Ticker · CUSIP 03969T109
Holders (tracked)
10
Combined shares
4,178,870
Combined value
$25.46M
Last close
$8.84
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
Price is +45.1% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
18 events
- Wellington Management exited2026-02-17−85,483 shares · 2025Q413F
- D.E. Shaw & Co. added2026-02-17+37,610 shares · 2025Q413F
- AQR Capital Management opened position2026-02-17+43,403 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) exited2026-02-17−42,120 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+457,467 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+264,977 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+222,163 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−1,838 shares · 2025Q413F
- Renaissance Technologies opened position2026-02-12+119,905 shares · 2025Q413F
- Cathie Wood (ARK Invest) added2026-02-11+738,378 shares · 2025Q413F
- +39,800 shares · 2025Q313F
- Steve Cohen (Point72) exited2025-11-14−6,154 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+2,857 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+49,776 shares · 2025Q313F
- AQR Capital Management exited2025-11-14−11,218 shares · 2025Q313F
- T. Rowe Price added2025-11-14+4,679 shares · 2025Q313F
- Wellington Management trimmed2025-11-14−26,424 shares · 2025Q313F
- Cathie Wood (ARK Invest) added2025-11-12+157,681 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ARCT…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Renaissance Technologies | 2019Q3 | $5.92 | +49.3% | $1.1M |
| Steve Cohen (Point72) | 2020Q2 | $6.88 | +28.4% | $2.0M |
| Ken Griffin (Citadel Advisors) | 2019Q4 | $7.39 | +19.6% | $762K |
| Ken Griffin (Citadel Advisors) | 2019Q4 | $7.39 | +19.6% | $762K |
| Izzy Englander (Millennium Mgmt) | 2020Q1 | $7.69 | +15.0% | $2.7M |
| Two Sigma Investments | 2019Q3 | $7.85 | +12.6% | $4.8M |
| AQR Capital Management | 2020Q3 | $11.61 | -23.8% | $384K |
| D.E. Shaw & Co. | 2020Q2 | $15.60 | -43.3% | $865K |
| T. Rowe Price | 2020Q2 | $20.07 | -55.9% | $231K |
| Cathie Wood (ARK Invest) | 2019Q2 | $21.62 | -59.1% | $23.1M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions3
- Steve Cohen (Point72)+222,163$1.4M
- Renaissance Technologies+119,905$735K
- AQR Capital Management+43,403$266K
Added to4
- Cathie Wood (ARK Invest)+738,378$4.5M
- Two Sigma Investments+457,467$2.8M
- Izzy Englander (Millennium Mgmt)+264,977$1.6M
- D.E. Shaw & Co.+37,610$231K
Trimmed1
- T. Rowe Price−1,838$11
Exited2
- Wellington Management−85,483$1.6M
- Ken Griffin (Citadel Advisors)−42,120$776K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 8 | $129.3M |
| 2022Q2 | 9 | $97.2M |
| 2022Q3 | 8 | $76K |
| 2022Q4 | 9 | $75.6M |
| 2023Q1 | 10 | $102.8M |
| 2023Q2 | 13 | $123.9M |
| 2023Q3 | 12 | $125.0M |
| 2023Q4 | 11 | $152.7M |
| 2024Q1 | 11 | $185.7M |
| 2024Q2 | 11 | $143.1M |
| 2024Q3 | 9 | $60.1M |
| 2024Q4 | 6 | $34.8M |
| 2025Q1 | 10 | $28.6M |
| 2025Q2 | 10 | $27.0M |
| 2025Q3 | 10 | $43.5M |
| 2025Q4 | 10 | $25.5M |
Who owns ARCT
10 super-investors · 2025Q4
Tracked stake
4.18M
shares
Combined value
$25M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added4Trim1Sold2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Cathie Wood ARK Invest | 2.61M | $16M |
| 2 | Two Sigma Investments | 546.7K | $3M |
| 3 | Izzy Englander Millennium Mgmt | 304.8K | $2M |
| 4 | Steve Cohen Point72 | 222.2K | $1M |
| 5 | Ken Griffin Citadel Advisors | 120.7K | $740K |
| 6 | Renaissance Technologies | 119.9K | $735K |
| 7 | D.E. Shaw & Co. | 97.8K | $600K |
| 8 | Ken Griffin Citadel Advisors | 86.2K | $528K |
| 9 | AQR Capital Management | 43.4K | $266K |
| 10 | T. Rowe Price | 26.1K | $161 |
Recent moves
20 transactions
- +43,403 · 2025Q4
- +457,467 · 2025Q4
- +222,163 · 2025Q4
- −42,120 · 2025Q4
- +264,977 · 2025Q4
- −85,483 · 2025Q4
- +37,610 · 2025Q4
- TRIMT. Rowe Price−1,838 · 2025Q4
- +119,905 · 2025Q4
- +738,378 · 2025Q4
- −11,218 · 2025Q3
- +39,800 · 2025Q3
- +4,679 · 2025Q3
- −6,154 · 2025Q3
- +2,857 · 2025Q3
- +49,776 · 2025Q3
- −26,424 · 2025Q3
- +157,681 · 2025Q3
- +49,007 · 2025Q2
- −4,163 · 2025Q2
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