AustralianSuper’s Biogen BIIB Stock Holding History

AustralianSuper’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	$145M	Buy	672,723 +56,530	+9%	+$10.8M	0.63%	40
2026 Q1	$113M	Buy	616,193 +139,381	+29%	+$25.7M	0.59%	44
2025 Q4	$83.9M	Sell	476,812 -274,574	-37%	-$44.9M	0.39%	56
2025 Q3	$105M	Buy	751,386 +11,970	+2%	+$1.62M	0.5%	44
2025 Q2	$92.9M	Buy	739,416 +341,719	+86%	+$42.6M	0.47%	55
2025 Q1	$54.4M	Buy	+397,697	New	+$56.9M	0.31%	87
2023 Q3	–	Sell	-1,819	Closed	-$518K	–	238
2023 Q2	$518K	Buy	+1,819	New	+$541K	﹤0.01%	247
2022 Q1	–	Sell	-191,861	Closed	-$46.4M	–	189
2021 Q4	$46.4M	Sell	191,861 -63,136	-25%	-$16.2M	0.24%	69
2021 Q3	$72.2M	Sell	254,997 -17,516	-6%	-$5.74M	0.46%	46
2021 Q2	$94.4M	Sell	272,513 -235,266	-46%	-$71.3M	0.66%	39
2021 Q1	$142M	Buy	507,779 +368,303	+264%	+$99.3M	1.11%	33
2020 Q4	$34.2M	Buy	+139,476	New	+$36M	0.26%	62

Other funds holding BIIB

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

AustralianSuper's BIIB Position: Q2 2026 in Review

AustralianSuper increased its Biogen (BIIB) stake by 9.2% in Q2 2026, buying an estimated $10.8M and bringing the position to 672,723 shares worth $145M. The position accounts for 0.63% of the portfolio, ranked #40.

AustralianSuper first reported a position in BIIB in Q4 2020 and has held it in 12 quarters since. 1,042 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

AustralianSuper held 672,723 shares of Biogen worth $145M as of Q2 2026.
AustralianSuper bought 56,530 Biogen shares in Q2 2026, an estimated $10.8M.
Biogen made up 0.63% of AustralianSuper's portfolio in Q2 2026, its #40 holding.
AustralianSuper first reported a position in Biogen in Q4 2020 and has held it in 12 quarters since.
1,042 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on AustralianSuper's 13F filing for Q2 2026, filed 12 Aug 2026.