LJAC
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L.J. Altfest & Co’s Regeneron Pharmaceuticals REGN Stock Holding History

L.J. Altfest & Co’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 		$1.49M Sell
1,930
-982
-34% -$752K 0.16% 109
2025
Q4 		$2.25M Buy
2,912
+1,275
+78% +$866K 0.25% 75
2025
Q3 		$921K Buy
1,637
+595
+57% +$336K 0.1% 135
2025
Q2 		$547K Buy
+1,042
New +$582K 0.06% 202
2024
Q4 		– Sell
-1,019
Closed -$1.07M – 360
2024
Q3 		$1.07M Buy
1,019
+21
+2% +$23.4K 0.14% 122
2024
Q2 		$1.05M Buy
998
+15
+2% +$14.5K 0.14% 111
2024
Q1 		$946K Buy
983
+18
+2% +$17.1K 0.13% 123
2023
Q4 		$848K Sell
965
-3
-0.3% -$2.47K 0.12% 127
2023
Q3 		$797K Buy
968
+7
+0.7% +$5.5K 0.13% 130
2023
Q2 		$691K Sell
961
-9
-0.9% -$6.94K 0.1% 138
2023
Q1 		$797K Hold
970
– – 0.12% 115
2022
Q4 		$700K Sell
970
-12
-1% -$8.85K 0.12% 120
2022
Q3 		$676K Buy
982
+19
+2% +$12K 0.13% 111
2022
Q2 		$569K Hold
963
– – 0.1% 135
2022
Q1 		$673K Buy
963
+36
+4% +$22.8K 0.12% 127
2021
Q4 		$585K Buy
927
+3
+0.3% +$1.84K 0.11% 135
2021
Q3 		$559K Sell
924
-7
-0.8% -$4.35K 0.12% 129
2021
Q2 		$520K Sell
931
-14
-1% -$7.09K 0.11% 137
2021
Q1 		$447K Buy
+945
New +$460K 0.11% 156
2020
Q1 		– Sell
-1,294
Closed -$486K – 225
2019
Q4 		$486K Sell
1,294
-454
-26% -$153K 0.12% 110
2019
Q3 		$485K Buy
1,748
+29
+2% +$8.58K 0.13% 104
2019
Q2 		$538K Buy
+1,719
New +$572K 0.14% 100

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

L.J. Altfest & Co's REGN Position: Q1 2026 in Review

L.J. Altfest & Co reduced its Regeneron Pharmaceuticals (REGN) stake by 34% in Q1 2026, selling an estimated $752K and leaving 1,930 shares worth $1.49M. The position accounts for 0.16% of the portfolio, ranked #109.

L.J. Altfest & Co first reported a position in REGN in Q2 2019 and has held it in 22 quarters since. The position peaked at $2.25M in Q4 2025. 1,392 funds tracked by Wall St. Rank hold REGN as of Q1 2026.

  • L.J. Altfest & Co held 1,930 shares of Regeneron Pharmaceuticals worth $1.49M as of Q1 2026.
  • L.J. Altfest & Co sold 982 Regeneron Pharmaceuticals shares in Q1 2026, an estimated $752K.
  • Regeneron Pharmaceuticals made up 0.16% of L.J. Altfest & Co's portfolio in Q1 2026, its #109 holding.
  • L.J. Altfest & Co first reported a position in Regeneron Pharmaceuticals in Q2 2019 and has held it in 22 quarters since.
  • L.J. Altfest & Co's Regeneron Pharmaceuticals position peaked at $2.25M in Q4 2025.
  • 1,392 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q1 2026.

Based on L.J. Altfest & Co's 13F filing for Q1 2026, filed 28 Apr 2026.