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Platform Technology Partners’s Biogen BIIB Stock Holding History

Platform Technology Partners’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 		$245K Sell
1,136
-65
-5% -$12.4K 0.04% 313
2026
Q1 		$220K Buy
+1,201
New +$221K 0.04% 299
2024
Q4 		– Sell
-1,403
Closed -$272K – 219
2024
Q3 		$272K Sell
1,403
-19
-1% -$3.98K 0.09% 186
2024
Q2 		$330K Buy
+1,422
New +$309K 0.11% 157
2023
Q4 		$315K Hold
1,289
– – 0.12% 154
2023
Q3 		$331K Hold
1,289
– – 0.16% 135
2023
Q2 		$361K Buy
1,289
+5
+0.4% +$1.49K 0.17% 130
2023
Q1 		$357K Sell
1,284
-17
-1% -$4.7K 0.18% 132
2022
Q4 		$360K Sell
1,301
-14
-1% -$3.95K 0.19% 125
2022
Q3 		$351K Hold
1,315
– – 0.2% 118
2022
Q2 		$268K Hold
1,315
– – 0.15% 147
2022
Q1 		$277K Sell
1,315
-12
-0.9% -$2.61K 0.13% 150
2021
Q4 		$318K Sell
1,327
-159
-11% -$40.9K 0.14% 159
2021
Q3 		$421K Hold
1,486
– – 0.19% 136
2021
Q2 		$515K Buy
+1,486
New +$450K 0.21% 125
2020
Q4 		$293K Sell
1,196
-19
-2% -$4.9K 0.14% 154
2020
Q3 		$345K Buy
1,215
+1
+0.1% +$279 0.21% 120
2020
Q2 		$325K Sell
1,214
-67
-5% -$20.1K 0.23% 122
2020
Q1 		$405K Sell
1,281
-121
-9% -$36.7K 0.37% 81
2019
Q4 		$416K Buy
+1,402
New +$389K 0.31% 100

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 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
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Platform Technology Partners's BIIB Position: Q2 2026 in Review

Platform Technology Partners reduced its Biogen (BIIB) stake by 5.4% in Q2 2026, selling an estimated $12.4K and leaving 1,136 shares worth $245K. The position accounts for 0.04% of the portfolio, ranked #313.

Platform Technology Partners first reported a position in BIIB in Q4 2019 and has held it in 20 quarters since. The position peaked at $515K in Q2 2021. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Platform Technology Partners held 1,136 shares of Biogen worth $245K as of Q2 2026.
  • Platform Technology Partners sold 65 Biogen shares in Q2 2026, an estimated $12.4K.
  • Biogen made up 0.04% of Platform Technology Partners's portfolio in Q2 2026, its #313 holding.
  • Platform Technology Partners first reported a position in Biogen in Q4 2019 and has held it in 20 quarters since.
  • Platform Technology Partners's Biogen position peaked at $515K in Q2 2021.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Platform Technology Partners's 13F filing for Q2 2026, filed 24 Jul 2026.