Ticker · CUSIP 04317A107
Holders (tracked)
4
Combined shares
672,269
Combined value
$2.88M
Last close
$12.55
Quarter
2025Q4
Price · 1Y$12.55+10.31 (+460.27%)H $12.55 · L $1.47 · Avg Vol 904K
Position opened
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 6.
Price is +192.5% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
8 events
- Ken Griffin (Citadel Advisors) exited2026-02-17−798,397 shares · 2025Q4Position
- Two Sigma Investments added2026-02-17+124,500 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−45,063 shares · 2025Q4Position
- Renaissance Technologies added2026-02-12+37,053 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−64,907 shares · 2025Q3Position
- Two Sigma Investments trimmed2025-11-14−1,007 shares · 2025Q3Position
- Renaissance Technologies opened position2025-11-13+79,147 shares · 2025Q3Position
- Norges Bank (Norway SWF) opened position2025-11-12+30,000 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ARTV…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Izzy Englander (Millennium Mgmt) | 2025Q2 | $1.51 | +731.1% | $2.7M |
| Renaissance Technologies | 2025Q3 | $3.32 | +277.7% | $1.5M |
| Two Sigma Investments | 2025Q2 | $3.90 | +221.9% | $1.8M |
| Wellington Management | 2024Q3 | $15.00 | -16.3% | $2.4M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to2
- Two Sigma Investments+124,500$534K
- Renaissance Technologies+37,053$159K
Trimmed1
- Izzy Englander (Millennium Mgmt)−45,063$193K
Exited1
- Ken Griffin (Citadel Advisors)−798,397$2.3M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q3 | 3 | $4.9M |
| 2024Q4 | 2 | $1.3M |
| 2025Q1 | 2 | $1.0M |
| 2025Q2 | 4 | $1.1M |
| 2025Q3 | 5 | $3.9M |
| 2025Q4 | 4 | $2.9M |
Who owns ARTV
4 super-investors · 2025Q4
Tracked stake
672.3K
shares
Combined value
$3M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added2Trim1Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 217.1K | $931K |
| 2 | Wellington Management | 194.1K | $833K |
| 3 | Two Sigma Investments | 144.9K | $621K |
| 4 | Renaissance Technologies | 116.2K | $498K |
Recent moves
14 transactions
- −798,397 · 2025Q4
- +124,500 · 2025Q4
- −45,063 · 2025Q4
- +37,053 · 2025Q4
- −64,907 · 2025Q3
- −1,007 · 2025Q3
- +79,147 · 2025Q3
- +30,000 · 2024Q3
- +21,371 · 2025Q2
- +327,067 · 2025Q2
- −30,000 · 2025Q1
- +194,108 · 2025Q1
- −194,108 · 2024Q4
- +194,108 · 2024Q3
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