SEC 13F Intelligence

Rock Springs Capital Management LP / NBIX

Rock Springs Capital Management LP’s Neurocrine Biosciences Inc Position

Does Rock Springs Capital Management LP own Neurocrine Biosciences Inc (NBIX)? Yes — 150.4K shares worth $20M (+1.17% of its 13F portfolio) as of Q1 2026, up from 125.5K shares the prior filed quarter.

Position Value
$20M
Q1 2026
Shares
150.4K
% of Portfolio
+1.17%
Quarters Held
30
currently held

Position History NBIX

Reported value by quarter
Q4 ’18: $56MQ4 ’18Q1 ’19: $74MQ2 ’19: $86MQ3 ’19: $111MQ4 ’19: $137MQ4 ’19Q1 ’20: $117MQ2 ’20: $167MQ3 ’20: $141MQ4 ’20: $151MQ4 ’20Q1 ’21: $99MQ2 ’21: $99MQ3 ’21: $101MQ4 ’21: $94MQ4 ’21Q1 ’22: $104MQ2 ’22: $109MQ3 ’22: $119MQ4 ’22: $134MQ4 ’22Q1 ’23: $122MQ2 ’23: $121MQ3 ’23: $139MQ4 ’23: $158MQ4 ’23Q1 ’24: $145MQ2 ’24: $129MQ3 ’24: $108MQ4 ’24: $98MQ4 ’24Q1 ’25: $31MQ2 ’25: $11MQ3 ’25: $13MQ4 ’25: $18MQ4 ’25Q1 ’26: $20Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 2026150.4K$20M+1.17%
Q4 2025125.5K$18M+0.91%
Q3 202589.8K$13M+0.74%
Q2 202588.8K$11M+0.70%
Q1 2025279.0K$31M+1.77%
Q4 2024720.5K$98M+3.74%
Q3 2024939.0K$108M+3.52%
Q2 2024940.0K$129M+3.90%
Q1 20241.05M$145M+3.69%
Q4 20231.20M$158M+3.88%
Q3 20231.24M$139M+3.72%
Q2 20231.28M$121M+2.87%
Q1 20231.21M$122M+2.92%
Q4 20221.12M$134M+3.23%
Q3 20221.12M$119M+3.08%
Q2 20221.12M$109M+3.18%
Q1 20221.10M$104M+2.61%
Q4 20211.10M$94M+2.17%
Q3 20211.05M$101M+2.12%
Q2 20211.01M$99M+1.95%
Q1 20211.01M$99M+2.15%
Q4 20201.57M$151M+3.20%
Q3 20201.47M$141M+3.58%
Q2 20201.37M$167M+4.57%
Q1 20201.35M$117M+4.83%
Q4 20191.28M$137M+4.34%
Q3 20191.23M$111M+4.43%
Q2 20191.02M$86M+3.12%
Q1 2019844.5K$74M+2.87%
Q4 2018788.6K$56M+2.66%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rock Springs Capital Management LP’s full portfolio or all institutional holders of NBIX.