What is Biogen's gross unrealized gains?

Biogen (BIIB) reported gross unrealized gains of $0.00 in Q1 2026.

What is the long-term trend for Biogen's gross unrealized gains?

Over 5 years (2020 to 2025), Biogen's gross unrealized gains has grown at a -100.0% compound annual growth rate (CAGR), from $749.70M to $0.00.

Over 5 years (FY 2020 to FY 2025), Gross Unrealized Gains shows a downward trend with a -100.0% CAGR.

StatementBalance Sheet Statement

SectionOther

First reportedQ4 2020

Last reportedQ1 2026

Metric ID: other_equity_securities_available_for_sale_accumulated_g_450d15

19 periods

	Q3 '21	Q4 '21	Q1 '22	Q2 '22	Q3 '22	Q4 '22	Q1 '23	Q2 '23	Q3 '23	Q4 '23	Q1 '24	Q2 '24	Q3 '24	Q4 '24	Q1 '25	Q2 '25	Q3 '25	Q4 '25	Q1 '26
Value	$257.90M	$160.90M	$4.50M	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
QoQ Change	—	-37.6%	-97.2%	-100.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
YoY Change	—	—	—	—	-100.0%	-100.0%	-100.0%	—	—	—	—	—	—	—	—	—	—	—	—

Range$0.00 – $257.90M

CAGR-100.0%

Avg YoY Growth-100.0%

Median YoY Growth-100.0%

What is Biogen's gross unrealized gains?: Biogen (BIIB) reported gross unrealized gains of $0.00 in Q1 2026.
What is the long-term trend for Biogen's gross unrealized gains?: Over 5 years (2020 to 2025), Biogen's gross unrealized gains has grown at a -100.0% compound annual growth rate (CAGR), from $749.70M to $0.00.