Which hedge funds own JAZZ? JAZZ PHARMACEUTICALS PLC, Q2 2026 13F holders
48 tracked hedge funds disclosed a position in JAZZ (JAZZ PHARMACEUTICALS PLC) in their Q2 2026 13F filings, worth $1.8bn in total. The largest holder by portfolio weight is Krensavage Asset Management, LLC at 15.4% of its book. 17 opened a new position this quarter: Ardsley Advisory Partners LP, Cercano Management LLC, Integral Health Asset Management, LLC, Ares Systematic Credit Ltd. 22 exited: EcoR1 Capital, LLC, Diadema Partners LP, HighVista Strategies LLC.
- 48
- Holders Tracked managers whose filing for the quarter reports a long equity position in the security.
- 17
- New this quarter Holders whose previous filing (at most two quarters earlier) did not report the security.
- 22
- Exited this quarter Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
- $81.2m
- Inflow, new holders Combined value of the positions the new holders reported for the quarter.
- $522m
- Outflow, exits Combined value the exiting managers reported for the security in their previous filing.
- $1.8bn
- Combined value Sum of the holders' reported positions in the security.
- 3.9%
- Share of managers holding Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.
Holders, Q2 2026
Exited since the previous filing
| EcoR1 Capital, LLC | 13.8% | $323m |
| Diadema Partners LP | 4.3% | $10.4m |
| HighVista Strategies LLC | 0.6% | $2.0m |
| Cinctive Capital Management LP | 0.4% | $6.6m |
| Ikarian Capital, LLC | 0.3% | $2.4m |
| Alyeska Investment Group, L.P. | 0.2% | $77.7m |
| Rokos Capital Management LLP | 0.2% | $9.8m |
| Point72 Asset Management, L.P. | 0.1% | $67.8m |
| Dark Forest Capital Management LP | 0.1% | $1.2m |
| Walleye Capital LLC | 0.1% | $16.5m |
| Rock Springs Capital Management LP | 0.06% | $1.1m |
| Bayforest Capital Ltd | 0.06% | $55.0k |
| Fox Run Management, L.L.C. | 0.05% | $287k |
| Campbell & CO Investment Adviser LLC | 0.04% | $681k |
| ADAR1 Capital Management, LLC | 0.03% | $567k |
| Graham Capital Management, L.P. | 0.03% | $871k |
| Mirabella Financial Services LLP | 0.03% | $294k |
| Entropy Technologies, LP | 0.03% | $556k |
| Qsemble Capital Management, LP | 0.02% | $230k |
| Boothbay Fund Management, LLC | 0.02% | $704k |
| Elequin Capital, LP | 0.0% | $24.0k |
| IFM Investors Pty Ltd | 0.0% | $3.0k |
Ownership over time
Who discovered JAZZ first? Beta
The run: Q1 2013 → Q2 2015, +215%
| Cadian Capital Management, LP high conviction | Q2 2016 | – | +3.3 pts |
| PFM Health Sciences, LP | Q1 2015 | – | +1.0 pts |
| Cormorant Asset Management, LP | Q1 2014 | – | +0.6 pts |
| Lone Pine Capital LLC | Q1 2014 | – | +0.3 pts |
| Sivik Global Healthcare LLC | Q2 2014 | – | 0.0 pts |
| Mariner Investment Group LLC | Q3 2014 | – | 0.0 pts |
| PointState Capital LP | Q2 2014 | – | −0.2 pts |
| Redmile Group, LLC | Q4 2013 | – | −1.1 pts |
Split-adjusted quarter-end prices, excluding dividends. They describe the stock while each manager held it, not the return it earned.