T. Rowe Price Investment Management, Inc.'s ownership history for IONS

T. Rowe Price Investment Management, Inc. currently holds 6.2M shares with a market value of $462.5K. It started holding IONS on 2024-12-31. At its peak, it held 16.2M shares on 2025-03-31. Its highest holding value was $684.3M on 2025-12-31. At its lowest, it held 6.2M shares on 2026-03-31, with a value of $462.5K on 2026-03-31. In the recent 180 days, T. Rowe Price Investment Management, Inc. has decreased its shares by 7.0M. In the recent year, T. Rowe Price Investment Management, Inc. has decreased its shares by 10.0M.