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Custom Index Systems’s Regeneron Pharmaceuticals REGN Stock Holding History

Custom Index Systems’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
2025
Q1 		– Sell
-286
Closed -$204K – 335
2024
Q4 		$204K Buy
286
+1
+0.4% +$839 0.11% 240
2024
Q3 		$300K Sell
285
-43
-13% -$47.9K 0.16% 192
2024
Q2 		$345K Buy
328
+88
+37% +$85.3K 0.2% 157
2024
Q1 		$231K Sell
240
-89
-27% -$84.6K 0.13% 222
2023
Q4 		$289K Buy
+329
New +$271K 0.18% 175

Other funds holding REGN

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Custom Index Systems's REGN Position: Q1 2025 in Review

Custom Index Systems sold out of Regeneron Pharmaceuticals (REGN) in Q1 2025, closing a stake of 286 shares — an estimated $204K sold.

Custom Index Systems first reported a position in REGN in Q4 2023 and held it in 5 quarters. The position peaked at $345K in Q2 2024. 1,290 funds tracked by Wall St. Rank hold REGN as of Q1 2025.

  • Custom Index Systems reported no remaining Regeneron Pharmaceuticals position as of Q1 2025 after selling out during the quarter.
  • Custom Index Systems sold 286 Regeneron Pharmaceuticals shares in Q1 2025, an estimated $204K.
  • Custom Index Systems first reported a position in Regeneron Pharmaceuticals in Q4 2023 and held it in 5 quarters.
  • Custom Index Systems's Regeneron Pharmaceuticals position peaked at $345K in Q2 2024.
  • 1,290 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q1 2025.

Based on Custom Index Systems's 13F filing for Q1 2025, filed 14 May 2025.