Jazz Pharmaceuticals plc (JAZZ) Institutional Ownership

Ownership Summary

Jazz Pharmaceuticals plc (NASDAQ:JAZZ) showed up in the 13F filings of 556 institutional investors as of December 2025.

• Collectively, these holders controlled 104.2% of Jazz Pharmaceuticals's outstanding shares in December 2025, up from 103.1% in September 2025.
• They increased total shares held in Jazz Pharmaceuticals by 2.28% from the prior quarter, while the number of investors in JAZZ increased 11.2% year over year.
• Activity in JAZZ broke down as 295 buyers, 192 sellers, and 69 unchanged among 556 total holders.
• Institutional investors collectively held 64.21Mn shares in Jazz Pharmaceuticals as of December 2025, up by 1.43Mn shares quarter on quarter, and up 3.54Mn shares year over year.
• BlackRock, Inc. is the top holder of Jazz Pharmaceuticals as of December 31, 2025, with 5.59Mn shares representing 9.08% of outstanding stock.
• The most significant purchases of JAZZ for the quarter ending December 2025 came from VANGUARD PORTFOLIO MANAGEMENT LLC (2.98Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.65Mn), FMR LLC (1.47Mn), CITADEL ADVISORS LLC (948.32K), Bank of New York Mellon Corp (517.51K).
• Leading sellers of Jazz Pharmaceuticals shares for the quarter ending December 2025 were FULLER & THALER ASSET MANAGEMENT, INC. (1.68Mn), Swedbank AB (1.21Mn), DIMENSIONAL FUND ADVISORS LP (728.09K), Sofinnova Investments, Inc. (361.53K), Rockefeller Capital Management L.P. (280.95K).
• Per Business Quant, the top 10 investors in JAZZ for the quarter ending December 2025 include BlackRock, Inc. (5.59Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.98Mn), Capital World Investors (2.67Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.65Mn), LSV ASSET MANAGEMENT (2.39Mn), FMR LLC (2.28Mn), Franklin Resources Inc (1.96Mn), DIMENSIONAL FUND ADVISORS LP (1.9Mn), State Street Corp (1.89Mn), EcoR1 Capital, LLC (1.71Mn).