Ticker · CUSIP 03168L105
Holders (tracked)
10
Combined shares
14,712,982
Combined value
$185.38M
Last close
$13.91
Quarter
2025Q4
Price · 1Y$13.91+6.55 (+88.99%)H $15.19 · L $7.13 · Avg Vol 1.9M
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
Price is +10.4% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
18 events
- D.E. Shaw & Co. added2026-02-17+1,096,643 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) added2026-02-17+446,438 shares · 2025Q4Position
- Two Sigma Investments added2026-02-17+231,494 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2026-02-17+27,447 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+7,015 shares · 2025Q4Position
- +53,288 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−1,916 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+32,096 shares · 2025Q4Position
- Renaissance Technologies trimmed2026-02-12−73,500 shares · 2025Q4Position
- Norges Bank (Norway SWF) opened position2026-02-10+889,500 shares · 2025Q4Position
- AQR Capital Management trimmed2025-11-14−5,089 shares · 2025Q3Position
- Two Sigma Investments added2025-11-14+51,789 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−1,710,276 shares · 2025Q3Position
- D.E. Shaw & Co. added2025-11-14+641,567 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+7,040 shares · 2025Q3Position
- Wellington Management added2025-11-14+460 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−338,100 shares · 2025Q3Position
- Norges Bank (Norway SWF) exited2025-11-12−86,200 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of AMRX…
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 |
|---|---|---|---|---|
| Renaissance Technologies | 2018Q3 | $6.14 | +126.4% | $228K |
| AQR Capital Management | 2018Q2 | $6.63 | +109.7% | $14.6M |
| T. Rowe Price | 2018Q2 | $7.53 | +84.7% | $2.0M |
| Izzy Englander (Millennium Mgmt) | 2018Q2 | $8.02 | +73.5% | $46.7M |
| Paul Tudor Jones (Tudor Investment) | 2021Q1 | $8.23 | +69.0% | $741K |
| D.E. Shaw & Co. | 2018Q2 | $10.38 | +34.0% | $37.0M |
| Wellington Management | 2018Q2 | $10.41 | +33.6% | $892K |
| Norges Bank (Norway SWF) | 2018Q2 | $11.81 | +17.8% | $12.4M |
| Two Sigma Investments | 2019Q2 | $11.85 | +17.4% | $4.2M |
| Ken Griffin (Citadel Advisors) | 2019Q1 | $12.59 | +10.5% | $85.9M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Norges Bank (Norway SWF)+889,500$11.2M
- Paul Tudor Jones (Tudor Investment)+53,288$671K
Added to6
- D.E. Shaw & Co.+1,096,643$13.8M
- Ken Griffin (Citadel Advisors)+446,438$5.6M
- Two Sigma Investments+231,494$2.9M
- AQR Capital Management+32,096$404K
- Izzy Englander (Millennium Mgmt)+27,447$346K
- T. Rowe Price+7,015$88
Trimmed2
- Renaissance Technologies−73,500$926K
- Wellington Management−1,916$24K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 14 | $1.88B |
| 2022Q2 | 9 | $44.9M |
| 2022Q3 | 9 | $30.1M |
| 2022Q4 | 11 | $38.3M |
| 2023Q1 | 11 | $21.3M |
| 2023Q2 | 10 | $42.1M |
| 2023Q3 | 11 | $58.7M |
| 2023Q4 | 8 | $101.3M |
| 2024Q1 | 11 | $99.9M |
| 2024Q2 | 12 | $151.1M |
| 2024Q3 | 9 | $91.3M |
| 2024Q4 | 8 | $92.9M |
| 2025Q1 | 12 | $100.9M |
| 2025Q2 | 10 | $108.1M |
| 2025Q3 | 9 | $120.4M |
| 2025Q4 | 10 | $185.4M |
Who owns AMRX
10 super-investors · 2025Q4
Tracked stake
14.71M
shares
Combined value
$185M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added6Trim2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 6.18M | $78M |
| 2 | Izzy Englander Millennium Mgmt | 3.36M | $42M |
| 3 | D.E. Shaw & Co. | 2.66M | $34M |
| 4 | AQR Capital Management | 1.05M | $13M |
| 5 | Norges Bank Norway SWF | 889.5K | $11M |
| 6 | Two Sigma Investments | 301.0K | $4M |
| 7 | T. Rowe Price | 144.7K | $2M |
| 8 | Wellington Management | 64.2K | $808K |
| 9 | Paul Tudor Jones Tudor Investment | 53.3K | $671K |
| 10 | Renaissance Technologies | 16.4K | $207K |
Recent moves
20 transactions
- +1,096,643 · 2025Q4
- +32,096 · 2025Q4
- −1,916 · 2025Q4
- +7,015 · 2025Q4
- +53,288 · 2025Q4
- +27,447 · 2025Q4
- +446,438 · 2025Q4
- +231,494 · 2025Q4
- −73,500 · 2025Q4
- +889,500 · 2025Q4
- −5,089 · 2025Q3
- −1,710,276 · 2025Q3
- +7,040 · 2025Q3
- +460 · 2025Q3
- +641,567 · 2025Q3
- +51,789 · 2025Q3
- −338,100 · 2025Q3
- −86,200 · 2024Q3
- −446,000 · 2025Q2
- −149,955 · 2025Q2
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