Mason Hawkins’s Regeneron Pharmaceuticals REGN Stock Holding History
Bought
Maintained
Sold
Other funds holding REGN
Mason Hawkins's REGN Position: Q2 2026 in Review
Mason Hawkins increased its Regeneron Pharmaceuticals (REGN) stake by 17% in Q2 2026, buying an estimated $14.7M and bringing the position to 152,322 shares worth $95M. The position accounts for 4.95% of the portfolio, ranked #6.
Mason Hawkins first reported a position in REGN in Q1 2025 and has held it in 6 quarters since. The position peaked at $128M in Q4 2025. 1,328 funds tracked by Wall St. Rank hold REGN as of Q2 2026.
- Mason Hawkins held 152,322 shares of Regeneron Pharmaceuticals worth $95M as of Q2 2026.
- Mason Hawkins bought 21,660 Regeneron Pharmaceuticals shares in Q2 2026, an estimated $14.7M.
- Regeneron Pharmaceuticals made up 4.95% of Mason Hawkins's portfolio in Q2 2026, its #6 holding.
- Mason Hawkins first reported a position in Regeneron Pharmaceuticals in Q1 2025 and has held it in 6 quarters since.
- Mason Hawkins's Regeneron Pharmaceuticals position peaked at $128M in Q4 2025.
- 1,328 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q2 2026.
Based on Southeastern Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.