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Sivia Capital Partners’s Biogen BIIB Stock Holding History

Sivia Capital 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 		$838K Buy
3,879
+876
+29% +$168K 0.1% 238
2026
Q1 		$551K Buy
3,003
+688
+30% +$127K 0.11% 239
2025
Q4 		$407K Buy
2,315
+17
+0.7% +$2.78K 0.08% 321
2025
Q3 		$322K Buy
2,298
+581
+34% +$78.5K 0.09% 298
2025
Q2 		$216K Buy
+1,717
New +$214K 0.07% 386

Other funds holding BIIB

Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
AIM
Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
AAMU
AEGON Asset Management (UK) Edinburgh, United Kingdom $9.38B AUM 48.94% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return
ADEF
Adams Diversified Equity Fund Baltimore, Maryland $3.27B AUM 45.57% 1-Year Est. Return
Handelsbanken Fonder
Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return
Mirae Asset Global Investments
Mirae Asset Global Investments Seoul, South Korea $67.7B AUM 51.91% 1-Year Est. Return
GIA
Gateway Investment Advisers Cincinnati, Ohio $10.1B AUM 40.26% 1-Year Est. Return
NGM
North Growth Management Vancouver, British Columbia, Canada $780M AUM 102.77% 1-Year Est. Return

Sivia Capital Partners's BIIB Position: Q2 2026 in Review

Sivia Capital Partners increased its Biogen (BIIB) stake by 29% in Q2 2026, buying an estimated $168K and bringing the position to 3,879 shares worth $838K. The position accounts for 0.1% of the portfolio, ranked #238.

Sivia Capital Partners first reported a position in BIIB in Q2 2025 and has held it in 5 quarters since. 241 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Sivia Capital Partners held 3,879 shares of Biogen worth $838K as of Q2 2026.
  • Sivia Capital Partners bought 876 Biogen shares in Q2 2026, an estimated $168K.
  • Biogen made up 0.1% of Sivia Capital Partners's portfolio in Q2 2026, its #238 holding.
  • Sivia Capital Partners first reported a position in Biogen in Q2 2025 and has held it in 5 quarters since.
  • 241 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Sivia Capital Partners's 13F filing for Q2 2026, filed 23 Jul 2026.