Sigma Planning Corp
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Sigma Planning Corp’s Biogen BIIB Stock Holding History

Sigma Planning Corp’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
Q3 		$1.17M Sell
5,193
-1,000
-16% -$212K 0.03% 525
2026
Q2 		$1.34M Sell
6,193
-1,008
-14% -$193K 0.03% 487
2026
Q1 		$1.32M Buy
7,201
+1,955
+37% +$360K 0.04% 465
2025
Q4 		$923K Buy
+5,246
New +$857K 0.03% 560
2023
Q1 		– Sell
-948
Closed -$263K – 1301
2022
Q4 		$263K Sell
948
-735
-44% -$208K 0.01% 1021
2022
Q3 		$449K Sell
1,683
-32
-2% -$6.8K 0.02% 775
2022
Q2 		$350K Sell
1,715
-78
-4% -$15.9K 0.01% 916
2022
Q1 		$378K Buy
+1,793
New +$390K 0.01% 963
2021
Q3 		– Sell
-2,365
Closed -$819K – 1391
2021
Q2 		$819K Sell
2,365
-903
-28% -$274K 0.02% 629
2021
Q1 		$914K Buy
3,268
+259
+9% +$69.8K 0.03% 536
2020
Q4 		$737K Buy
3,009
+1,862
+162% +$480K 0.03% 543
2020
Q3 		$325K Sell
1,147
-235
-17% -$65.5K 0.01% 766
2020
Q2 		$370K Sell
1,382
-197
-12% -$59.2K 0.02% 702
2020
Q1 		$500K Buy
1,579
+388
+33% +$118K 0.03% 483
2019
Q4 		$353K Buy
+1,191
New +$330K 0.01% 721
2019
Q3 		– Sell
-969
Closed -$227K – 1011
2019
Q2 		$227K Buy
+969
New +$224K 0.01% 855
2018
Q4 		– Sell
-810
Closed -$286K – 861
2018
Q3 		$286K Buy
810
+4
+0.5% +$1.38K 0.02% 716
2018
Q2 		$234K Buy
+806
New +$227K 0.02% 756
2018
Q1 		– Sell
-994
Closed -$317K – 862
2017
Q4 		$317K Buy
994
+234
+31% +$75.1K 0.02% 581
2017
Q3 		$238K Buy
+760
New +$225K 0.02% 701

Other funds holding BIIB

Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return
Artemis Investment Management
Artemis Investment Management Edinburgh, United Kingdom $11.5B AUM 61.77% 1-Year Est. Return
KBC Group
KBC Group Brussels, Belgium $47.9B AUM 37.61% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return
Beau Ventures, LLc
Beau Ventures, LLc Pittsford, New York $1.06B AUM 83.06% 1-Year Est. Return
Adams Diversified Equity Fund
Adams Diversified Equity Fund Baltimore, Maryland $3.3B AUM 38.12% 1-Year Est. Return
Banque Pictet & Cie
Banque Pictet & Cie Geneva 73, Switzerland $14.5B AUM 33.71% 1-Year Est. Return
Gateway Investment Advisers
Gateway Investment Advisers Cincinnati, Ohio $11B AUM 34.31% 1-Year Est. Return
North Growth Management
North Growth Management Vancouver, British Columbia, Canada $743M AUM 74.29% 1-Year Est. Return
Fideuram - Intesa Sanpaolo Private Banking
Fideuram - Intesa Sanpaolo Private Banking Turin $3.5B AUM 45.13% 1-Year Est. Return

Sigma Planning Corp's BIIB Position: Q3 2026 in Review

Sigma Planning Corp reduced its Biogen (BIIB) stake by 16% in Q3 2026, selling an estimated $212K and leaving 5,193 shares worth $1.17M. The position accounts for 0.03% of the portfolio, ranked #525.

Sigma Planning Corp first reported a position in BIIB in Q3 2017 and has held it in 20 quarters since. The position peaked at $1.34M in Q2 2026. 257 funds tracked by Wall St. Rank hold BIIB as of Q3 2026.

  • Sigma Planning Corp held 5,193 shares of Biogen worth $1.17M as of Q3 2026.
  • Sigma Planning Corp sold 1,000 Biogen shares in Q3 2026, an estimated $212K.
  • Biogen made up 0.03% of Sigma Planning Corp's portfolio in Q3 2026, its #525 holding.
  • Sigma Planning Corp first reported a position in Biogen in Q3 2017 and has held it in 20 quarters since.
  • Sigma Planning Corp's Biogen position peaked at $1.34M in Q2 2026.
  • 257 funds tracked by Wall St. Rank held Biogen as of Q3 2026.

Based on Sigma Planning Corp's 13F filing for Q3 2026, filed 23 Oct 2026.