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Biogen Inc. (BIIB) Total Return Calculator with Dividends Reinvested

Biogen Inc.

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The total return for Biogen Inc. (BIIB) stock is +55.28% over the past 12 months. So far it's up 6.36% this year. The 5-year total return is -30.36%, meaning $10,000 invested in BIIB stock 5 years ago would be worth $6,964 today. Total return includes price appreciation plus reinvesting any dividends paid out.

If you invested $10,000 in BIIB 1 year ago, it would be worth $16,323 today — you'd have gained $6,323.

With Dividends Reinvested$16,323+63.23%

Price Only (No DRIP)$16,323+63.23%

Period2025-05-06 → 2026-05-06

Price

Total Return (DRIP)

S&P 500

If You Invested $10,000 in BIIB

1Y$15,528+$5,528 (+55.3%)55.3% CAGR

3Y$5,946-$4,054 (-40.5%)-15.9% CAGR

5Y$6,964-$3,036 (-30.4%)-7.0% CAGR

10Y$7,147-$2,853 (-28.5%)-3.3% CAGR

15Y$19,810+$9,810 (+98.1%)4.7% CAGR

20Y$40,309+$30,309 (+303.1%)7.2% CAGR

30Y$412,645+$402,645 (+4026.5%)13.2% CAGR

Biogen Inc. did not pay dividends during this period. Total return = price return.

Loading BIIB total return...

As of 2026-05-06

Returns at a Glance

Period	Total Return	CAGR	Price Only	Div. Contrib.	$10K →
YTD	+6.36%	—	+6.36%	—	$10,636
1Y	+55.28%	55.28%	+55.28%	—	$15,528
3Y	-40.54%	-15.91%	-40.54%	—	$5,946
5Y	-30.36%	-6.98%	-30.36%	—	$6,964
10Y	-28.53%	-3.30%	-28.53%	—	$7,147
15Y	+98.10%	4.66%	+98.10%	—	$19,810
20Y	+303.09%	7.22%	+303.09%	—	$40,309
30Y	+4026.45%	13.20%	+4026.45%	—	$412,645

Risk & Highlights

Best Year+420.00%1995

Worst Year-51.33%2002

Max Drawdown-14.34%2026-02-06 → 2026-04-06

Annual Returns

Year	Total Return	Price Return	Div.	S&P 500	vs S&P
2026YTD	+7.87%	+7.87%	—	+0.41%	+7.5pp
2025	+17.33%	+17.33%	—	+16.64%	+0.7pp
2024	-42.88%	-42.88%	—	+24.00%	-66.9pp
2023	-5.08%	-5.08%	—	+24.81%	-29.9pp
2022	+13.43%	+13.43%	—	-19.95%	+33.4pp

BIIB outperformed the S&P 500 by 26.84pp over the past year (+55.28% vs +28.44%).

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BIIB Peers' Total Return

Accurate peer set · 10 comparable names

Name	Mkt Cap	30D Rtn	YTD Total Rtn	1Y Total Rtn	Div Contrib	3Y Total Rtn	5Y Total Rtn	10Y Total Rtn
BIIBBiogen Inc.	$27.9B	+9.7%	+6.4%	+55.3%	—	-40.5%	-30.4%	-28.5%
REGNRegeneron Pharmaceuticals, Inc.	$73.0B	-8.0%	-9.4%	+17.0%	+0.6pp	-7.3%	+46.5%	+87.1%
VRTXVertex Pharmaceuticals Incorporated	$107.9B	-2.3%	-6.1%	-15.2%	—	+21.9%	+98.4%	+405.2%
BMRNBioMarin Pharmaceutical Inc.	$10.2B	-5.3%	-10.4%	-14.2%	—	-44.9%	-31.5%	-34.1%
ALNYAlnylam Pharmaceuticals, Inc.	$40.2B	-8.8%	-24.8%	+10.1%	—	+42.0%	+127.0%	+412.7%
GILDGilead Sciences, Inc.	$166.3B	-4.7%	+10.4%	+32.9%	+3.1pp	+79.0%	+123.4%	+86.7%
AMGNAmgen Inc.	$177.9B	-3.8%	+1.4%	+21.1%	+3.4pp	+50.9%	+49.3%	+158.7%
INCYIncyte Corporation	$19.5B	+2.8%	-3.9%	+56.9%	—	+46.4%	+19.9%	+38.4%
IONSIonis Pharmaceuticals, Inc.	$12.4B	+1.2%	-5.5%	+123.6%	—	+107.9%	+88.6%	+115.6%
ACADACADIA Pharmaceuticals Inc.	$3.8B	+0.1%	-14.5%	+47.6%	—	+1.9%	+15.2%	-17.4%
LLYEli Lilly and Company	$933.7B	+6.6%	-8.4%	+21.1%	+0.8pp	+134.8%	+424.9%	+1260.9%

Compare:BIIB vs REGN BIIB vs VRTX BIIB vs BMRN BIIB vs REGN vs VRTX

About BIIB Dividend Returns

Biogen Inc. (BIIB) does not currently pay dividends. Many growth-focused companies reinvest profits back into the business rather than distributing them as dividends.

How We Calculate Total Return

Our total return calculator simulates dividend reinvestment (DRIP) by assuming each dividend payment is used to purchase additional shares at the closing price on the ex-dividend date. This methodology provides an accurate representation of how a dividend reinvestment plan would perform.

Frequently Asked Questions

Q1What is the total return of BIIB over the past year?

Biogen Inc. (BIIB) delivered a return of 55.28% over the past year. Since BIIB does not currently pay dividends, the total return equals the price-only return.

Q2How much would $10,000 invested in BIIB be worth today?

A $10,000 investment in Biogen Inc. one year ago would be worth $15,528 today, representing a gain of $5,528.

Q3Does BIIB pay dividends?

Biogen Inc. (BIIB) does not currently pay dividends. Many growth-focused companies reinvest profits back into the business rather than distributing them as dividends. For BIIB, the total return equals the price-only return.

Q4Did BIIB beat the S&P 500?

Yes, Biogen Inc. (BIIB) outperformed the S&P 500 by 26.84 percentage points over the past year. BIIB delivered a total return of 55.28%, compared to the S&P 500's 28.44%. This 26.84pp alpha means investors in BIIB earned more than a passive S&P 500 index fund.

Q5What is BIIB's worst drawdown?

Biogen Inc. (BIIB) experienced a maximum drawdown of -14.34% over the past year, declining from its peak on 2026-02-06 to its trough on 2026-04-06. The stock has not yet fully recovered to its prior peak. Maximum drawdown measures the worst peak-to-trough decline and is an important risk metric for investors.

Q6What is BIIB's long-term total return over 10, 20, or 30 years?

Here are Biogen Inc. (BIIB)'s long-term returns with dividends reinvested. Over 10 years, the total return is -28.5% (-3.3% CAGR) — $10,000 would have grown to $7,147. Over 20 years: 303.1% total return (7.2% CAGR) — $10,000 → $40,309. Over 30 years: 4026.5% total return (13.2% CAGR) — $10,000 → $412,645. Long-term investors benefit from compounding: dividends buy additional shares, which generate their own dividends, creating an exponential growth effect.

Q7What was BIIB's best and worst year?

Biogen Inc.'s best calendar year was 1995 with a total return of 420.0%. Its worst year was 2002 with a total return of -51.3%. This range shows the volatility investors should expect — the difference between the best and worst year is 471.3 percentage points.