Filing Details
Pacer Advisors, Inc., a registered investment adviser, reduced its position in Biogen Inc. (NASDAQ:BIIB) during Q1 2026, according to its most recent 13F filing with the Securities and Exchange Commission.
The firm sold 485,482 shares of the Healthcare company, reducing its total holdings to 660,408 shares valued at approximately $121.1M as of the filing date. This represents a 42.4% decrease in the position.
Market Context
Biogen Inc.'s stock currently trades at $204.67 with a market capitalization of $25.3B.
Institutional selling doesn't always signal a bearish outlook. Large funds regularly trim positions for portfolio rebalancing, client redemptions, or to lock in gains. That said, when a major holder like Pacer Advisors, Inc. reduces exposure to Biogen Inc., it's worth monitoring whether other institutions are making similar moves.
Healthcare stocks have attracted institutional attention as an aging population drives long-term demand. Biogen Inc. operates in a sector where regulatory developments and pipeline progress can significantly impact institutional positioning.
The size of this position — $121.1 million — places it among the more significant institutional holdings in Biogen Inc.. Large positions like this can influence trading dynamics and are closely watched by market participants tracking smart money flows.
Investors should note that 13F filings reflect holdings as of the end of the reporting quarter and are filed up to 45 days later. The position may have changed since the filing date. 13F data is most useful when analyzed alongside other signals such as insider transactions, analyst ratings, and fundamental trends.
Related Tools: Insider Trades Tracker | View BIIB Stock Page
Frequently Asked Questions
What is a 13F filing?
A 13F filing is a quarterly SEC report required for institutional managers with over $100 million in assets. It discloses equity holdings, providing transparency into how firms like Pacer Advisors, Inc. position their portfolios.
How can I track institutional ownership of BIIB?
View all institutional holders on our BIIB institutional ownership page.