ARKB — ARK 21SHARES BITCOIN ETF
As of Q2 2026, 7 SEC-registered investment managers reported holding ARKB (ARK 21SHARES BITCOIN ETF) in their latest 13F filings, with a combined reported value of $152.92M across 7.86M shares. That is -9.5% by share count (-826.16K shares) versus the previous quarter, while reported value moved -21.7%. Ownership is concentrated: the five largest holders account for 99.8% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 1 opened new positions, 1 added to existing stakes, 3 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
ARKB is classified in the Financials sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| ARK Invest history | 6.45M | $125.61M | 0.81% | Reduce |
| Millennium Management history | 1.06M | $20.64M | 0.01% | Reduce |
| Citadel Advisors history | 251.74K | $4.90M | 0.00% | Add |
| Renaissance Technologies history | 48.05K | $935.15K | 0.00% | New |
| Morgan Stanley history | 27.70K | $539.06K | 0.00% | Reduce |
| PNC Financial Services history | 15.60K | $303.58K | 0.00% | Hold |
| Wells Fargo & Co history | 1 | $15 | 0.00% | Hold |
Q1 2026 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| ARK Invest history | 6.70M | $150.64M | 1.17% | Reduce |
| Millennium Management history | 1.70M | $38.14M | 0.02% | Reduce |
| Citadel Advisors history | 236.20K | $5.31M | 0.00% | Reduce |
| Morgan Stanley history | 29.53K | $664.17K | 0.00% | Reduce |
| PNC Financial Services history | 15.60K | $350.84K | 0.00% | Hold |
| Bank of America Corp history | 9.02K | $202.95K | 0.00% | Add |
| Wells Fargo & Co history | 1 | $14 | 0.00% | Reduce |
Q4 2025 — 8 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| ARK Invest history | 6.87M | $199.55M | 1.32% | Add |
| Millennium Management history | 4.31M | $125.28M | 0.05% | Add |
| Citadel Advisors history | 417.97K | $12.14M | 0.00% | Reduce |
| Renaissance Technologies history | 127.60K | $3.71M | 0.01% | Add |
| Morgan Stanley history | 100.00K | $2.90M | 0.00% | Add |
| PNC Financial Services history | 15.60K | $453.02K | 0.00% | Add |
| Bank of America Corp history | 4.91K | $142.44K | 0.00% | Add |
| Wells Fargo & Co history | 2 | $55 | 0.00% | Add |
Q3 2025 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| ARK Invest history | 6.32M | $240.39M | 1.43% | Reduce |
| Millennium Management history | 3.96M | $150.56M | 0.07% | Reduce |
| Citadel Advisors history | 477.06K | $18.14M | 0.00% | Reduce |
| Renaissance Technologies history | 46.60K | $1.77M | 0.00% | Reduce |
| Morgan Stanley history | 23.90K | $908.64K | 0.00% | Reduce |
| Bank of America Corp history | 4.71K | $178.88K | 0.00% | Add |
| PNC Financial Services history | 3.60K | $136.87K | 0.00% | New |
| BlackRock Inc history | 126 | $4.81K | 0.00% | New |
| Wells Fargo & Co history | 1 | $35 | 0.00% | Hold |
Q2 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| ARK Invest history | 6.62M | $237.00M | 1.74% | Add |
| Millennium Management history | 4.23M | $151.34M | 0.07% | Add |
| Citadel Advisors history | 759.45K | $27.18M | 0.01% | Add |
| Renaissance Technologies history | 163.80K | $5.86M | 0.01% | New |
| Morgan Stanley history | 29.22K | $1.05M | 0.00% | Add |
| Bank of America Corp history | 3.46K | $123.80K | 0.00% | Add |
| Wells Fargo & Co history | 1 | $22 | 0.00% | Hold |
Q1 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| ARK Invest history | 2.87M | $235.87M | 2.37% | Reduce |
| Millennium Management history | 1.38M | $113.29M | 0.06% | Add |
| Citadel Advisors history | 194.88K | $16.02M | 0.00% | Add |
| Morgan Stanley history | 12.29K | $1.01M | 0.00% | Reduce |
| Bank of America Corp history | 100 | $8.22K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 87 | $7.17K | 0.00% | New |
| Wells Fargo & Co history | 1 | $108 | 0.00% | Hold |
New Positions (Q2 2026)
- Renaissance Technologies 48.05K sh · $935.15K
Fully Exited (vs previous quarter)
- Bank of America Corp sold 9.02K sh · $202.95K
Fund Position History — shares by quarter (top 11 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| ARK Invest | 6.45M | 6.70M | 6.87M | 6.32M | 6.62M | 2.87M | 3.10M | 3.14M | 3.42M | 2.91M |
| Millennium Management | 1.06M | 1.70M | 4.31M | 3.96M | 4.23M | 1.38M | 1.13M | 934.17K | 634.00K | 634.00K |
| Citadel Advisors | 251.74K | 236.20K | 417.97K | 477.06K | 759.45K | 194.88K | 106.01K | — | 39.16K | 145.80K |
| Renaissance Technologies | 48.05K | — | 127.60K | 46.60K | 163.80K | — | 15.50K | — | 19.50K | 32.50K |
| Morgan Stanley | 27.70K | 29.53K | 100.00K | 23.90K | 29.22K | 12.29K | 15.46K | 20.11K | 26.22K | 31.71K |
| PNC Financial Services | 15.60K | 15.60K | 15.60K | 3.60K | — | — | 1.65K | 450 | — | — |
| Wells Fargo & Co | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | — | — |
| BlackRock Inc | — | — | — | 126 | — | — | — | — | — | — |
| Bank of America Corp | — | 9.02K | 4.91K | 4.71K | 3.46K | 100 | 332 | — | — | — |
| Fidelity Management & Research (FMR) | — | — | — | — | — | 87 | — | — | — | — |
| Goldman Sachs Group | — | — | — | — | — | — | — | 50.00K | 5.00K | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details