Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Arq, Inc.

CIK 0001515156ARQ· quarter ending 2026-06-30

Shares outstanding

43,668,483

as of 2026-08-06 · 10-Q cover page, filed 2026-08-10

Held by 13F filers

15,502,988

35.5% of shares outstanding

Holders

+3 vs 2026-03-31 · 26 new, 23 exited

Value

$39.5M

shares +5.7% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-10, as of 2026-08-06)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ARQ · NASDAQ	43,668,483	15,502,988	35.5%	99	00770C101

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	00770C101	COM	99	15,502,988	43,668,483	35.5%	$39.5M	1 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (99 of 99 · 00770C101)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	ROYCE & ASSOCIATES LP	1,862,764	4.27%	$4.8M	+114,320 (+6.5%)
2	AQR CAPITAL MANAGEMENT LLC	1,814,114	4.15%	$4.6M	+728,404 (+67.1%)
3	VANGUARD CAPITAL MANAGEMENT LLC	1,464,532	3.35%	$3.7M	+33,082 (+2.3%)
4	MARSHALL WACE, LLP	880,201	2.02%	$2.2M	+70,496 (+8.7%)
5	Peapod Lane Capital LLC	787,880	1.80%	$2.0M	+12,531 (+1.6%)
6	DIMENSIONAL FUND ADVISORS LP	607,420	1.39%	$1.5M	-154,770 (-20.3%)
7	RENAISSANCE TECHNOLOGIES LLC	598,059	1.37%	$1.5M	+187,489 (+45.7%)
8	JANE STREET GROUP, LLC	509,225	1.17%	$1.3M	+319,335 (+168.2%)
9	BlackRock, Inc.	508,965	1.17%	$1.3M	-1,588,557 (-75.7%)
10	DCF Advisers, LLC	461,585	1.06%	$1.2M	+133,782 (+40.8%)
11	Truffle Hound Capital, LLC	420,000	0.96%	$1.1M	NEW
12	GEODE CAPITAL MANAGEMENT, LLC	399,518	0.91%	$1.0M	-401,713 (-50.1%)
13	Round Rock Advisors LLC	378,979	0.87%	$966K	+188,271 (+98.7%)
14	RBF Capital, LLC	370,000	0.85%	$944K	NEW
15	D. E. Shaw & Co., Inc.	358,479	0.82%	$914K	+76,651 (+27.2%)
16	GSA CAPITAL PARTNERS LLP	347,700	0.80%	$887K	+58,542 (+20.2%)
17	JACOBS LEVY EQUITY MANAGEMENT, INC	328,988	0.75%	$839K	-22,200 (-6.3%)
18	Marex Group Ltd	260,848	0.60%	$665K	+200,848 (+334.7%)
19	TWO SIGMA INVESTMENTS, LP	251,777	0.58%	$642K	+223,077 (+777.3%)
20	BANK OF AMERICA CORP /DE/	231,490	0.53%	$590K	+27,720 (+13.6%)
21	VANGUARD FIDUCIARY TRUST CO	211,100	0.48%	$538K	+7,563 (+3.7%)
22	Connor, Clark & Lunn Investment Management Ltd.	181,789	0.42%	$464K	NEW
23	CITADEL ADVISORS LLC	163,201	0.37%	$416K	NEW
24	Rangeley Capital, LLC	157,000	0.36%	$400K	NEW
25	STATE STREET CORP	153,987	0.35%	$393K	-410,611 (-72.7%)
26	UBS Group AG	136,045	0.31%	$347K	+123,096 (+950.6%)
27	GOLDMAN SACHS GROUP INC	120,400	0.28%	$307K	-20,526 (-14.6%)
28	Marquette Asset Management, LLC	106,741	0.24%	$272K	NEW
29	Qube Research & Technologies Ltd	93,008	0.21%	$237K	NEW
30	NORTHERN TRUST CORP	77,788	0.18%	$198K	-150,568 (-65.9%)
31	Corient Private Wealth LP	77,525	0.18%	$198K	+25 (+0.0%)
32	AMERIPRISE FINANCIAL INC	75,796	0.17%	$193K	—
33	BRIDGEWAY CAPITAL MANAGEMENT, LLC	74,780	0.17%	$191K	—
34	MORGAN STANLEY	71,153	0.16%	$181K	-44,875 (-38.7%)
35	Man Group plc	58,954	0.14%	$150K	NEW
36	Point72 Asset Management, L.P.	57,582	0.13%	$147K	NEW
37	Mariner, LLC	55,712	0.13%	$142K	+36,498 (+190.0%)
38	GABELLI FUNDS LLC	52,000	0.12%	$133K	—
39	AMERICAN CENTURY COMPANIES INC	50,069	0.11%	$128K	-15,048 (-23.1%)
40	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	42,326	0.10%	$108K	—
41	IEQ CAPITAL, LLC	38,358	0.09%	$98K	NEW
42	Invesco Ltd.	38,132	0.09%	$97K	+394 (+1.0%)
43	JPMORGAN CHASE & CO	37,624	0.09%	$94K	+20,064 (+114.3%)
44	MERCER GLOBAL ADVISORS INC /ADV	37,381	0.09%	$95K	+18,567 (+98.7%)
45	FRANKLIN RESOURCES INC	30,688	0.07%	$78K	+145 (+0.5%)
46	SUSQUEHANNA INTERNATIONAL GROUP, LLP	29,608	0.07%	$76K	-103,437 (-77.7%)
47	ACADIAN ASSET MANAGEMENT LLC	28,254	0.06%	$71K	+28,244 (+282440.0%)
48	XTX Topco Ltd	25,448	0.06%	$65K	-47,212 (-65.0%)
49	Walleye Capital LLC	24,222	0.06%	$62K	NEW
50	Creative Planning	23,104	0.05%	$59K	NEW
51	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	22,910	0.05%	$53K	+12,139 (+112.7%)
52	Integrity Advisory Solutions, LLC	21,734	0.05%	$55K	NEW
53	Centiva Capital, LP	21,153	0.05%	$54K	NEW
54	MILLENNIUM MANAGEMENT LLC	19,015	0.04%	$48K	-26,504 (-58.2%)
55	Dynamic Technology Lab Private Ltd	18,579	0.04%	$47K	NEW
56	Scientech Research LLC	17,527	0.04%	$45K	-17,101 (-49.4%)
57	RHUMBLINE ADVISERS	15,345	0.04%	$39K	-25,851 (-62.8%)
58	SIMPLEX TRADING, LLC	15,004	0.03%	$38K	-6,977 (-31.7%)
59	STATE OF WISCONSIN INVESTMENT BOARD	14,390	0.03%	$37K	NEW
60	Vanguard Global Advisers, LLC	13,907	0.03%	$35K	—
61	Schonfeld Strategic Advisors LLC	13,444	0.03%	$34K	-5,684 (-29.7%)
62	AXQ CAPITAL, LP	11,838	0.03%	$30K	NEW
63	Cerity Partners LLC	11,806	0.03%	$30K	NEW
64	CAPTRUST FINANCIAL ADVISORS	11,674	0.03%	$30K	NEW
65	Mraz, Amerine & Associates, Inc.	11,300	0.03%	$29K	—
66	BOOTHBAY FUND MANAGEMENT, LLC	11,044	0.03%	$28K	NEW
67	BNP PARIBAS FINANCIAL MARKETS	10,923	0.03%	$28K	-1,434 (-11.6%)
68	Murphy Pohlad Asset Management LLC	10,000	0.02%	$26K	-1,600 (-13.8%)
69	FMR LLC	8,571	0.02%	$22K	+257 (+3.1%)
70	Firsthand Capital Management, Inc.	6,800	0.02%	$17K	—
71	GROUP ONE TRADING LLC	6,617	0.02%	$17K	NEW
72	Morse Asset Management, Inc	5,700	0.01%	$15K	NEW
73	Arax Advisory Partners	5,210	0.01%	$13K	+4,297 (+470.6%)
74	Rockefeller Capital Management L.P.	4,670	0.01%	$12K	—
75	State of Alaska, Department of Revenue	3,998	0.01%	$10K	—
76	Russell Investments Group, Ltd.	3,279	0.01%	$8K	+439 (+15.5%)
77	Allworth Financial LP	2,511	0.01%	$6K	+1,667 (+197.5%)
78	BARCLAYS PLC	2,162	0.00%	$6K	-3,707 (-63.2%)
79	EverSource Wealth Advisors, LLC	1,812	0.00%	$5K	+1,204 (+198.0%)
80	SBI Securities Co., Ltd.	1,595	0.00%	$4K	-1 (-0.1%)
81	McMillan Office, Inc.	1,390	0.00%	$4K	—
82	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	1,184	0.00%	$3K	—
83	OSAIC HOLDINGS, INC.	1,052	0.00%	$3K	+482 (+84.6%)
84	Essential Partners LLC	690	0.00%	$2K	+480 (+228.6%)
85	ROTHSCHILD INVESTMENT LLC	254	0.00%	$648	+111 (+77.6%)
86	Avion Wealth	194	0.00%	$0	NEW
87	Wealth Enhancement Trust Services, Inc.	184	0.00%	$469	NEW
88	Farther Finance Advisors, LLC	181	0.00%	$459	-142 (-44.0%)
89	IFP Advisors, Inc	176	0.00%	$449	+7 (+4.1%)
90	PNC Financial Services Group, Inc.	171	0.00%	$436	-5,263 (-96.9%)
91	SJS Investment Consulting Inc.	156	0.00%	$398	+37 (+31.1%)
92	Basecamp Wealth Advisors LLC	143	0.00%	$365	+74 (+107.2%)
93	ROYAL BANK OF CANADA	136	0.00%	$0	-6,137 (-97.8%)
94	Clearstead Advisors, LLC	136	0.00%	$347	NEW
95	True Wealth Design, LLC	100	0.00%	$255	+88 (+733.3%)
96	Caitong International Asset Management Co., Ltd	17	0.00%	$43	NEW
97	JPL Wealth Management, LLC	6	0.00%	$16	+4 (+200.0%)
98	CITIGROUP INC	1	0.00%	$3	-1,485 (-99.9%)
99	WELLS FARGO & COMPANY/MN	0	0.00%	$1	-22,592 (-100.0%)

Exited since 2026-03-31 (23 filers; largest 23 shown)

VANGUARD PORTFOLIO MANAGEMENT LLC	−184,246
Bank of New York Mellon Corp	−73,079
STRS OHIO	−72,400
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	−69,775
Nuveen, LLC	−33,406
PRICE T ROWE ASSOCIATES INC /MD/	−16,868
CWM, LLC	−16,034
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	−15,686
ALLIANCEBERNSTEIN L.P.	−12,700
TWO SIGMA SECURITIES, LLC	−11,601
OXFORD ASSET MANAGEMENT LLP	−10,096
Avanza Fonder AB	−7,667
Police & Firemen's Retirement System of New Jersey	−5,528
Tower Research Capital LLC (TRC)	−5,257
Legal & General Group Plc	−2,872
Ameritas Investment Partners, Inc.	−2,422
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	−1,731
NEW YORK STATE COMMON RETIREMENT FUND	−1,400
MAI Capital Management	−1,147
Sterling Capital Management LLC	−1,059
Optiver Holding B.V.	−320
Wealth Preservation Advisors, LLC	−239
Root Financial Partners, LLC	−64

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
AIGH Capital Management LLC	SCHEDULE 13G/A	2026-04-27	2026-03-31	0	0%
Orin Hirschman	SCHEDULE 13G/A	2026-04-27	2026-03-31	0	0%
Daniel Kaufman	SCHEDULE 13G	2026-03-12	2026-03-11	2,191,278	5.12%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.