Ticker · CUSIP 021513106
Holders (tracked)
7
Combined shares
3,444,793
Combined value
$9.92M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
11 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−238,056 shares · 2025Q413F
- D.E. Shaw & Co. exited2026-02-17−649,674 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+803,088 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+261,584 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+357,467 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−369,521 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2025-11-14−417,173 shares · 2025Q313F
- T. Rowe Price exited2025-11-14−164,000 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−22,209 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−267 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+452,921 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 positions1
- Steve Cohen (Point72)+261,584$753K
Added to2
- Two Sigma Investments+803,088$2.3M
- Izzy Englander (Millennium Mgmt)+357,467$1.0M
Trimmed2
- Renaissance Technologies−369,521$1.1M
- Ken Griffin (Citadel Advisors)−238,056$686K
Exited1
- D.E. Shaw & Co.−649,674$702K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 11 | $75.3M |
| 2022Q2 | 10 | $38.8M |
| 2022Q3 | 10 | $38K |
| 2022Q4 | 10 | $30.8M |
| 2023Q1 | 10 | $15.2M |
| 2023Q2 | 11 | $16.5M |
| 2023Q3 | 11 | $25.4M |
| 2023Q4 | 8 | $8.9M |
| 2024Q1 | 8 | $6.7M |
| 2024Q2 | 9 | $8.4M |
| 2024Q3 | 8 | $5.9M |
| 2024Q4 | 8 | $5.7M |
| 2025Q1 | 8 | $4.1M |
| 2025Q2 | 8 | $3.3M |
| 2025Q3 | 7 | $3.4M |
| 2025Q4 | 7 | $9.9M |
Who owns ALTO
7 super-investors · 2025Q4
Tracked stake
3.44M
shares
Combined value
$10M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added2Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 1.52M | $4M |
| 2 | Two Sigma Investments | 839.5K | $2M |
| 3 | Izzy Englander Millennium Mgmt | 369.5K | $1M |
| 4 | Steve Cohen Point72 | 261.6K | $753K |
| 5 | Ken Griffin Citadel Advisors | 220.7K | $636K |
| 6 | Ken Griffin Citadel Advisors | 190.4K | $548K |
| 7 | Ken Griffin Citadel Advisors | 39.1K | $113K |
Recent moves
20 transactions
- −238,056 · 2025Q4
- +261,584 · 2025Q4
- +803,088 · 2025Q4
- +357,467 · 2025Q4
- SOLDD.E. Shaw & Co.−649,674 · 2025Q4
- −369,521 · 2025Q4
- SOLDT. Rowe Price−164,000 · 2025Q3
- −267 · 2025Q3
- TRIMD.E. Shaw & Co.−417,173 · 2025Q3
- −22,209 · 2025Q3
- +452,921 · 2025Q3
- −9,194 · 2025Q2
- TRIMD.E. Shaw & Co.−528,486 · 2025Q2
- −87,085 · 2025Q2
- TRIMT. Rowe Price−4,300 · 2025Q2
- +30,800 · 2025Q2
- −10,188 · 2025Q1
- −12,579 · 2025Q1
- TRIMD.E. Shaw & Co.−6,046 · 2025Q1
- −15,521 · 2025Q1
Embed this chart
Paste this iframe anywhere to embed the live ALTO chart.
<iframe src="https://openstocks.me/embed/stock/ALTO" width="100%" height="480" frameborder="0" loading="lazy" title="ALTO chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>