Jazz Pharmaceuticals plc
US ˙ NasdaqGS ˙ IE00B4Q5ZN47

SecurityJAZZ / Jazz Pharmaceuticals plc
InstitutionSei Investments Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Sei Investments Co closes position in JAZZ / Jazz Pharmaceuticals plc

On May 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 0 shares of Jazz Pharmaceuticals plc (US:JAZZ) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 231,000 shares of Jazz Pharmaceuticals plc. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 0 -110,400 -100.00 0 -100.00
2026-02-13 2025-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 110,400 10,144 10.12 18,768 42.03 0.0185
2025-11-13 2025-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 100,256 16,311 19.43 13,215 48.34 0.0142
2025-08-14 2025-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 83,945 17,088 25.56 8,909 7.34 0.0103
2025-05-14 2025-03-31 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 66,857 5,636 9.21 8,299 10.07 0.0107
2025-05-13 2025-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 66,026 4,805 8,162 0.0089
2025-02-11 2024-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 61,221 -26,878 -30.51 7,541 -32.68 0.0097
2024-11-12 2024-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 88,099 18,834 27.19 11,201 28.25 0.0145
2024-08-13 2024-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 69,265 26,232 60.96 8,735 62.95 0.0124
2024-05-07 2024-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 43,033 -548 -1.26 5,360 -4.20 0.0079
2024-02-14 2023-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 43,581 3,768 9.46 5,595 8.51 0.0090
2023-11-14 2023-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 39,813 -9,714 -19.61 5,156 -16.03 0.0093
2023-08-11 2023-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 49,527 -5,545 -10.07 6,141 -23.81 0.0107
2023-05-12 2023-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 55,072 -2,356 -4.10 8,059 -11.94 0.0150
2023-02-10 2022-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 57,428 7,975 16.13 9,153 38.81 0.0203
2022-11-14 2022-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 49,453 -2,273 -4.39 6,593 -17.33 0.0147
2022-08-15 2022-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 51,726 1,986 3.99 7,975 4.43 0.0172
2022-05-13 2022-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 49,740 -2,700 -5.15 7,637 14.00 0.0154
2022-02-14 2021-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 52,440 1,755 3.46 6,699 1.13 0.0126
2021-11-12 2021-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 50,685 -12,960 -20.36 6,624 -42.43 0.0139
2021-08-06 2021-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 63,645 18,220 40.11 11,505 50.57 0.0255
2021-05-12 2021-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 45,425 -10,574 -18.88 7,641 -18.82 0.0193
2021-02-08 2020-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 55,999 -9,634 -14.68 9,412 0.17 0.0243
2020-12-04 2020-09-30 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 65,633 3,703 5.98 9,396 38.14 0.0272
2020-11-06 2020-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 67,512 5,582 9,664 23,268.7633
2020-08-17 2020-06-30 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 61,930 6,108 10.94 6,802 21.73 0.0211
2020-08-11 2020-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 60,539 4,717 8,564 23,230.3059
2020-05-14 2020-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 55,822 -10,706 -16.09 5,588 -43.65 0.0205
2020-02-06 2019-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 66,528 7,589 12.88 9,916 29.60 0.0296
2019-11-12 2019-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 58,939 -2,708 -4.39 7,651 -13.17 0.0196
2019-08-14 2019-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 61,647 31,168 102.26 8,811 101.95 0.0288
2019-05-15 2019-03-31 13F JAZZ PHARMACEUTICALS S3 USD G50871105 30,479 14,331 88.75 4,363 77.94 0.0147
2019-02-13 2018-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 16,148 5,077 45.86 2,452 30.36 0.0087
2018-11-08 2018-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 11,071 -556 -4.78 1,881 -6.14 0.0068
2018-08-03 2018-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 11,627 1,929 19.89 2,004 36.89 0.0068
2018-05-11 2018-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 9,698 4,185 75.91 1,464 97.30 0.0056
2018-02-08 2017-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 5,513 -4,905 -47.08 742 -51.31 0.0026
2017-11-06 2017-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 10,418 5,711 121.33 1,524 107.91 0.0054
2017-07-31 2017-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 4,707 -6,020 -56.12 733 -52.92 0.0029
2017-05-05 2017-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 10,727 10,137 1,718.14 1,557 2,332.81 0.0068
2017-02-02 2016-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 590 -4,867 -89.19 64 -90.35 0.0003
2016-11-04 2016-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 5,457 -1,594 -22.61 663 -33.43 0.0034
2016-08-11 2016-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 7,051 168 2.44 996 10.91 0.0060
2016-05-10 2016-03-31 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 6,883 -2,222 -24.40 898 -29.84 0.0056
2016-02-03 2015-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 9,105 -9,840 -51.94 1,280 -49.11 0.0078
2015-11-02 2015-09-30 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 18,945 -4,521 -19.27 2,515 -39.13 0.0231
2015-10-30 2015-09-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 18,945 2,517
2015-08-07 2015-06-30 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 23,466 3,577 17.98 4,132 20.22 0.0374
2015-08-04 2015-06-30 13F JAZZ PHARMACEUTICALS SHS USD G50871105 23,466 3,577 4,132 0.0374
2015-05-14 2015-03-31 13F/A-1 JAZZ PHARMACEUTICALS SHS USD G50871105 19,889 1,687 9.27 3,437 15.34 0.0298
2015-05-01 2015-03-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 19,889 3,437
2015-02-10 2014-12-31 13F JAZZ PHARMACEUTICALS SHS USD G50871105 18,202 18,202 2,980 0.0263
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.