	+408K +142.1%	695K	$30M
Blackrock, Inc. Index funds	+172K +21.8%	962K	$41.5M
State Street Corp Index funds	+104K +52.3%	303K	$13.1M
American Century Companies Inc Active manager	+69K +20.4%	408K	$17.6M
Morgan Stanley	+59K +22.5%	322K	$13.9M
Two Sigma Investments, LP Hedge fund	+45K +12.4%	410K	$17.7M
Ameriprise Financial Inc	+43K +12.6%	380K	$16.4M
Xtx Topco Ltd	+40K New position	40K	$1.7M
Vanguard Portfolio Management LLC Index funds	+38K +48.2%	117K	$5M
LSV Asset Management Active manager	+37K New position	37K	$1.6M
Geode Capital Management, LLC Index funds	+35K +12.1%	320K	$13.8M
Uniplan Investment Counsel, Inc.	+34K +77.0%	77K	$3.3M
Northern Trust Corp Index funds	+31K +36.6%	116K	$5M
Numerai Gp LLC	+30K +281.2%	40K	$1.7M
Acadian Asset Management LLC Active manager	+28K +166.2%	44K	$1.9M
BNP Paribas Financial Markets	+25K +30.6%	107K	$4.6M
Nomura Asset Management International Inc.	+25K New position	25K	$1.1M
Gsa Capital Partners LLP	+22K +142.5%	37K	$1.6M
Trexquant Investment LP Hedge fund	+17K +42.4%	57K	$2.4M
Dynamic Technology Lab Private Ltd	+16K New position	16K	$689,000

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
First Eagle Investment Management, LLC Active manager	+408K +142.1%	695K	$30M
American Century Companies Inc Active manager	+69K +20.4%	408K	$17.6M
Two Sigma Investments, LP Hedge fund	+45K +12.4%	410K	$17.7M
LSV Asset Management Active manager	+37K New position	37K	$1.6M
Acadian Asset Management LLC Active manager	+28K +166.2%	44K	$1.9M
Trexquant Investment LP Hedge fund	+17K +42.4%	57K	$2.4M
Squarepoint Ops LLC Hedge fund	+11K +105.9%	21K	$901,065
Royce & Associates LP Active manager	+10K +2.8%	363K	$15.7M
Los Angeles Capital Management LLC Active manager	+7,825 New position	7,825	$337,571
Jacobs Levy Equity Management, Inc Active manager	+6,580 New position	6,580	$283,861

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Jane Street Group, LLC	−79K Sold out	0	—
Cannell Capital LLC	−69K −36.2%	122K	$5.3M
Qube Research & Technologies Ltd Hedge fund	−60K −33.0%	122K	$5.3M
Walleye Capital LLC Hedge fund	−53K −86.9%	7,998	$345,034
Bank Of America Corp	−50K −51.7%	46K	$2M
Marshall Wace, LLP Hedge fund	−45K −39.5%	69K	$3M
White Pine Capital LLC	−41K −45.9%	49K	$2.1M
Millennium Management LLC Hedge fund	−34K −15.8%	179K	$7.7M
Simplex Trading, LLC	−33K Sold out	0	—
Russell Investments Group, Ltd.	−32K −17.8%	148K	$6.4M
Prudential Financial Inc	−30K −27.4%	80K	$3.4M
Illumine Investment Management, LLC	−28K Sold out	0	—
Awm Investment Company, Inc.	−25K −11.7%	190K	$8.2M
Renaissance Technologies LLC Hedge fund	−24K −10.0%	214K	$9.2M
UBS Group AG	−24K −43.1%	31K	$1.3M
Sei Investments Co	−23K −49.4%	23K	$997,178
Assenagon Asset Management S.A.	−22K Sold out	0	—
State Of Wyoming	−18K −95.5%	834	$35,979
Bridgeway Capital Management, LLC Active manager	−14K −6.8%	199K	$8.6M
Point72 Asset Management, L.P. Hedge fund	−13K −36.1%	24K	$1M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Qube Research & Technologies Ltd Hedge fund	−60K −33.0%	122K	$5.3M
Walleye Capital LLC Hedge fund	−53K −86.9%	7,998	$345,034
Marshall Wace, LLP Hedge fund	−45K −39.5%	69K	$3M
Millennium Management LLC Hedge fund	−34K −15.8%	179K	$7.7M
Renaissance Technologies LLC Hedge fund	−24K −10.0%	214K	$9.2M
Bridgeway Capital Management, LLC Active manager	−14K −6.8%	199K	$8.6M
Point72 Asset Management, L.P. Hedge fund	−13K −36.1%	24K	$1M
Quadrature Capital Ltd Hedge fund	−12K −48.4%	12K	$531,830
Brevan Howard Capital Management LP Hedge fund	−10K Sold out	0	—
Franklin Resources Inc Active manager	−10K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Xtx Topco Ltd	40K	$1.7M
LSV Asset ManagementActive manager	37K	$1.6M
Nomura Asset Management International Inc.	25K	$1.1M
Dynamic Technology Lab Private Ltd	16K	$689,000
Onedigital Investment Advisors LLC	15K	$644,123
Susquehanna Portfolio Strategies, LLC	8,372	$361,168
Los Angeles Capital Management LLCActive manager	7,825	$337,571
Y-Intercept (Hong Kong) Ltd	7,793	$336,190
Jacobs Levy Equity Management, IncActive manager	6,580	$283,861
Alliancebernstein L.P.Active manager	6,320	$238,517

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Jane Street Group, LLC	79K	$3M
Simplex Trading, LLC	33K	$1.3M
Illumine Investment Management, LLC	28K	$1.1M
Assenagon Asset Management S.A.	22K	$817,524
HRT Financial LP	13K	$486,000
Brevan Howard Capital Management LPHedge fund	10K	$386,948
Franklin Resources IncActive manager	10K	$379,589
Magnetar Financial LLCHedge fund	8,980	$338,906
Mirabella Financial Services LLP	5,577	$210,476
Sound Income Strategies, LLC	201	$7,525

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 158
Ten largest holders: 49.8%
Index fund managers: 21.7%
Active managers and hedge funds: 29.8%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	23	15	6	3	+376K	+12.5%
Index fund managers	9	0	0	0	+392K	+19.0%
Other institutions	62	39	18	11	−101K	−1.8%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Natural GAS Services Group.

Only managers that filed a holdings report for both quarters are compared (170 here). 4 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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