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Procyon Advisors’s Biogen BIIB Stock Holding History

Procyon Advisors’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 		$433K Sell
2,005
-58
-3% -$11.1K 0.02% 386
2026
Q1 		$378K Buy
2,063
+666
+48% +$123K 0.02% 402
2025
Q4 		$246K Buy
+1,397
New +$228K 0.01% 487
2020
Q3 		– Sell
-13
Closed -$3K – 296
2020
Q2 		$3K Hold
13
– – ﹤0.01% 852
2020
Q1 		$4K Sell
13
-11
-46% -$3.34K ﹤0.01% 748
2019
Q4 		$7K Buy
+24
New +$6.66K ﹤0.01% 727

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

Procyon Advisors's BIIB Position: Q2 2026 in Review

Procyon Advisors reduced its Biogen (BIIB) stake by 2.8% in Q2 2026, selling an estimated $11.1K and leaving 2,005 shares worth $433K. The position accounts for 0.02% of the portfolio, ranked #386.

Procyon Advisors first reported a position in BIIB in Q4 2019 and has held it in 6 quarters since. 1,038 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Procyon Advisors held 2,005 shares of Biogen worth $433K as of Q2 2026.
  • Procyon Advisors sold 58 Biogen shares in Q2 2026, an estimated $11.1K.
  • Biogen made up 0.02% of Procyon Advisors's portfolio in Q2 2026, its #386 holding.
  • Procyon Advisors first reported a position in Biogen in Q4 2019 and has held it in 6 quarters since.
  • 1,038 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Procyon Advisors's 13F filing for Q2 2026, filed 9 Jul 2026.