What if you'd invested in Biogen Inc.?
By Alex · Tickerpine · figures from public market data
$1,000 invested in BIIB back in 1991 would be worth
$69,130
+6,813% total · 13.0% per year
Here's the plain version: if you'd put $1,000 into Biogen Inc. back in 1991-09 and just left it alone, you'd have about $69,130 today. That's a gain of 6,813%, or roughly 13.0% a year (dividends reinvested). No hype — just what the prices did.
Growth of $1,000 in BIIB
since 1991-09, dividends reinvested · hover for detail
$1,000 in BIIB over time
| If you invested | $1,000 would be | Profit | Total return | Per year |
|---|---|---|---|---|
| 1 year ago (2025-06) | $1,720 | +$720 | +72% | 72.1% |
| 3 years ago (2023-06) | $758 | $-242 | -24% | -8.8% |
| 5 years ago (2021-06) | $624 | $-376 | -38% | -9.0% |
| 10 years ago (2016-06) | $893 | $-107 | -11% | -1.1% |
| At the very start (1991-09) | $69,130 | +$68,130 | +6,813% | 13.0% |
Try your own numbers
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P/E, ROE, margins and what they mean — in plain English.
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Past performance doesn't predict future results. Dividends assumed reinvested via adjusted prices. Informational only — not investment advice.