Dollar cost averaging (DCA) in GBIO means investing a fixed amount at regular intervals, regardless of share price. This strategy reduces timing risk and builds wealth steadily through market ups and downs.
How This Calculator Works
Our DCA calculator simulates real market conditions using historical price data. It accounts for dividend reinvestment (DRIP), where each dividend payment automatically purchases additional shares. You can adjust the investment amount, frequency, time period, and compare against benchmarks like the S&P 500 and Nasdaq-100.
Same amount invested each month — only the day of purchase changes. How much does intra-month timing actually matter?
Best Timing DCA
StrategyBuy on monthly low
Total Return-71.3%
Final Value$12.6K
Perfectly timed — impossible in practice
Your DCA
StrategyBuy on 1st of month
Total Return-76.5%
Final Value$10.2K
Consistent — no timing needed
Worst Timing DCA
StrategyBuy on monthly high
Total Return-79.0%
Final Value$9.3K
Worst possible — still beats not investing
Best vs Worst gap7.6 pp
Your timing vs best-5.2%
Your timing vs worst+2.5%
If You Keep Investing…
Based on this stock's historical CAGR of -22.6%/yr — put in vs. walk away with.
Your Plan
At $500/mo, this could grow into:
3 Years$18K~1.0x your moneyfrom $18K invested
5 Years$30K~1.0x your moneyfrom $30K invested
10 Years$60K~1.0x your moneyfrom $60K invested
20 Years$120K~1.0x your moneyfrom $120K invested
Compare Other Monthly Amounts
Same CAGR assumption. Use this to pressure-test different monthly commitments.
Monthly
3 Years~1.0x your money
5 Years~1.0x your money
10 Years~1.0x your money
20 Years~1.0x your money
$100/mo
$4K+$0 est. gain
$6K+$0 est. gain
$12K+$0 est. gain
$24K+$0 est. gain
$250/mo
$9K+$0 est. gain
$15K+$0 est. gain
$30K+$0 est. gain
$60K+$0 est. gain
$500/mo
$18K+$0 est. gain
$30K+$0 est. gain
$60K+$0 est. gain
$120K+$0 est. gain
$1,000/mo
$36K+$0 est. gain
$60K+$0 est. gain
$120K+$0 est. gain
$240K+$0 est. gain
* Projection assumes historical CAGR of -22.6% continues. Actual returns will vary.
Your DCA Results by Date
68 purchases
Date
Price
Invested
Portfolio Value
% Gain
Gain ($)
Jun 12, 2020
$246.90
$10,000
$10,000
+0.00%
$0
Jul 13, 2020
$180.70
$10,500
$7,819
-25.54%
$-2,681
Aug 12, 2020
$196.90
$11,000
$9,020
-18.00%
$-1,980
Sep 14, 2020
$304.50
$11,500
$14,449
+25.64%
$2,949
Oct 12, 2020
$278.00
$12,000
$13,691
+14.09%
$1,691
Nov 12, 2020
$310.50
$12,500
$15,792
+26.34%
$3,292
Dec 14, 2020
$365.00
$13,000
$19,064
+46.64%
$6,064
Jan 12, 2021
$286.00
$13,500
$15,438
+14.35%
$1,938
Feb 12, 2021
$331.20
$14,000
$18,377
+31.27%
$4,377
Mar 12, 2021
$347.50
$14,500
$19,782
+36.43%
$5,282
Apr 12, 2021
$260.60
$15,000
$15,335
+2.23%
$335
May 12, 2021
$306.00
$15,500
$18,507
+19.40%
$3,007
Jun 14, 2021
$278.90
$16,000
$17,368
+8.55%
$1,368
Jul 12, 2021
$238.70
$16,500
$15,364
-6.88%
$-1,136
Aug 12, 2021
$218.40
$17,000
$14,558
-14.37%
$-2,442
Sep 13, 2021
$271.40
$17,500
$18,590
+6.23%
$1,090
Oct 12, 2021
$222.40
$18,000
$15,734
-12.59%
$-2,266
Nov 12, 2021
$211.80
$18,500
$15,484
-16.30%
$-3,016
Dec 13, 2021
$139.00
$19,000
$10,662
-43.89%
$-8,338
Jan 12, 2022
$66.50
$19,500
$5,601
-71.28%
$-13,899
Feb 14, 2022
$47.00
$20,000
$4,458
-77.71%
$-15,542
Mar 14, 2022
$45.00
$20,500
$4,769
-76.74%
$-15,731
Apr 12, 2022
$88.50
$21,000
$9,879
-52.96%
$-11,121
May 12, 2022
$57.50
$21,500
$6,918
-67.82%
$-14,582
Jun 13, 2022
$54.00
$22,000
$6,997
-68.19%
$-15,003
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Frequently Asked Questions
Common questions about DCA investing in GBIO
Investing $500 per month in Generation Bio Co. (GBIO) over the past 6 years would be worth approximately $10K today. That's -76.5% total return on $44K invested, with a -22.6% compound annual growth rate (CAGR).