Dollar cost averaging (DCA) in PBYI 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+80.7%
Final Value$86.7K
Perfectly timed — impossible in practice
Your DCA
StrategyBuy on 1st of month
Total Return+61.3%
Final Value$77.4K
Consistent — no timing needed
Worst Timing DCA
StrategyBuy on monthly high
Total Return+41.4%
Final Value$67.9K
Worst possible — still beats not investing
Best vs Worst gap39.2 pp
Your timing vs best-19.4%
Your timing vs worst+19.9%
If You Keep Investing…
Based on this stock's historical CAGR of 7.8%/yr — put in vs. walk away with.
Your Plan
At $500/mo, this could grow into:
3 Years$20K~1.1x your moneyfrom $18K invested
5 Years$36K~1.2x your moneyfrom $30K invested
10 Years$89K~1.5x your moneyfrom $60K invested
20 Years$279K~2.3x your moneyfrom $120K invested
Compare Other Monthly Amounts
Same CAGR assumption. Use this to pressure-test different monthly commitments.
Monthly
3 Years~1.1x your money
5 Years~1.2x your money
10 Years~1.5x your money
20 Years~2.3x your money
$100/mo
$4K+$427 est. gain
$7K+$1K est. gain
$18K+$6K est. gain
$56K+$32K est. gain
$250/mo
$10K+$1K est. gain
$18K+$3K est. gain
$45K+$15K est. gain
$140K+$80K est. gain
$500/mo
$20K+$2K est. gain
$36K+$6K est. gain
$89K+$29K est. gain
$279K+$159K est. gain
$1,000/mo
$40K+$4K est. gain
$73K+$13K est. gain
$179K+$59K est. gain
$558K+$318K est. gain
* Projection assumes historical CAGR of 7.8% continues. Actual returns will vary.
Your DCA Results by Date
77 purchases
Date
Price
Invested
Portfolio Value
% Gain
Gain ($)
Jan 2, 2020
$8.43
$10,000
$10,000
+0.00%
$0
Feb 3, 2020
$8.04
$10,500
$10,037
-4.41%
$-463
Mar 2, 2020
$10.69
$11,000
$13,846
+25.87%
$2,846
Apr 2, 2020
$7.35
$11,500
$10,020
-12.87%
$-1,480
May 4, 2020
$10.34
$12,000
$14,596
+21.63%
$2,596
Jun 2, 2020
$11.25
$12,500
$16,380
+31.04%
$3,880
Jul 2, 2020
$10.53
$13,000
$15,832
+21.78%
$2,832
Aug 3, 2020
$10.89
$13,500
$16,873
+24.99%
$3,373
Sep 2, 2020
$9.87
$14,000
$15,793
+12.81%
$1,793
Oct 2, 2020
$9.91
$14,500
$16,357
+12.81%
$1,857
Nov 2, 2020
$7.78
$15,000
$13,341
-11.06%
$-1,659
Dec 2, 2020
$11.45
$15,500
$20,135
+29.90%
$4,635
Jan 4, 2021
$10.33
$16,000
$18,665
+16.66%
$2,665
Feb 2, 2021
$12.23
$16,500
$22,598
+36.96%
$6,098
Mar 2, 2021
$9.96
$17,000
$18,904
+11.20%
$1,904
Apr 5, 2021
$9.97
$17,500
$19,423
+10.99%
$1,923
May 3, 2021
$10.15
$18,000
$20,273
+12.63%
$2,273
Jun 2, 2021
$10.81
$18,500
$22,092
+19.41%
$3,592
Jul 2, 2021
$8.82
$19,000
$18,525
-2.50%
$-475
Aug 2, 2021
$7.67
$19,500
$16,609
-14.82%
$-2,891
Sep 2, 2021
$7.48
$20,000
$16,698
-16.51%
$-3,302
Oct 4, 2021
$6.27
$20,500
$14,497
-29.28%
$-6,003
Nov 2, 2021
$6.13
$21,000
$14,673
-30.13%
$-6,327
Dec 2, 2021
$3.01
$21,500
$7,705
-64.16%
$-13,795
Jan 3, 2022
$3.19
$22,000
$8,666
-60.61%
$-13,334
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Frequently Asked Questions
Common questions about DCA investing in PBYI
Investing $500 per month in Puma Biotechnology, Inc. (PBYI) over the past 6 years would be worth approximately $77K today. That's +61.3% total return on $48K invested, with a +7.8% compound annual growth rate (CAGR).