Arq, Inc. (ARQ) — Institutional Holders, Q2 2026

100 institutional investment managers reported a ARQ position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $39.5M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← ARQ stock profile

ARQ in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

Trimmed

Sold out

Biggest buyers

AQR CAPITAL MANAGEMENTAdded · +728,404 sh+$1.9M
Truffle Hound CapitalNew · +420,000 sh+$1.1M
RBF CapitalNew · +370,000 sh+$943.5K
JANE STREET GROUPAdded · +319,335 sh+$814.3K
TWO SIGMA INVESTMENTSAdded · +223,077 sh+$568.8K

Biggest sellers

BlackRockTrimmed · -1,588,557 sh-$4.1M
STATE STREETTrimmed · -410,611 sh-$1.0M
GEODE CAPITAL MANAGEMENTTrimmed · -401,713 sh-$1.0M
VANGUARD PORTFOLIO MANAGEMENTSold out · -184,246 sh-$469.8K
DIMENSIONAL FUND ADVISORSTrimmed · -154,770 sh-$394.7K

ARQ 13F holders ranked 1–100 of 100

Institutional investors reporting a position in Arq, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	ROYCE & ASSOCIATES#1 · 1,862,764 sh	1,862,764	$4.8M	0.04%	+6.5%
2	AQR CAPITAL MANAGEMENT#2 · 1,814,114 sh	1,814,114	$4.6M	<0.01%	+67.1%
3	VANGUARD CAPITAL MANAGEMENT#3 · 1,464,532 sh	1,464,532	$3.7M	<0.01%	+2.3%
4	MARSHALL WACE, LLP#4 · 880,201 sh	880,201	$2.2M	<0.01%	+8.7%
5	Peapod Lane Capital#5 · 787,880 sh	787,880	$2.0M	—	+1.6%
6	DIMENSIONAL FUND ADVISORS#6 · 607,420 sh	607,420	$1.5M	<0.01%	-20.3%
7	RENAISSANCE TECHNOLOGIES#7 · 598,059 sh	598,059	$1.5M	<0.01%	+45.7%
8	JANE STREET GROUP#8 · 509,225 sh	509,225	$1.3M	<0.01%	+168.2%
9	BlackRock#9 · 508,965 sh	508,965	$1.3M	0.00%	-75.7%
10	DCF Advisers#10 · 461,585 sh	461,585	$1.2M	0.21%	+40.8%
11	Truffle Hound Capital#11 · 420,000 sh	420,000	$1.1M	0.23%	New
12	GEODE CAPITAL MANAGEMENT#12 · 399,518 sh	399,518	$1.0M	<0.01%	-50.1%
13	Round Rock Advisors#13 · 378,979 sh	378,979	$966.4K	0.12%	+98.7%
14	RBF Capital#14 · 370,000 sh	370,000	$943.5K	0.04%	New
15	D. E. Shaw#15 · 358,479 sh	358,479	$914.1K	<0.01%	+27.2%
16	GSA CAPITAL PARTNERS LLP#16 · 347,700 sh	347,700	$887.0K	0.06%	+20.2%
17	JACOBS LEVY EQUITY MANAGEMENT#17 · 328,988 sh	328,988	$838.9K	<0.01%	-6.3%
18	Marex Group plc#18 · 260,848 sh	260,848	$665.2K	<0.01%	+334.7%
19	TWO SIGMA INVESTMENTS#19 · 251,777 sh	251,777	$642.0K	<0.01%	+777.3%
20	BANK OF AMERICA#20 · 231,490 sh	231,490	$590.3K	0.00%	+13.6%
21	VANGUARD FIDUCIARY#21 · 211,100 sh	211,100	$538.3K	<0.01%	+3.7%
22	Connor, Clark & Lunn Investment Management Ltd.#22 · 181,789 sh	181,789	$463.6K	<0.01%	New
23	CITADEL ADVISORS#23 · 163,201 sh	163,201	$416.2K	0.00%	New
24	Rangeley Capital#24 · 157,000 sh	157,000	$400.4K	0.37%	New
25	STATE STREET#25 · 153,987 sh	153,987	$392.7K	0.00%	-72.7%
26	UBS Group AG#26 · 136,045 sh	136,045	$346.9K	0.00%	+950.6%
27	GOLDMAN SACHS GROUP#27 · 120,400 sh	120,400	$307.0K	0.00%	-14.6%
28	Marquette Asset Management#28 · 106,741 sh	106,741	$272.2K	—	New
29	Qube Research & Technologies Ltd#29 · 93,008 sh	93,008	$237.2K	<0.01%	New
30	NORTHERN#30 · 77,788 sh	77,788	$198.4K	0.00%	-65.9%
31	Corient Private Wealth#31 · 77,525 sh	77,525	$197.7K	<0.01%	0.0%
32	AMERIPRISE FINANCIAL#32 · 75,796 sh	75,796	$193.3K	0.00%	0.0%
33	BRIDGEWAY CAPITAL MANAGEMENT#33 · 74,780 sh	74,780	$190.7K	<0.01%	0.0%
34	MORGAN STANLEY#34 · 71,153 sh	71,153	$181.4K	0.00%	-38.7%
35	Man Group plc#35 · 58,954 sh	58,954	$150.3K	<0.01%	New
36	Point72 Asset Management, L.P.#36 · 57,582 sh	57,582	$146.8K	<0.01%	New
37	Mariner#37 · 55,712 sh	55,712	$142.0K	<0.01%	+190.0%
38	GABELLI FUNDS#38 · 52,000 sh	52,000	$132.6K	<0.01%	0.0%
39	AMERICAN CENTURY COMPANIES#39 · 50,069 sh	50,069	$127.7K	<0.01%	-23.1%
40	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO#40 · 42,326 sh	42,326	$107.9K	<0.01%	0.0%
41	IEQ CAPITAL#41 · 38,358 sh	38,358	$97.8K	<0.01%	New
42	Invesco Ltd.#42 · 38,132 sh	38,132	$97.2K	0.00%	+1.0%
43	MERCER GLOBAL ADVISORS#43 · 37,381 sh	37,381	$95.3K	<0.01%	+98.7%
44	JPMORGAN CHASE#44 · 37,624 sh	37,624	$94.1K	0.00%	+114.3%
45	FRANKLIN RESOURCES#45 · 30,688 sh	30,688	$78.3K	0.00%	+0.5%
46	SUSQUEHANNA INTERNATIONAL GROUP, LLP#46 · 29,608 sh	29,608	$75.5K	0.00%	-77.7%
47	ACADIAN ASSET MANAGEMENT#47 · 28,254 sh	28,254	$71.0K	<0.01%	New
48	XTX Topco Ltd#48 · 25,448 sh	25,448	$64.9K	<0.01%	-65.0%
49	Walleye Capital#49 · 24,222 sh	24,222	$61.8K	<0.01%	New
50	Creative Planning#50 · 23,104 sh	23,104	$58.9K	0.00%	New
51	Integrity Advisory Solutions#51 · 21,734 sh	21,734	$55.4K	<0.01%	New
52	Centiva Capital#52 · 21,153 sh	21,153	$53.9K	<0.01%	New
53	WEALTH ENHANCEMENT ADVISORY SERVICES#53 · 22,910 sh	22,910	$53.2K	—	+112.7%
54	MILLENNIUM MANAGEMENT#54 · 19,015 sh	19,015	$48.5K	0.00%	-58.2%
55	Dynamic Technology Lab Private Ltd#55 · 18,579 sh	18,579	$47.0K	0.01%	New
56	Scientech Research#56 · 17,527 sh	17,527	$44.7K	0.04%	-49.4%
57	RHUMBLINE ADVISERS#57 · 15,345 sh	15,345	$39.1K	0.00%	-62.8%
58	SIMPLEX TRADING#58 · 15,004 sh	15,004	$38.3K	0.00%	-31.7%
59	STATE OF WISCONSIN INVESTMENT BOARD#59 · 14,390 sh	14,390	$36.7K	<0.01%	New
60	Vanguard Global Advisers#60 · 13,907 sh	13,907	$35.5K	0.00%	0.0%
61	Schonfeld Strategic Advisors#61 · 13,444 sh	13,444	$34.3K	<0.01%	-29.7%
62	AXQ CAPITAL#62 · 11,838 sh	11,838	$30.2K	<0.01%	New
63	Cerity Partners#63 · 11,806 sh	11,806	$30.1K	0.00%	New
64	CAPTRUST FINANCIAL ADVISORS#64 · 11,674 sh	11,674	$29.8K	0.00%	New
65	Mraz, Amerine & Associates#65 · 11,300 sh	11,300	$28.8K	<0.01%	0.0%
66	BOOTHBAY FUND MANAGEMENT#66 · 11,044 sh	11,044	$28.2K	<0.01%	New
67	BNP PARIBAS FINANCIAL MARKETS#67 · 10,923 sh	10,923	$27.9K	0.00%	-11.6%
68	Murphy Pohlad Asset Management#68 · 10,000 sh	10,000	$25.5K	—	-13.8%
69	FMR#69 · 8,571 sh	8,571	$21.9K	0.00%	+3.1%
70	Firsthand Capital Management#70 · 6,800 sh	6,800	$17.3K	0.03%	0.0%
71	GROUP ONE TRADING, L.P.#71 · 6,617 sh	6,617	$16.9K	0.00%	New
72	Morse Asset Management#72 · 5,700 sh	5,700	$14.5K	<0.01%	New
73	SRS Capital Advisors#73 · 5,210 sh	5,210	$13.3K	<0.01%	+470.6%
74	Rockefeller Capital Management L.P.#74 · 4,670 sh	4,670	$11.9K	0.00%	0.0%
75	State of Alaska, Department of Revenue#75 · 3,998 sh	3,998	$10.0K	—	0.0%
76	Integrated Wealth Concepts#76 · 3,783 sh	3,783	$9.6K	0.00%	New
77	Russell Investments Group, Ltd.#77 · 3,279 sh	3,279	$8.4K	0.00%	+15.5%
78	Allworth Financial#78 · 2,511 sh	2,511	$6.4K	0.00%	+197.5%
79	BARCLAYS PLC#79 · 2,162 sh	2,162	$5.5K	0.00%	-63.2%
80	EverSource Wealth Advisors#80 · 1,812 sh	1,812	$4.6K	<0.01%	+63.2%
81	SBI Securities , Ltd.#81 · 1,595 sh	1,595	$4.1K	—	-0.1%
82	McMillan Office#82 · 1,390 sh	1,390	$3.5K	<0.01%	0.0%
83	NORTHWESTERN MUTUAL WEALTH MANAGEMENT#83 · 1,184 sh	1,184	$3.0K	0.00%	0.0%
84	OSAIC#84 · 1,052 sh	1,052	$2.7K	0.00%	+84.6%
85	Essential Partners#85 · 690 sh	690	$1.8K	—	+228.6%
86	ROTHSCHILD INVESTMENT#86 · 254 sh	254	$648.00	0.00%	+77.6%
87	Wealth Enhancement Services#87 · 184 sh	184	$469.00	—	New
88	Farther Finance Advisors#88 · 181 sh	181	$459.00	—	-44.0%
89	IFP Advisors#89 · 176 sh	176	$449.00	—	+4.1%
90	PNC FINANCIAL SERVICES GROUP#90 · 171 sh	171	$436.00	0.00%	-96.9%
91	SJS Investment Consulting#91 · 156 sh	156	$398.00	—	+31.1%
92	Basecamp Wealth Advisors#92 · 143 sh	143	$365.00	<0.01%	+107.2%
93	Clearstead Advisors#93 · 136 sh	136	$347.00	0.00%	New
94	True Wealth Design#94 · 100 sh	100	$255.00	—	+733.3%
95	Caitong International Asset Management , Ltd#95 · 17 sh	17	$43.00	0.00%	New
96	JPL Wealth Management#96 · 6 sh	6	$16.00	0.00%	+200.0%
97	CITIGROUP#97 · 1 sh	1	$3.00	0.00%	-99.9%
98	WELLS FARGO & COMPANY#98 · 0 sh	0	$1.00	0.00%	-100.0%
99	ROYAL BANK OF CANADA#99 · 136 sh	136	$0.00	0.00%	-97.8%
100	Avion Wealth#100 · 194 sh	194	$0.00	0.00%	New

Funds that sold out of ARQ in Q2 2026 (23)

Held ARQ at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held ARQ in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
VANGUARD PORTFOLIO MANAGEMENT184,246 sh	184,246	$471.7K
Bank of New York Mellon73,079 sh	73,079	$187.1K
STRS OHIO72,400 sh	72,400	$185.3K
CHARLES SCHWAB INVESTMENT MANAGEMENT69,775 sh	69,775	$178.6K
Nuveen33,406 sh	33,406	$85.5K
WELLS FARGO & COMPANY22,592 sh	22,592	$57.8K
PRICE T ROWE ASSOCIATES16,868 sh	16,868	$44.0K
ALLIANCEBERNSTEIN L.P.12,700 sh	12,700	$41.5K
MIRAE ASSET GLOBAL ETFS Ltd.15,686 sh	15,686	$40.2K
TWO SIGMA SECURITIES11,601 sh	11,601	$29.7K
OXFORD ASSET MANAGEMENT LLP10,096 sh	10,096	$25.8K
Avanza Fonder AB7,667 sh	7,667	$19.6K
Police & Firemen's Retirement System of New Jersey5,528 sh	5,528	$14.2K
Tower Research Capital (TRC)5,257 sh	5,257	$13.5K
Legal & General Group Plc2,872 sh	2,872	$7.4K
Ameritas Investment Partners2,422 sh	2,422	$6.2K
NEW YORK STATE COMMON RETIREMENT FUND1,400 sh	1,400	$3.6K
MAI Capital Management1,147 sh	1,147	$2.9K
Sterling Capital Management1,059 sh	1,059	$2.7K
Optiver Holding B.V.320 sh	320	$819.00
Wealth Preservation Advisors239 sh	239	$612.00
Root Financial Partners64 sh	64	$164.00
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM1,731 sh	1,731	—

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.