Two Sigma Investments
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Two Sigma Investments’s Regeneron Pharmaceuticals REGN Stock Holding History

Two Sigma Investments’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
2022
Q1 		– Sell
-15,400
Closed -$9.72M – 4030
2021
Q4 		$9.72M Buy
15,400
+7,400
+93% +$4.55M 0.02% 796
2021
Q3 		$4.84M Sell
8,000
-9,300
-54% -$5.77M 0.01% 1256
2021
Q2 		$9.66M Sell
17,300
-1,100
-6% -$557K 0.02% 821
2021
Q1 		$8.71M Sell
18,400
-1,800
-9% -$876K 0.02% 763
2020
Q4 		$9.76M Buy
20,200
+13,600
+206% +$7.34M 0.03% 597
2020
Q3 		$3.69M Buy
6,600
+5,500
+500% +$3.33M 0.01% 948
2020
Q2 		$686K Sell
1,100
-6,500
-86% -$3.69M ﹤0.01% 1777
2020
Q1 		$3.71M Sell
7,600
-11,000
-59% -$4.54M 0.03% 643
2019
Q4 		$6.98M Buy
18,600
+4,400
+31% +$1.48M 0.02% 775
2019
Q3 		$3.94M Buy
14,200
+4,100
+41% +$1.21M 0.01% 986
2019
Q2 		$3.16M Buy
10,100
+1,100
+12% +$366K 0.01% 1149
2019
Q1 		$3.7M Buy
+9,000
New +$3.71M 0.01% 1110
2018
Q4 		– Sell
-1,000
Closed -$404K – 3428
2018
Q3 		$404K Sell
1,000
-14,100
-93% -$5.37M ﹤0.01% 2594
2018
Q2 		$5.21M Sell
15,100
-8,900
-37% -$2.78M 0.02% 992
2018
Q1 		$8.27M Buy
24,000
+15,000
+167% +$5.22M 0.03% 680
2017
Q4 		$3.38M Buy
9,000
+600
+7% +$243K 0.01% 1115
2017
Q3 		$3.76M Buy
+8,400
New +$4M 0.01% 944
2017
Q2 		– Sell
-4,000
Closed -$1.55M – 3223
2017
Q1 		$1.55M Buy
4,000
+3,000
+300% +$1.11M 0.01% 1609
2016
Q4 		$367K Sell
1,000
-11,000
-92% -$4.18M ﹤0.01% 2664
2016
Q3 		$4.82M Buy
12,000
+10,000
+500% +$4.01M 0.02% 896
2016
Q2 		$698K Buy
+2,000
New +$770K ﹤0.01% 2010
2016
Q1 		– Sell
-2,000
Closed -$1.09M – 3073
2015
Q4 		$1.09M Sell
2,000
-1,000
-33% -$542K 0.01% 1444
2015
Q3 		$1.4M Buy
+3,000
New +$1.61M 0.01% 1011

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

Two Sigma Investments's REGN Position: Q1 2026 in Review

Two Sigma Investments increased its Regeneron Pharmaceuticals (REGN) stake by 189% in Q1 2026, buying an estimated $407M and bringing the position to 812,236 shares worth $628M. The position accounts for 0.51% of the portfolio, ranked #24.

Two Sigma Investments first reported a position in REGN in Q2 2013 and has held it in 36 quarters since. 1,392 funds tracked by Wall St. Rank hold REGN as of Q1 2026.

  • Two Sigma Investments held 812,236 shares of Regeneron Pharmaceuticals worth $628M as of Q1 2026.
  • Two Sigma Investments bought 531,085 Regeneron Pharmaceuticals shares in Q1 2026, an estimated $407M.
  • Regeneron Pharmaceuticals made up 0.51% of Two Sigma Investments's portfolio in Q1 2026, its #24 holding.
  • Two Sigma Investments first reported a position in Regeneron Pharmaceuticals in Q2 2013 and has held it in 36 quarters since.
  • 1,392 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.