Ticker · CUSIP 013091103
Holders (tracked)
16
Combined shares
49,869,460
Combined value
$856.26M
Last close
$16.70
Quarter
2025Q4
Price · 1Y$16.70-4.35 (-20.68%)H $22.20 · L $15.95 · Avg Vol 7.0M
Congress buyCongress sell
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
Price is -2.7% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
29 events
- T. Rowe Price added2026-02-17+13,137 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−10,600 shares · 2025Q4Position
- D.E. Shaw & Co. trimmed2026-02-17−158,337 shares · 2025Q4Position
- Jeremy Grantham (GMO) trimmed2026-02-17−879,122 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+139,929 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−2,408,518 shares · 2025Q4Position
- Two Sigma Investments opened position2026-02-17+120,859 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−2,592,232 shares · 2025Q4Position
- Steve Cohen (Point72) trimmed2026-02-17−181,100 shares · 2025Q4Position
- Ray Dalio (Bridgewater Associates) added2026-02-13+157,819 shares · 2025Q4Position
- Southeastern Asset (Longleaf) added2026-02-13+1,222,843 shares · 2025Q4Position
- Renaissance Technologies exited2026-02-12−1,027,080 shares · 2025Q4Position
- Norges Bank (Norway SWF) opened position2026-02-10+22,602,710 shares · 2025Q4Position
- Mario Gabelli (GAMCO) trimmed2026-02-05−8,600 shares · 2025Q4Position
- −65,400 shares · 2025Q3Position
- AQR Capital Management added2025-11-14+813,190 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+1,542,125 shares · 2025Q3Position
- Steve Cohen (Point72) exited2025-11-14−419,016 shares · 2025Q3Position
- D.E. Shaw & Co. trimmed2025-11-14−39,811 shares · 2025Q3Position
- Lee Ainslie (Maverick Capital) exited2025-11-14−64,941 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+16,764 shares · 2025Q3Position
- Wellington Management trimmed2025-11-14−1,438,372 shares · 2025Q3Position
- Southeastern Asset (Longleaf) added2025-11-14+1,481,692 shares · 2025Q3Position
- Norges Bank (Norway SWF) exited2025-11-13−14,905,288 shares · 2025Q3Position
- Ray Dalio (Bridgewater Associates) added2025-11-13+49,158 shares · 2025Q3Position
- Renaissance Technologies added2025-11-13+262,845 shares · 2025Q3Position
- Jeremy Grantham (GMO) added2025-11-13+918,794 shares · 2025Q3Position
- Mario Gabelli (GAMCO) trimmed2025-11-12−4,300 shares · 2025Q3Position
- Norges Bank (Norway SWF) added2025-11-12+1,530,653 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ACI…
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) | 2020Q2 | $17.18 | -2.8% | $26.0M |
| Izzy Englander (Millennium Mgmt) | 2020Q2 | $17.18 | -2.8% | $26.0M |
| Ken Griffin (Citadel Advisors) | 2020Q2 | $17.19 | -2.8% | $7.7M |
| Ken Griffin (Citadel Advisors) | 2020Q2 | $17.19 | -2.8% | $7.7M |
| Ken Griffin (Citadel Advisors) | 2020Q2 | $17.19 | -2.8% | $7.7M |
| Jeremy Grantham (GMO) | 2022Q4 | $17.77 | -6.0% | $2.1M |
| Southeastern Asset (Longleaf) | 2024Q3 | $18.33 | -8.9% | $103.0M |
| Ray Dalio (Bridgewater Associates) | 2021Q2 | $19.67 | -15.1% | $6.8M |
| T. Rowe Price | 2021Q3 | $19.94 | -16.3% | $5.2M |
| Steve Cohen (Point72) | 2020Q2 | $20.42 | -18.2% | $4.2M |
| AQR Capital Management | 2021Q3 | $21.18 | -21.1% | $107.3M |
| Mario Gabelli (GAMCO) | 2022Q4 | $21.19 | -21.2% | $1.4M |
| D.E. Shaw & Co. | 2020Q3 | $21.40 | -22.0% | $1.4M |
| Wellington Management | 2021Q2 | $21.95 | -23.9% | $684K |
| Two Sigma Investments | 2021Q2 | $23.67 | -29.5% | $2.0M |
| Norges Bank (Norway SWF) | 2020Q2 | $581.81 | -97.1% | $377.5M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Norges Bank (Norway SWF)+22,602,710$388.1M
- Two Sigma Investments+120,859$2.1M
Added to4
- Southeastern Asset (Longleaf)+1,222,843$21.0M
- Ray Dalio (Bridgewater Associates)+157,819$2.7M
- AQR Capital Management+139,929$2.4M
- T. Rowe Price+13,137$226
Trimmed7
- Izzy Englander (Millennium Mgmt)−2,592,232$44.5M
- Ken Griffin (Citadel Advisors)−2,408,518$41.4M
- Jeremy Grantham (GMO)−879,122$15.1M
- Steve Cohen (Point72)−181,100$3.1M
- D.E. Shaw & Co.−158,337$2.7M
- Wellington Management−10,600$182K
- Mario Gabelli (GAMCO)−8,600$148K
Exited1
- Renaissance Technologies−1,027,080$18.0M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 17 | $20.80B |
| 2022Q2 | 16 | $15.45B |
| 2022Q3 | 16 | $618.7M |
| 2022Q4 | 15 | $486.7M |
| 2023Q1 | 19 | $724.0M |
| 2023Q2 | 16 | $920.4M |
| 2023Q3 | 16 | $1.01B |
| 2023Q4 | 16 | $1.06B |
| 2024Q1 | 15 | $1.03B |
| 2024Q2 | 16 | $954.8M |
| 2024Q3 | 20 | $682.6M |
| 2024Q4 | 21 | $854.6M |
| 2025Q1 | 17 | $534.1M |
| 2025Q2 | 20 | $730.2M |
| 2025Q3 | 17 | $565.6M |
| 2025Q4 | 16 | $856.3M |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-09-11 | Lisa McClain | Buy | $1K – $15K | PDF ↗ |
| 2025-08-26 | Julia Letlow | Sell | $1K – $15K | PDF ↗ |
| 2025-07-22 | Lisa McClain | Sell | $1K – $15K | PDF ↗ |
| 2025-07-16 | Lisa McClain | Buy | $1K – $15K | PDF ↗ |
| 2025-01-24 | Julia Letlow | Buy | $1K – $15K | PDF ↗ |
Who owns ACI
16 super-investors · 2025Q4
Tracked stake
49.87M
shares
Combined value
$856M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added4Trim10
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Norges Bank Norway SWF | 22.60M | $388M |
| 2 | Ken Griffin Citadel Advisors | 10.14M | $174M |
| 3 | AQR Capital Management | 6.42M | $110M |
| 4 | Southeastern Asset Longleaf | 6.17M | $106M |
| 5 | Izzy Englander Millennium Mgmt | 1.55M | $27M |
| 6 | Izzy Englander Millennium Mgmt | 642.0K | $11M |
| 7 | Ken Griffin Citadel Advisors | 463.2K | $8M |
| 8 | Ken Griffin Citadel Advisors | 450.1K | $8M |
| 9 | Ray Dalio Bridgewater Associates | 404.6K | $7M |
| 10 | T. Rowe Price | 312.6K | $5M |
| 11 | Steve Cohen Point72 | 253.5K | $4M |
| 12 | Jeremy Grantham GMO | 127.0K | $2M |
| 13 | Two Sigma Investments | 120.9K | $2M |
| 14 | Mario Gabelli GAMCO | 86.5K | $1M |
| 15 | D.E. Shaw & Co. | 82.5K | $1M |
| 16 | Wellington Management | 41.0K | $704K |
Recent moves
20 transactions
- TRIMD.E. Shaw & Co.−158,337 · 2025Q4
- +13,137 · 2025Q4
- −10,600 · 2025Q4
- −879,122 · 2025Q4
- +120,859 · 2025Q4
- +139,929 · 2025Q4
- −2,408,518 · 2025Q4
- −2,592,232 · 2025Q4
- −181,100 · 2025Q4
- +1,222,843 · 2025Q4
- +157,819 · 2025Q4
- −1,027,080 · 2025Q4
- +22,602,710 · 2025Q4
- −8,600 · 2025Q4
- −65,400 · 2025Q3
- TRIMD.E. Shaw & Co.−39,811 · 2025Q3
- +1,542,125 · 2025Q3
- −419,016 · 2025Q3
- −64,941 · 2025Q3
- +16,764 · 2025Q3
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