Ticker · CUSIP 04965M106
Holders (tracked)
12
Combined shares
3,997,166
Combined value
$155.60M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+3 vs previous quarter over the last 8.
SEC event timeline
18 events
- T. Rowe Price trimmed2026-02-17−3,439 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−290,731 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−582,183 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−127,457 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+63,400 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−5,142 shares · 2025Q413F
- Dodge & Cox opened position2026-02-13+28,152 shares · 2025Q413F
- Renaissance Technologies added2026-02-12+256,600 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+618,344 shares · 2025Q413F
- Baillie Gifford & Co opened position2026-01-23+176,975 shares · 2025Q413F
- Two Sigma Investments opened position2025-11-14+13,400 shares · 2025Q313F
- Wellington Management trimmed2025-11-14−15,590 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−397,634 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−42,856 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+711,660 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+132,600 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−849,806 shares · 2025Q313F
- Norges Bank (Norway SWF) trimmed2025-11-12−452,400 shares · 2024Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions3
- Norges Bank (Norway SWF)+618,344$24.4M
- Baillie Gifford & Co+176,975$7.0M
- Dodge & Cox+28,152$1.1M
Added to2
- Renaissance Technologies+256,600$10.1M
- Two Sigma Investments+63,400$2.5M
Trimmed5
- Izzy Englander (Millennium Mgmt)−582,183$22.9M
- D.E. Shaw & Co.−290,731$11.5M
- Wellington Management−127,457$5.0M
- Ken Griffin (Citadel Advisors)−5,142$203K
- T. Rowe Price−3,439$136
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q4 | 3 | $10.0M |
| 2023Q1 | 2 | $18.9M |
| 2023Q2 | 6 | $21.1M |
| 2023Q3 | 6 | $10.1M |
| 2023Q4 | 9 | $44.7M |
| 2024Q1 | 8 | $39.8M |
| 2024Q2 | 8 | $54.7M |
| 2024Q3 | 10 | $74.4M |
| 2024Q4 | 9 | $124.6M |
| 2025Q1 | 9 | $98.6M |
| 2025Q2 | 8 | $136.1M |
| 2025Q3 | 9 | $143.6M |
| 2025Q4 | 12 | $155.6M |
Who owns ATAT
12 super-investors · 2025Q4
Tracked stake
4.00M
shares
Combined value
$156M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added2Trim7
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 2.18M | $86M |
| 2 | Norges Bank Norway SWF | 618.3K | $24M |
| 3 | Izzy Englander Millennium Mgmt | 470.2K | $19M |
| 4 | Ken Griffin Citadel Advisors | 187.2K | $7M |
| 5 | Baillie Gifford & Co | 177.0K | $7M |
| 6 | Wellington Management | 158.3K | $6M |
| 7 | Two Sigma Investments | 76.8K | $3M |
| 8 | D.E. Shaw & Co. | 30.0K | $1M |
| 9 | Dodge & Cox | 28.2K | $1M |
| 10 | Ken Griffin Citadel Advisors | 19.0K | $749K |
| 11 | Ken Griffin Citadel Advisors | 5.1K | $201K |
| 12 | T. Rowe Price | 48.1K | $2K |
Recent moves
20 transactions
- −127,457 · 2025Q4
- +63,400 · 2025Q4
- −582,183 · 2025Q4
- TRIMD.E. Shaw & Co.−290,731 · 2025Q4
- −5,142 · 2025Q4
- TRIMT. Rowe Price−3,439 · 2025Q4
- NEWDodge & Cox+28,152 · 2025Q4
- +256,600 · 2025Q4
- +618,344 · 2025Q4
- +176,975 · 2025Q4
- TRIMD.E. Shaw & Co.−397,634 · 2025Q3
- TRIMT. Rowe Price−42,856 · 2025Q3
- −15,590 · 2025Q3
- +711,660 · 2025Q3
- +13,400 · 2025Q3
- −849,806 · 2025Q3
- +132,600 · 2025Q3
- −452,400 · 2024Q3
- −581,105 · 2025Q2
- +183,012 · 2025Q2
Embed this chart
Paste this iframe anywhere to embed the live ATAT chart.
<iframe src="https://openstocks.me/embed/stock/ATAT" width="100%" height="480" frameborder="0" loading="lazy" title="ATAT chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>