Dollar cost averaging (DCA) in PTCT 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+65.9%
Final Value$79.7K
Perfectly timed — impossible in practice
Your DCA
StrategyBuy on 1st of month
Total Return+53.2%
Final Value$73.5K
Consistent — no timing needed
Worst Timing DCA
StrategyBuy on monthly high
Total Return+42.7%
Final Value$68.5K
Worst possible — still beats not investing
Best vs Worst gap23.3 pp
Your timing vs best-12.8%
Your timing vs worst+10.5%
If You Keep Investing…
Based on this stock's historical CAGR of 7.0%/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$85K~1.4x your moneyfrom $60K invested
20 Years$252K~2.1x 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~1.4x your money
20 Years~2.1x your money
$100/mo
$4K+$378 est. gain
$7K+$1K est. gain
$17K+$5K est. gain
$50K+$26K est. gain
$250/mo
$10K+$944 est. gain
$18K+$3K est. gain
$43K+$13K est. gain
$126K+$66K est. gain
$500/mo
$20K+$2K est. gain
$36K+$6K est. gain
$85K+$25K est. gain
$252K+$132K est. gain
$1,000/mo
$40K+$4K est. gain
$71K+$11K est. gain
$171K+$51K est. gain
$505K+$265K est. gain
* Projection assumes historical CAGR of 7.0% continues. Actual returns will vary.
Your DCA Results by Date
77 purchases
Date
Price
Invested
Portfolio Value
% Gain
Gain ($)
Jan 2, 2020
$48.44
$10,000
$10,000
+0.00%
$0
Feb 3, 2020
$52.25
$10,500
$11,287
+7.49%
$787
Mar 2, 2020
$54.93
$11,000
$12,365
+12.41%
$1,365
Apr 2, 2020
$44.96
$11,500
$10,621
-7.64%
$-879
May 4, 2020
$48.20
$12,000
$11,886
-0.95%
$-114
Jun 2, 2020
$50.95
$12,500
$13,065
+4.52%
$565
Jul 2, 2020
$53.00
$13,000
$14,090
+8.39%
$1,090
Aug 3, 2020
$47.67
$13,500
$13,173
-2.42%
$-327
Sep 2, 2020
$50.34
$14,000
$14,411
+2.94%
$411
Oct 2, 2020
$47.96
$14,500
$14,230
-1.86%
$-270
Nov 2, 2020
$55.02
$15,000
$16,825
+12.16%
$1,825
Dec 2, 2020
$63.86
$15,500
$20,028
+29.21%
$4,528
Jan 4, 2021
$60.50
$16,000
$19,474
+21.71%
$3,474
Feb 2, 2021
$60.24
$16,500
$19,890
+20.55%
$3,390
Mar 2, 2021
$57.32
$17,000
$19,426
+14.27%
$2,426
Apr 5, 2021
$49.37
$17,500
$17,232
-1.53%
$-268
May 3, 2021
$40.77
$18,000
$14,730
-18.17%
$-3,270
Jun 2, 2021
$38.74
$18,500
$14,497
-21.64%
$-4,003
Jul 2, 2021
$43.09
$19,000
$16,624
-12.50%
$-2,376
Aug 2, 2021
$38.68
$19,500
$15,423
-20.91%
$-4,077
Sep 2, 2021
$44.59
$20,000
$18,280
-8.60%
$-1,720
Oct 4, 2021
$36.85
$20,500
$15,607
-23.87%
$-4,893
Nov 2, 2021
$39.85
$21,000
$17,377
-17.25%
$-3,623
Dec 2, 2021
$37.11
$21,500
$16,682
-22.41%
$-4,818
Jan 3, 2022
$42.58
$22,000
$19,641
-10.72%
$-2,359
Page 1 of 4
Frequently Asked Questions
Common questions about DCA investing in PTCT
Investing $500 per month in PTC Therapeutics, Inc. (PTCT) over the past 6 years would be worth approximately $74K today. That's +53.2% total return on $48K invested, with a +7.0% compound annual growth rate (CAGR).