Argo Blockchain plc
Argo Blockchain plc (ARBK) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ARBK · as of Sep 30, 2025
Ownership Breakdown
30
Institutional Holders
▲ 6 vs Q2
$155,843
Total Inst. Value
▼ $760,070 vs Q2
318,029
Shares Outstanding
freeFloat 88.97%
599,648
13F Shares Held
▼ 4.32M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ARBK largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BANK OF MONTREAL /CAN/ services-computer processing & data preparation | 115.5K | 18.72% | 18.72% | $30.04M | Nov 13, 2025 | ▲ 434 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP services-computer processing & data preparation | 113.3K | 18.35% | 18.35% | $29.66M | Nov 14, 2025 | ▲ 113.3K |
CITADEL ADVISORS LLC services-computer processing & data preparation | 108.2K | 17.53% | 17.53% | $28.34M | Nov 14, 2025 | ▲ 70.6K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP services-computer processing & data preparation | 96.7K | 15.67% | 15.67% | $25.14M | Nov 14, 2025 | ▲ 31.8K |
VIRTU FINANCIAL LLC services-computer processing & data preparation | 75.6K | 12.25% | 12.25% | $20.00M | Nov 14, 2025 | ▲ 31.2K |
GROUP ONE TRADING, L.P. services-computer processing & data preparation | 57.9K | 9.39% | 9.39% | $15.17M | Nov 12, 2025 | ▲ 34.3K |
CITADEL ADVISORS LLC services-computer processing & data preparation | 51.6K | 8.36% | 8.36% | $13.51M | Nov 14, 2025 | ▲ 51.6K |
HRT FINANCIAL LP services-computer processing & data preparation | 49.9K | 8.09% | 8.09% | $13.00M | Nov 14, 2025 | ▲ 49.9K |
STONEX GROUP INC. services-computer processing & data preparation | 41.3K | 6.70% | 6.70% | $10.82M | Nov 14, 2025 | NEW |
SUSQUEHANNA INTERNATIONAL GROUP, LLP services-computer processing & data preparation | 36.1K | 5.85% | 5.85% | $9.39M | Nov 14, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
10
Increased
+390.5K shares7
New Positions
first time holders3
Decreased
−95.3K shares4
Sold Out
fully exitedNet shares change (top 50)
+295.2K
+390.5K / −95.3K
Net new holders
+10
7 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ARBK insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Argo Blockchain plc (ARBK) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 11.03%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Argo Blockchain plc is BANK OF MONTREAL /CAN/, holding approximately 115,531 shares — equal to 18.72% of outstanding shares — as of September 30, 2025.
A total of 30 institutional investors currently hold ARBK stock, with a combined institutional value of approximately $155,843 as of the most recent 13F filing period.
Frequently asked questions
ARBK ownershipArgo Blockchain plc (ARBK) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BANK OF MONTREAL /CAN/ with a 18.72% stake. Company insiders hold 11.03%. Data sourced from SEC Form 13F as of September 30, 2025.