F.L. Putnam Investment Management’s Regeneron Pharmaceuticals REGN Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$351K Buy
454
+44
+11% +$33.7K 0.01% 485
2025
Q4
$316K Sell
410
-413
-50% -$280K ﹤0.01% 506
2025
Q3
$463K Sell
823
-196
-19% -$111K 0.01% 426
2025
Q2
$535K Sell
1,019
-482
-32% -$269K 0.01% 400
2025
Q1
$952K Sell
1,501
-5,992
-80% -$4.12M 0.02% 323
2024
Q4
$5.34M Sell
7,493
-12,619
-63% -$10.6M 0.1% 152
2024
Q3
$21.1M Sell
20,112
-1,693
-8% -$1.88M 0.38% 56
2024
Q2
$22.9M Buy
21,805
+2,303
+12% +$2.23M 0.43% 49
2024
Q1
$18.8M Buy
19,502
+662
+4% +$629K 0.4% 57
2023
Q4
$16.5M Buy
18,840
+87
+0.5% +$71.6K 0.39% 59
2023
Q3
$15.4M Buy
18,753
+303
+2% +$238K 0.43% 52
2023
Q2
$13.3M Sell
18,450
-99
-0.5% -$76.3K 0.36% 60
2023
Q1
$15.2M Buy
18,549
+6
+0% +$4.53K 0.5% 46
2022
Q4
$13.4M Sell
18,543
-28
-0.2% -$20.7K 0.49% 53
2022
Q3
$12.8M Buy
18,571
+333
+2% +$210K 0.5% 45
2022
Q2
$10.8M Buy
18,238
+153
+0.8% +$99.5K 0.4% 61
2022
Q1
$12.6M Sell
18,085
-849
-4% -$537K 0.4% 56
2021
Q4
$12M Sell
18,934
-89
-0.5% -$54.7K 0.37% 60
2021
Q3
$11.5M Buy
19,023
+462
+2% +$287K 0.39% 62
2021
Q2
$10.4M Buy
18,561
+475
+3% +$241K 0.36% 67
2021
Q1
$8.56M Sell
18,086
-958
-5% -$466K 0.38% 62
2020
Q4
$9.2M Buy
19,044
+1,042
+6% +$562K 0.43% 58
2020
Q3
$10.1M Sell
18,002
-1,115
-6% -$676K 0.55% 49
2020
Q2
$11.9M Buy
19,117
+1,021
+6% +$580K 0.71% 42
2020
Q1
$8.84M Buy
18,096
+1,489
+9% +$614K 0.67% 49
2019
Q4
$6.24M Sell
16,607
-705
-4% -$237K 0.38% 76
2019
Q3
$4.8M Sell
17,312
-593
-3% -$175K 0.34% 84
2019
Q2
$5.6M Sell
17,905
-1,072
-6% -$357K 0.45% 65
2019
Q1
$7.79M Sell
18,977
-688
-3% -$283K 0.65% 52
2018
Q4
$7.34M Buy
19,665
+321
+2% +$117K 0.8% 40
2018
Q3
$7.82M Buy
19,344
+306
+2% +$116K 0.72% 47
2018
Q2
$6.57M Buy
19,038
+539
+3% +$169K 0.64% 54
2018
Q1
$6.37M Sell
18,499
-58
-0.3% -$20.2K 0.58% 54
2017
Q4
$6.98M Sell
18,557
-1,618
-8% -$655K 0.64% 54
2017
Q3
$9.02M Buy
+20,175
New +$9.6M 0.86% 38
2017
Q1
$6.66M Buy
17,196
+2,487
+17% +$922K 0.69% 47
2016
Q4
$5.4M Sell
14,709
-214
-1% -$81.4K 0.62% 55
2016
Q3
$6M Buy
14,923
+61
+0.4% +$24.5K 0.68% 48
2016
Q2
$5.19M Buy
+14,862
New +$5.72M 0.62% 52

Other funds holding REGN

F.L. Putnam Investment Management's REGN Position: Q1 2026 in Review

F.L. Putnam Investment Management increased its Regeneron Pharmaceuticals (REGN) stake by 11% in Q1 2026, buying an estimated $33.7K and bringing the position to 454 shares worth $351K. The position accounts for 0.01% of the portfolio, ranked #485.

F.L. Putnam Investment Management first reported a position in REGN in Q2 2016 and has held it in 39 quarters since. The position peaked at $22.9M in Q2 2024. 1,393 funds tracked by Wall St. Rank hold REGN as of Q1 2026.

  • F.L. Putnam Investment Management held 454 shares of Regeneron Pharmaceuticals worth $351K as of Q1 2026.
  • F.L. Putnam Investment Management bought 44 Regeneron Pharmaceuticals shares in Q1 2026, an estimated $33.7K.
  • Regeneron Pharmaceuticals made up 0.01% of F.L. Putnam Investment Management's portfolio in Q1 2026, its #485 holding.
  • F.L. Putnam Investment Management first reported a position in Regeneron Pharmaceuticals in Q2 2016 and has held it in 39 quarters since.
  • F.L. Putnam Investment Management's Regeneron Pharmaceuticals position peaked at $22.9M in Q2 2024.
  • 1,393 funds tracked by Wall St. Rank held Regeneron Pharmaceuticals as of Q1 2026.

Based on F.L. Putnam Investment Management's 13F filing for Q1 2026, filed 5 May 2026.