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Principal Securities’s Biogen BIIB Stock Holding History

Principal Securities’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 		$359K Buy
1,661
+241
+17% +$46.1K ﹤0.01% 1249
2026
Q1 		$260K Buy
+1,420
New +$262K ﹤0.01% 1271
2025
Q4 		– Sell
-711
Closed -$99.6K – 1580
2025
Q3 		$99.6K Buy
711
+7
+1% +$946 ﹤0.01% 1597
2025
Q2 		$88.4K Buy
704
+367
+109% +$45.7K ﹤0.01% 1597
2025
Q1 		$51.5K Hold
337
– – ﹤0.01% 1751
2024
Q4 		$51.5K Buy
337
+78
+30% +$13.2K ﹤0.01% 1750
2024
Q3 		$50.2K Sell
259
-11
-4% -$2.3K ﹤0.01% 1691
2024
Q2 		$62.6K Sell
270
-8
-3% -$1.74K ﹤0.01% 1517
2024
Q1 		$59.9K Sell
278
-173
-38% -$40.5K ﹤0.01% 1489
2023
Q4 		$117K Buy
+451
New +$111K ﹤0.01% 1140

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

Principal Securities's BIIB Position: Q2 2026 in Review

Principal Securities increased its Biogen (BIIB) stake by 17% in Q2 2026, buying an estimated $46.1K and bringing the position to 1,661 shares worth $359K. The position accounts for ﹤0.01% of the portfolio, ranked #1249.

Principal Securities first reported a position in BIIB in Q4 2023 and has held it in 10 quarters since. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Principal Securities held 1,661 shares of Biogen worth $359K as of Q2 2026.
  • Principal Securities bought 241 Biogen shares in Q2 2026, an estimated $46.1K.
  • Biogen made up ﹤0.01% of Principal Securities's portfolio in Q2 2026, its #1249 holding.
  • Principal Securities first reported a position in Biogen in Q4 2023 and has held it in 10 quarters since.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Principal Securities's 13F filing for Q2 2026, filed 4 Aug 2026.