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Equibles

ARQQ

Arqit Quantum Inc.
$23.52 -5.34 (-18.49%) At close · Jul 2
Market Cap
$409.22M
Shares
11,545,354

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.

Holders: 60
Total Value: $58,953,141
Total Shares: 4,449,295

Institutional Ownership Trend

7 quarters

Holder Concentration

Across 60 13F filers · Δ vs Dec 31, 2025
Top Holder
32.6%
Sep 2024 → Mar 2026 · range 21.0% – 61.2%
+0.1 pts
Top 5
80.2%
Sep 2024 → Mar 2026 · range 62.6% – 96.4%
−1.4 pts
Top 10
89.9%
Sep 2024 → Mar 2026 · range 79.4% – 99.9%
−2.1 pts
HHI
2,242
Sep 2024 → Mar 2026 · range 1,059 – 4,297
Moderately concentrated−5

Quarterly Activity

vs Dec 31, 2025
New
10
Increased
19
Decreased
15
Sold Out
13
Unchanged
16
Holder count: -3
Institutional value: -36.4%
Shares held: +5.1%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Small Kessler Investment Group, LLC +109,720 157,569
Mid Defiance ETFs, LLC +73,656 1,452,311
Mid Penserra Capital Management LLC +73,656 1,452,311
Mega CITADEL ADVISORS LLC +67,200 154,500
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. +22,596 324,309

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega JANE STREET GROUP, LLC −89,876 66,399
Mega UBS Group AG −61,962 85,435
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP −58,633 182,800
Large NATIONAL BANK OF CANADA /FI/ −29,241 1,093
Small Crawford Fund Management, LLC −15,000 60,000

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega MILLENNIUM MANAGEMENT LLC 54,026 $715,844
Large RENAISSANCE TECHNOLOGIES LLC 41,400 $548,550
Large TUDOR INVESTMENT CORP ET AL 38,069 $504,414
Micro True Vision MN LLC 14,848 $196,736
Small Headlands Technologies LLC 12,321 $163,253

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Small Veracity Capital LLC 12,207 $267,089
Small FLAGSHIP HARBOR ADVISORS, LLC 3,439 $75,245
Large Kestra Advisory Services, LLC 1,813 $39,668
Mega BNP PARIBAS ARBITRAGE, SA 1,733 $37,918
Small ALBION FINANCIAL GROUP /UT 1,000 $21,880
Filter: New 10 Increased 19 Reduced 15 Sold out 13 Unchanged 16
Showing 64 of 64
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mid Penserra Capital Management LLC $19,243,120 32.64% 1,452,311
Mid Defiance ETFs, LLC Mutual Fund $19,243,120 32.64% 1,452,311
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $4,297,093 7.29% 324,309
Small Kessler Investment Group, LLC $2,087,789 3.54% 157,569
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,766,225 3.00% 133,300
Mega CITADEL ADVISORS LLC $1,378,000 2.34% 104,000
Mega UBS Group AG $1,132,013 1.92% 85,435
Mega RAYMOND JAMES FINANCIAL INC $845,840 1.43% 63,837
Small Crawford Fund Management, LLC $795,000 1.35% 60,000
Mega MILLENNIUM MANAGEMENT LLC $715,844 1.21% 54,026
Mega Legal & General Group Plc $697,374 1.18% 52,632
Mega CITADEL ADVISORS LLC $669,125 1.14% 50,500
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $655,875 1.11% 49,500
Large RENAISSANCE TECHNOLOGIES LLC $548,550 0.93% 41,400
Large TUDOR INVESTMENT CORP ET AL $504,414 0.86% 38,069
Large BANQUE PICTET & CIE SA $477,000 0.81% 36,000
Mega JANE STREET GROUP, LLC $439,886 0.75% 33,199
Mid SBI Securities Co., Ltd. Broker-Dealer $359,194 0.61% 27,109
Mid Advisory Services Network, LLC $288,147 0.49% 21,747
Mega VAN ECK ASSOCIATES CORP $267,027 0.45% 20,153
Mega BANK OF AMERICA CORP /DE/ Bank $254,294 0.43% 19,192
Mega JANE STREET GROUP, LLC $239,825 0.41% 18,100
Mega JANE STREET GROUP, LLC $200,075 0.34% 15,100
Mega WELLS FARGO & COMPANY/MN $199,982 0.34% 15,093
Micro True Vision MN LLC $196,736 0.33% 14,848
Mid GROUP ONE TRADING LLC $178,292 0.30% 13,456
Small Headlands Technologies LLC $163,253 0.28% 12,321
Mega Bank of New York Mellon Corp Bank $157,833 0.27% 11,912
Mid Stonehage Fleming Financial Services Holdings Ltd $152,746 0.26% 11,528
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $132,208 0.22% 9,978
Mega CITIGROUP INC $130,472 0.22% 9,847
Mega MORGAN STANLEY $124,271 0.21% 9,379
Mega ROYAL BANK OF CANADA Bank $92,909 0.16% 7,012
Large Mirae Asset Global Investments Co., Ltd. $77,459 0.13% 5,846
Large JONES FINANCIAL COMPANIES LLLP $44,997 0.08% 3,396
Mega BlackRock, Inc. $29,574 0.05% 2,232
Large OSAIC HOLDINGS, INC. $24,472 0.04% 1,847
Mid Leonteq Securities AG Broker-Dealer $22,856 0.04% 1,725
Mid IFP Advisors, Inc $14,906 0.03% 1,125
Large NATIONAL BANK OF CANADA /FI/ Bank $14,482 0.02% 1,093
Mid EFG International AG $13,250 0.02% 1,000
Mid Allworth Financial LP $13,250 0.02% 1,000
Mid HARBOUR INVESTMENTS, INC. $10,600 0.02% 800
Large Federation des caisses Desjardins du Quebec $9,222 0.02% 696
Large Steward Partners Investment Advisory, LLC $7,950 0.01% 600
Mid SIGNATUREFD, LLC $7,950 0.01% 600
Mid WOLVERINE ASSET MANAGEMENT LLC $6,479 0.01% 489
Mid Quantbot Technologies LP $5,883 0.01% 444
Mid Parallel Advisors, LLC $3,471 0.01% 262
Small Sunbelt Securities, Inc. Broker-Dealer $3,312 0.01% 250
Mid MAI Capital Management $2,650 0.00% 200
Large US BANCORP \DE\ Bank $1,788 0.00% 135
Mid Heritage Wealth Advisors $1,722 0.00% 130
Micro West Financial Advisors, LLC $1,325 0.00% 100
Micro Cornerstone Financial Management LLC $516 0.00% 39
Small Basecamp Wealth Advisors LLC $503 0.00% 38
Micro Investors Portfolio Services LLC $371 0.00% 28
Small Parkside Financial Bank & Trust Bank $212 0.00% 16
Small CoreCap Advisors, LLC $212 0.00% 16
Small MCF Advisors LLC $132 0.00% 10
Large TD Waterhouse Canada Inc. $26 0.00% 2
Small Covestor Ltd $13 0.00% 1
Micro Vermillion Wealth Management, Inc. $13 0.00% 1
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $13 0.00% 1
Key facts CIK 1859690 CUSIP G0567U127 13F (30d) 3 filings 2 filers Visit website Investor relations

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