Ticker · CUSIP 03980N107
Holders (tracked)
9
Combined shares
1,920,466
Combined value
$16.96M
Last close
$9.91
Quarter
2025Q4
Price · 1Y$9.91-2.60 (-20.78%)H $15.41 · L $8.17 · Avg Vol 420K
Position opened
Tracked holders · last 8 quarters
+3 vs previous quarter over the last 6.
Price is +12.2% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
16 events
- Two Sigma Investments opened position2026-02-17+127,826 shares · 2025Q4Position
- Steve Cohen (Point72) trimmed2026-02-17−95,585 shares · 2025Q4Position
- D.E. Shaw & Co. opened position2026-02-17+75,025 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+413,122 shares · 2025Q4Position
- +239,632 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−642,170 shares · 2025Q4Position
- Renaissance Technologies exited2026-02-12−10,700 shares · 2025Q4Position
- AQR Capital Management added2025-11-14+136,058 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+78,861 shares · 2025Q3Position
- Daniel Loeb (Third Point) exited2025-11-14−75,000 shares · 2025Q3Position
- Steve Cohen (Point72) trimmed2025-11-14−287,115 shares · 2025Q3Position
- Two Sigma Investments exited2025-11-14−23,199 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+19,964 shares · 2025Q3Position
- Wellington Management exited2025-11-14−26,595 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−59,800 shares · 2025Q3Position
- Norges Bank (Norway SWF) opened position2025-11-12+150,000 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ARDT…
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 |
|---|---|---|---|---|
| D.E. Shaw & Co. | 2025Q4 | $8.83 | +12.2% | $743K |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $9.18 | +8.0% | $108K |
| Ken Griffin (Citadel Advisors) | 2024Q3 | $9.18 | +8.0% | $108K |
| AQR Capital Management | 2025Q2 | $10.09 | -1.7% | $5.7M |
| Two Sigma Investments | 2024Q3 | $10.14 | -2.3% | $1.3M |
| Izzy Englander (Millennium Mgmt) | 2024Q3 | $11.46 | -13.6% | $6.2M |
| Izzy Englander (Millennium Mgmt) | 2024Q3 | $11.46 | -13.6% | $6.2M |
| T. Rowe Price | 2025Q1 | $13.45 | -26.3% | $313K |
| Steve Cohen (Point72) | 2024Q3 | $18.29 | -45.8% | $130K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions3
- Ken Griffin (Citadel Advisors)+239,632$2.1M
- Two Sigma Investments+127,826$1.1M
- D.E. Shaw & Co.+75,025$662K
Added to1
- AQR Capital Management+413,122$3.6M
Trimmed2
- Izzy Englander (Millennium Mgmt)−642,170$5.7M
- Steve Cohen (Point72)−95,585$844K
Exited1
- Renaissance Technologies−10,700$142K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q3 | 9 | $115.4M |
| 2024Q4 | 8 | $74.5M |
| 2025Q1 | 9 | $31.2M |
| 2025Q2 | 9 | $25.5M |
| 2025Q3 | 6 | $21.2M |
| 2025Q4 | 9 | $17.0M |
Who owns ARDT
9 super-investors · 2025Q4
Tracked stake
1.92M
shares
Combined value
$17M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New4Added1Trim3Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 627.4K | $6M |
| 2 | AQR Capital Management | 573.9K | $5M |
| 3 | Ken Griffin Citadel Advisors | 239.6K | $2M |
| 4 | Izzy Englander Millennium Mgmt | 221.0K | $2M |
| 5 | Two Sigma Investments | 127.8K | $1M |
| 6 | D.E. Shaw & Co. | 75.0K | $662K |
| 7 | T. Rowe Price | 31.5K | $279K |
| 8 | Steve Cohen Point72 | 13.2K | $116K |
| 9 | Ken Griffin Citadel Advisors | 10.9K | $96K |
Recent moves
20 transactions
- −95,585 · 2025Q4
- +127,826 · 2025Q4
- +239,632 · 2025Q4
- −642,170 · 2025Q4
- +75,025 · 2025Q4
- +413,122 · 2025Q4
- −10,700 · 2025Q4
- −287,115 · 2025Q3
- −75,000 · 2025Q3
- −23,199 · 2025Q3
- +78,861 · 2025Q3
- +136,058 · 2025Q3
- +19,964 · 2025Q3
- −26,595 · 2025Q3
- −59,800 · 2025Q3
- +150,000 · 2024Q3
- +75,000 · 2025Q2
- +231,749 · 2025Q2
- +11,436 · 2025Q2
- −255,778 · 2025Q2
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