Ticker · CUSIP 04965B100
Holders (tracked)
6
Combined shares
429,164
Combined value
$837.8K
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-2 vs previous quarter over the last 8.
SEC event timeline
10 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−104,305 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−56,640 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+90,386 shares · 2025Q413F
- AQR Capital Management added2026-02-17+4,475 shares · 2025Q413F
- Renaissance Technologies exited2026-02-12−60,300 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) exited2025-11-14−318,614 shares · 2025Q313F
- AQR Capital Management opened position2025-11-14+17,735 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−8,357 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−226,273 shares · 2025Q313F
- Renaissance Technologies opened position2025-11-13+60,300 shares · 2025Q313F
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 positions0
—
Added to2
- Two Sigma Investments+90,386$200K
- AQR Capital Management+4,475$10K
Trimmed2
- Ken Griffin (Citadel Advisors)−104,305$231K
- D.E. Shaw & Co.−56,640$125K
Exited1
- Renaissance Technologies−60,300$267K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 5 | $22.2M |
| 2022Q2 | 5 | $15.0M |
| 2022Q3 | 6 | $17K |
| 2022Q4 | 8 | $10.3M |
| 2023Q1 | 9 | $10.0M |
| 2023Q2 | 8 | $19.5M |
| 2023Q3 | 9 | $12.9M |
| 2023Q4 | 6 | $13.1M |
| 2024Q1 | 5 | $10.7M |
| 2024Q2 | 9 | $3.5M |
| 2024Q3 | 8 | $1.1M |
| 2024Q4 | 6 | $3.9M |
| 2025Q1 | 7 | $3.8M |
| 2025Q2 | 7 | $6.1M |
| 2025Q3 | 8 | $2.6M |
| 2025Q4 | 6 | $838K |
Who owns ATOM
6 super-investors · 2025Q4
Tracked stake
429.2K
shares
Combined value
$838K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added2Trim3Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Two Sigma Investments | 181.3K | $401K |
| 2 | Ken Griffin Citadel Advisors | 79.3K | $175K |
| 3 | D.E. Shaw & Co. | 58.5K | $129K |
| 4 | Ken Griffin Citadel Advisors | 37.7K | $83K |
| 5 | AQR Capital Management | 22.2K | $49K |
| 6 | T. Rowe Price | 50.1K | $111 |
Recent moves
20 transactions
- +90,386 · 2025Q4
- −104,305 · 2025Q4
- +4,475 · 2025Q4
- TRIMD.E. Shaw & Co.−56,640 · 2025Q4
- −60,300 · 2025Q4
- +17,735 · 2025Q3
- −318,614 · 2025Q3
- −8,357 · 2025Q3
- TRIMD.E. Shaw & Co.−226,273 · 2025Q3
- +60,300 · 2025Q3
- −83,065 · 2025Q2
- +63,414 · 2025Q2
- +14,139 · 2025Q2
- +264,736 · 2025Q2
- +243,941 · 2025Q1
- +19,803 · 2025Q1
- +76,671 · 2025Q1
- TRIMT. Rowe Price−18,400 · 2025Q1
- +39,188 · 2024Q4
- SOLDD.E. Shaw & Co.−30,972 · 2024Q4
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