Parallax Volatility Advisers
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Parallax Volatility Advisers’s Regeneron Pharmaceuticals REGN Stock Holding History

Parallax Volatility Advisers’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 		– Sell
-321
Closed -$248K – 1778
2025
Q4 		$248K Buy
+321
New +$218K ﹤0.01% 1347
2025
Q2 		– Sell
-9,197
Closed -$5.83M – 1770
2025
Q1 		$5.83M Buy
+9,197
New +$6.33M 0.02% 582
2024
Q4 		– Sell
-12,144
Closed -$10.2M – 2268
2024
Q3 		$12.8M Buy
12,144
+1,148
+10% +$1.28M 0.02% 459
2024
Q2 		$11.6M Sell
10,996
-2,004
-15% -$1.94M 0.02% 434
2024
Q1 		$12.5M Buy
+13,000
New +$12.4M 0.03% 445
2023
Q2 		– Sell
-60
Closed -$46.3K – 2779
2023
Q1 		$49.3K Hold
60
– – ﹤0.01% 2218
2022
Q4 		$43.3K Hold
60
– – ﹤0.01% 2388
2022
Q3 		$41K Sell
60
-3,141
-98% -$1.98M ﹤0.01% 2638
2022
Q2 		$1.89M Buy
+3,201
New +$2.08M ﹤0.01% 1372
2022
Q1 		– Sell
-5,481
Closed -$3.46M – 3300
2021
Q4 		$3.46M Sell
5,481
-417
-7% -$256K ﹤0.01% 1366
2021
Q3 		$3.57M Buy
+5,898
New +$3.66M ﹤0.01% 1399
2021
Q1 		– Sell
-346
Closed -$167K – 3577
2020
Q4 		$167K Buy
346
+183
+112% +$98.8K ﹤0.01% 2829
2020
Q3 		$91K Buy
+163
New +$98.8K ﹤0.01% 2741
2020
Q2 		– Sell
-5
Closed -$2K – 2843
2020
Q1 		$2K Sell
5
-8,934
-100% -$3.69M ﹤0.01% 2401
2019
Q4 		$3.36M Buy
8,939
+8,588
+2,447% +$2.89M ﹤0.01% 1070
2019
Q3 		$97K Sell
351
-236
-40% -$69.8K ﹤0.01% 1986
2019
Q2 		$184K Sell
587
-2,435
-81% -$811K ﹤0.01% 1746
2019
Q1 		$1.24M Sell
3,022
-45,279
-94% -$18.6M ﹤0.01% 1179
2018
Q4 		$18M Buy
+48,301
New +$17.7M 0.02% 364
2018
Q3 		– Sell
-20,645
Closed -$7.86M – 3389
2018
Q2 		$7.12M Buy
20,645
+12,793
+163% +$4M 0.01% 525
2018
Q1 		$2.7M Buy
7,852
+4,553
+138% +$1.58M ﹤0.01% 691
2017
Q4 		$1.24M Sell
3,299
-222
-6% -$89.9K ﹤0.01% 1108
2017
Q3 		$1.57M Buy
3,521
+2,015
+134% +$959K ﹤0.01% 916
2017
Q2 		$740K Sell
1,506
-10,077
-87% -$4.41M ﹤0.01% 1120
2017
Q1 		$4.49M Buy
11,583
+10,723
+1,247% +$3.97M 0.01% 610
2016
Q4 		$316K Sell
860
-1,141
-57% -$434K ﹤0.01% 1697
2016
Q3 		$804K Sell
2,001
-3,748
-65% -$1.5M ﹤0.01% 1334
2016
Q2 		$2.01M Sell
5,749
-218
-4% -$84K ﹤0.01% 928
2016
Q1 		$2.15M Buy
5,967
+4,557
+323% +$1.88M ﹤0.01% 883
2015
Q4 		$765K Sell
1,410
-379
-21% -$205K ﹤0.01% 1375
2015
Q3 		$832K Buy
1,789
+153
+9% +$82.2K ﹤0.01% 1352
2015
Q2 		$835K Sell
1,636
-1,523
-48% -$743K ﹤0.01% 1412
2015
Q1 		$1.43M Buy
3,159
+2,175
+221% +$922K ﹤0.01% 1150
2014
Q4 		$404K Buy
984
+968
+6,050% +$381K ﹤0.01% 2222
2014
Q3 		$6K Sell
16
-21
-57% -$7.04K ﹤0.01% 3966
2014
Q2 		$10K Sell
37
-25,055
-100% -$7.43M ﹤0.01% 3749
2014
Q1 		$7.54M Buy
+25,092
New +$7.73M 0.04% 300

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
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
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
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Parallax Volatility Advisers's REGN Position: Q1 2026 in Review

Parallax Volatility Advisers sold out of Regeneron Pharmaceuticals (REGN) in Q1 2026, closing a stake of 321 shares — an estimated $248K sold.

Parallax Volatility Advisers first reported a position in REGN in Q1 2014 and held it in 37 quarters. The position peaked at $18M in Q4 2018. 1,400 funds tracked by Wall St. Rank hold REGN as of Q1 2026.

  • Parallax Volatility Advisers reported no remaining Regeneron Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Parallax Volatility Advisers sold 321 Regeneron Pharmaceuticals shares in Q1 2026, an estimated $248K.
  • Parallax Volatility Advisers first reported a position in Regeneron Pharmaceuticals in Q1 2014 and held it in 37 quarters.
  • Parallax Volatility Advisers's Regeneron Pharmaceuticals position peaked at $18M in Q4 2018.
  • 1,400 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.