XT
REGN icon

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
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 $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

XTX Topco's REGN Position: Q1 2026 in Review

XTX Topco opened a new position in Regeneron Pharmaceuticals (REGN) in Q1 2026: 319 shares worth $246K. The stake represents ﹤0.01% of the portfolio and ranks #2663 among its holdings. This is a return to the name: XTX Topco previously reported a position in REGN as recently as Q2 2025.

XTX Topco first reported a position in REGN in Q1 2021 and has held it in 15 quarters since. The position peaked at $8.04M in Q2 2025. 1,392 funds tracked by Wall St. Rank hold REGN as of Q1 2026.

  • XTX Topco held 319 shares of Regeneron Pharmaceuticals worth $246K as of Q1 2026.
  • Regeneron Pharmaceuticals was a new XTX Topco position in Q1 2026.
  • Regeneron Pharmaceuticals made up ﹤0.01% of XTX Topco's portfolio in Q1 2026, its #2663 holding.
  • XTX Topco first reported a position in Regeneron Pharmaceuticals in Q1 2021 and has held it in 15 quarters since.
  • XTX Topco's Regeneron Pharmaceuticals position peaked at $8.04M in Q2 2025.
  • 1,392 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.