Pathstone Holdings
BIIB icon

Pathstone Holdings’s Biogen BIIB Stock Holding History

Pathstone Holdings’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 		$3.36M Buy
15,469
+561
+4% +$107K 0.01% 836
2026
Q1 		$2.73M Buy
14,908
+1,100
+8% +$203K 0.01% 874
2025
Q4 		$2.43M Buy
13,808
+824
+6% +$135K 0.01% 922
2025
Q3 		$1.82M Buy
12,984
+1,387
+12% +$187K 0.01% 1087
2025
Q2 		$1.46M Sell
11,597
-116
-1% -$14.5K 0.01% 1183
2025
Q1 		$1.6M Buy
11,713
+1,010
+9% +$144K 0.01% 1110
2024
Q4 		$1.64M Sell
10,703
-321
-3% -$54.1K 0.01% 1087
2024
Q3 		$2.14M Sell
11,024
-2,426
-18% -$508K 0.01% 932
2024
Q2 		$3.12M Buy
13,450
+1,760
+15% +$382K 0.01% 715
2024
Q1 		$2.52M Buy
11,690
+1,281
+12% +$300K 0.01% 806
2023
Q4 		$2.69M Buy
+10,409
New +$2.56M 0.01% 632

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

Pathstone Holdings's BIIB Position: Q2 2026 in Review

Pathstone Holdings increased its Biogen (BIIB) stake by 3.8% in Q2 2026, buying an estimated $107K and bringing the position to 15,469 shares worth $3.36M. The position accounts for 0.01% of the portfolio, ranked #836.

Pathstone Holdings first reported a position in BIIB in Q4 2023 and has held it in 11 quarters since. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Pathstone Holdings held 15,469 shares of Biogen worth $3.36M as of Q2 2026.
  • Pathstone Holdings bought 561 Biogen shares in Q2 2026, an estimated $107K.
  • Biogen made up 0.01% of Pathstone Holdings's portfolio in Q2 2026, its #836 holding.
  • Pathstone Holdings first reported a position in Biogen in Q4 2023 and has held it in 11 quarters since.
  • 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Pathstone Holdings's 13F filing for Q2 2026, filed 13 Aug 2026.