Harry Burn
REGN icon

Harry Burn’s Regeneron Pharmaceuticals REGN Stock Holding History

Harry Burn’s Portfolio REGN Stock Details REGN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$95.7M Sell
126,179
-815
-0.6% -$616K 2.99% 6
2026
Q2 		$79.2M Sell
126,994
-23,966
-16% -$16.3M 2.44% 26
2026
Q1 		$117M Sell
150,960
-24,927
-14% -$19.1M 3.91% 2
2025
Q4 		$136M Buy
175,887
+60,859
+53% +$41.3M 4.32% 1
2025
Q3 		$64.7M Buy
+115,028
New +$65M 2.14% 35

Other funds holding REGN

State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $420B AUM 34.97% 1-Year Est. Return
Amundi
Amundi Paris, France $496B AUM 35.36% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $362B AUM 34.89% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Nordea Investment Management
Nordea Investment Management Stockholm, Sweden $127B AUM 33.25% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return

Harry Burn's REGN Position: Q3 2026 in Review

Harry Burn reduced its Regeneron Pharmaceuticals (REGN) stake by 0.64% in Q3 2026, selling an estimated $616K and leaving 126,179 shares worth $95.7M. The position accounts for 2.99% of the portfolio, ranked #6.

Harry Burn first reported a position in REGN in Q3 2025 and has held it in 5 quarters since. The position peaked at $136M in Q4 2025. 915 funds tracked by Wall St. Rank hold REGN as of Q3 2026.

  • Harry Burn held 126,179 shares of Regeneron Pharmaceuticals worth $95.7M as of Q3 2026.
  • Harry Burn sold 815 Regeneron Pharmaceuticals shares in Q3 2026, an estimated $616K.
  • Regeneron Pharmaceuticals made up 2.99% of Harry Burn's portfolio in Q3 2026, its #6 holding.
  • Harry Burn first reported a position in Regeneron Pharmaceuticals in Q3 2025 and has held it in 5 quarters since.
  • Harry Burn's Regeneron Pharmaceuticals position peaked at $136M in Q4 2025.
  • 915 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q3 2026.

Based on Sound Shore Management's 13F filing for Q3 2026, filed 6 Nov 2026.