XT
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XTX Topco’s Regeneron Pharmaceuticals REGN Stock Holding History

XTX Topco’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
Q2 		$19M Buy
30,522
+30,203
+9,468% +$20.6M 0.25% 23
2026
Q1 		$246K Buy
+319
New +$244K ﹤0.01% 2663
2025
Q3 		– Sell
-15,305
Closed -$8.04M – 3147
2025
Q2 		$8.04M Buy
15,305
+11,667
+321% +$6.51M 0.33% 25
2025
Q1 		$2.31M Buy
3,638
+1,558
+75% +$1.07M 0.12% 206
2024
Q4 		$1.48M Buy
2,080
+1,274
+158% +$1.07M 0.12% 150
2024
Q3 		$847K Sell
806
-251
-24% -$279K 0.06% 505
2024
Q2 		$1.11M Sell
1,057
-2,364
-69% -$2.29M 0.1% 318
2024
Q1 		$3.29M Buy
3,421
+1,671
+95% +$1.59M 0.44% 5
2023
Q4 		$1.54M Buy
1,750
+726
+71% +$598K 0.34% 11
2023
Q3 		$843K Buy
+1,024
New +$805K 0.14% 155
2023
Q2 		– Sell
-3,210
Closed -$2.64M – 1763
2023
Q1 		$2.64M Buy
3,210
+2,369
+282% +$1.79M 0.55% 2
2022
Q4 		$607K Buy
+841
New +$621K 0.13% 216
2022
Q3 		– Sell
-1,664
Closed -$984K – 1336
2022
Q2 		$984K Sell
1,664
-304
-15% -$198K 0.4% 29
2022
Q1 		$1.37M Buy
+1,968
New +$1.25M 0.6% 16
2021
Q3 		– Sell
-1,876
Closed -$1.05M – 1000
2021
Q2 		$1.05M Buy
1,876
+446
+31% +$226K 0.35% 35
2021
Q1 		$677K Buy
+1,430
New +$696K 0.33% 37

Other funds holding REGN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dodge & Cox
Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

XTX Topco's REGN Position: Q2 2026 in Review

XTX Topco increased its Regeneron Pharmaceuticals (REGN) stake by 9,468% in Q2 2026, buying an estimated $20.6M and bringing the position to 30,522 shares worth $19M. The position accounts for 0.25% of the portfolio, ranked #23.

XTX Topco first reported a position in REGN in Q1 2021 and has held it in 16 quarters since. 1,335 funds tracked by Wall St. Rank hold REGN as of Q2 2026.

  • XTX Topco held 30,522 shares of Regeneron Pharmaceuticals worth $19M as of Q2 2026.
  • XTX Topco bought 30,203 Regeneron Pharmaceuticals shares in Q2 2026, an estimated $20.6M.
  • Regeneron Pharmaceuticals made up 0.25% of XTX Topco's portfolio in Q2 2026, its #23 holding.
  • XTX Topco first reported a position in Regeneron Pharmaceuticals in Q1 2021 and has held it in 16 quarters since.
  • 1,335 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.