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Joel Isaacson & Co’s Biogen BIIB Stock Holding History

Joel Isaacson & Co’s Portfolio BIIB Stock Details BIIB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$349K Hold
1,614
– – 0.01% 362
2026
Q1 		$296K Buy
1,614
+50
+3% +$9.21K 0.01% 365
2025
Q4 		$275K Sell
1,564
-100
-6% -$16.3K 0.01% 377
2025
Q3 		$233K Buy
+1,664
New +$225K 0.01% 407
2023
Q3 		– Sell
-744
Closed -$212K – 308
2023
Q2 		$212K Sell
744
-124
-14% -$36.9K 0.01% 299
2023
Q1 		$241K Hold
868
– – 0.02% 282
2022
Q4 		$240K Hold
868
– – 0.02% 277
2022
Q3 		$232K Buy
+868
New +$184K 0.02% 268
2022
Q1 		– Sell
-878
Closed -$211K – 311
2021
Q4 		$211K Hold
878
– – 0.01% 292
2021
Q3 		$248K Hold
878
– – 0.02% 274
2021
Q2 		$304K Buy
878
+100
+13% +$30.3K 0.02% 233
2021
Q1 		$218K Buy
+778
New +$210K 0.02% 245
2020
Q4 		– Sell
-778
Closed -$221K – 242
2020
Q3 		$221K Hold
778
– – 0.03% 207
2020
Q2 		$208K Buy
778
+11
+1% +$3.31K 0.03% 197
2020
Q1 		$243K Buy
767
+10
+1% +$3.04K 0.04% 155
2019
Q4 		$225K Buy
+757
New +$210K 0.03% 194
2017
Q1 		– Sell
-33
Closed -$9K – 216
2016
Q4 		$9K Hold
33
– – ﹤0.01% 508
2016
Q3 		$10K Hold
33
– – ﹤0.01% 536
2016
Q2 		$8K Sell
33
-40
-55% -$10.5K ﹤0.01% 558
2016
Q1 		$19K Hold
73
– – ﹤0.01% 491
2015
Q4 		$22K Hold
73
– – 0.01% 448
2015
Q3 		$21K Sell
73
-34
-32% -$11.2K 0.01% 465
2015
Q2 		$43K Buy
107
+34
+47% +$13.6K 0.01% 379
2015
Q1 		$31K Buy
73
+40
+121% +$15.8K 0.01% 418
2014
Q4 		$11K Sell
33
-7
-18% -$2.27K ﹤0.01% 496
2014
Q3 		$13K Buy
+40
New +$13.2K ﹤0.01% 460

Other funds holding BIIB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
AIM
Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return

Joel Isaacson & Co's BIIB Position: Q2 2026 in Review

Joel Isaacson & Co held its Biogen (BIIB) position steady in Q2 2026 at 1,614 shares worth $349K. The position accounts for 0.01% of the portfolio, ranked #362.

Joel Isaacson & Co first reported a position in BIIB in Q3 2014 and has held it in 26 quarters since. 569 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Joel Isaacson & Co held 1,614 shares of Biogen worth $349K as of Q2 2026.
  • Joel Isaacson & Co left its Biogen share count unchanged in Q2 2026.
  • Biogen made up 0.01% of Joel Isaacson & Co's portfolio in Q2 2026, its #362 holding.
  • Joel Isaacson & Co first reported a position in Biogen in Q3 2014 and has held it in 26 quarters since.
  • 569 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Joel Isaacson & Co's 13F filing for Q2 2026, filed 4 Aug 2026.