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Generation Bio Co. (GBIO) Total Return Calculator with Dividends Reinvested

Generation Bio Co.

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The total return for Generation Bio Co. (GBIO) stock is +36.92% over the past 12 months. So far it's down 1.93% this year. The 5-year total return is -98.35%, meaning $10,000 invested in GBIO stock 5 years ago would be worth $165 today. Total return includes price appreciation plus reinvesting any dividends paid out.

If you invested $10,000 in GBIO 1 year ago, it would be worth $14,833 today — you'd have gained $4,833.

With Dividends Reinvested$14,833+48.33%

Price Only (No DRIP)$14,833+48.33%

Period2025-05-08 → 2026-02-10

Price

Total Return (DRIP)

S&P 500

If You Invested $10,000 in GBIO

1Y$13,692+$3,692 (+36.9%)36.9% CAGR

3Y$1,143-$8,857 (-88.6%)-51.5% CAGR

5Y$165-$9,835 (-98.3%)-56.0% CAGR

10Y$216-$9,784 (-97.8%)-31.8% CAGR

15Y$216-$9,784 (-97.8%)-22.6% CAGR

20Y$216-$9,784 (-97.8%)-17.4% CAGR

30Y$216-$9,784 (-97.8%)-12.0% CAGR

Generation Bio Co. did not pay dividends during this period. Total return = price return.

Loading GBIO total return...

As of 2026-05-07

Returns at a Glance

Period	Total Return	CAGR	Price Only	Div. Contrib.	$10K →
YTD	-1.93%	—	-1.93%	—	$9,807
1Y	+36.92%	36.92%	+36.92%	—	$13,692
3Y	-88.57%	-51.46%	-88.57%	—	$1,143
5Y	-98.35%	-55.99%	-98.35%	—	$165
10Y	-97.84%	-31.84%	-97.84%	—	$216
15Y	-97.84%	-22.55%	-97.84%	—	$216
20Y	-97.84%	-17.44%	-97.84%	—	$216
30Y	-97.84%	-12.00%	-97.84%	—	$216

Risk & Highlights

Best Year+14.82%2020

Worst Year-76.46%2021

Max Drawdown-31.82%2025-06-06 → 2025-06-27 · Recovered 2025-07-14

Annual Returns

Year	Total Return	Price Return	Div.	S&P 500	vs S&P
2026YTD	-1.93%	-1.93%	—	+0.41%	-2.3pp
2025	-48.83%	-48.83%	—	+16.64%	-65.5pp
2024	-43.01%	-43.01%	—	+24.00%	-67.0pp
2023	-58.85%	-58.85%	—	+24.81%	-83.7pp
2022	-49.36%	-49.36%	—	-19.95%	-29.4pp

GBIO outperformed the S&P 500 by 6.55pp over the past year (+36.92% vs +30.37%).

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GBIO 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
GBIOGeneration Bio Co.	$36M	—	-1.9%	+36.9%	—	-88.6%	-98.3%	-97.8%
ARWRArrowhead Pharmaceuticals, Inc.	$10.9B	+27.4%	+15.0%	+496.9%	—	+92.7%	+17.4%	+1253.3%
RCKTRocket Pharmaceuticals, Inc.	$398M	+5.5%	+6.1%	-45.2%	—	-82.8%	-91.6%	-91.3%
RAREUltragenyx Pharmaceutical Inc.	$2.6B	+12.9%	+10.7%	-21.8%	—	-44.5%	-77.2%	-59.4%
FOLDAmicus Therapeutics, Inc.	$4.5B	+0.1%	+1.5%	+137.9%	—	+19.0%	+48.6%	+119.2%
KRYSKrystal Biotech, Inc.	$8.7B	+12.4%	+20.2%	+116.9%	—	+238.5%	+319.2%	+2688.5%
BEAMBeam Therapeutics Inc.	$3.2B	+28.5%	+16.0%	+93.9%	—	-5.6%	-55.6%	+67.8%
NTLAIntellia Therapeutics, Inc.	$1.6B	+1.2%	+48.9%	+88.1%	—	-68.3%	-79.8%	-42.9%
EDITEditas Medicine, Inc.	$297M	+10.6%	+47.8%	+127.8%	—	-68.5%	-91.1%	-90.0%
CRSPCRISPR Therapeutics AG	$5.1B	+5.5%	-2.5%	+53.1%	—	-6.3%	-51.3%	+272.0%
PRMEPrime Medicine, Inc.	$562M	-8.7%	-11.8%	+119.4%	—	-78.0%	-79.7%	-55.5%

Compare:GBIO vs ARWR GBIO vs RCKT GBIO vs RARE GBIO vs ARWR vs RCKT

About GBIO Dividend Returns

Generation Bio Co. (GBIO) 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 GBIO over the past year?

Generation Bio Co. (GBIO) delivered a return of 36.92% over the past year. Since GBIO does not currently pay dividends, the total return equals the price-only return.

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

A $10,000 investment in Generation Bio Co. one year ago would be worth $13,692 today, representing a gain of $3,692.

Q3Does GBIO pay dividends?

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

Q4Did GBIO beat the S&P 500?

Yes, Generation Bio Co. (GBIO) outperformed the S&P 500 by 6.55 percentage points over the past year. GBIO delivered a total return of 36.92%, compared to the S&P 500's 30.37%. This 6.55pp alpha means investors in GBIO earned more than a passive S&P 500 index fund.

Q5What is GBIO's worst drawdown?

Generation Bio Co. (GBIO) experienced a maximum drawdown of -31.82% over the past year, declining from its peak on 2025-06-06 to its trough on 2025-06-27. The stock recovered to its prior peak by 2025-07-14. Maximum drawdown measures the worst peak-to-trough decline and is an important risk metric for investors.

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

Here are Generation Bio Co. (GBIO)'s long-term returns with dividends reinvested. Over 10 years, the total return is -97.8% (-31.8% CAGR) — $10,000 would have grown to $216. Over 20 years: -97.8% total return (-17.4% CAGR) — $10,000 → $216. Over 30 years: -97.8% total return (-12.0% CAGR) — $10,000 → $216. Long-term investors benefit from compounding: dividends buy additional shares, which generate their own dividends, creating an exponential growth effect.

Q7What was GBIO's best and worst year?

Generation Bio Co.'s best calendar year was 2020 with a total return of 14.8%. Its worst year was 2021 with a total return of -76.5%. This range shows the volatility investors should expect — the difference between the best and worst year is 91.3 percentage points.