Tools
Free calculators built on DawnScan’s own measured data. No sign-up, no ads inside the results, and no stock recommendations — each tool simply shows what the numbers say.
Investment Simulator
What would a Korean won investment in any of 100 US stocks and ETFs be worth today?
Dividend-adjusted prices and KRW/USD exchange rates are applied, and the same period in SPY
is shown for comparison. Results are shareable as a link.
Open the simulator →
Overseas Stock Tax Calculator
Estimates South Korean capital-gains tax on overseas-stock trades, including the annual
250-man-won deduction and loss-offsetting. Built on South Korean tax rules — for Korean
tax residents.
Open the tax calculator →
Pension vs. Direct Investing After-Tax Comparison
Compares the after-tax result of direct investing, Pension Savings/IRP, and ISA for the
same principal, period, and assumed return. Shows unfavorable conditions like the
early-termination penalty too — no conclusion is drawn.
Compare after-tax results →
Leveraged ETF Decay Simulator
Shows how much volatility decay actually costs a 2x/3x leveraged ETF (like TQQQ or SOXL) held
long term, using real index data or a custom volatility/trend scenario.
Open the leverage simulator →
Portfolio Rebalancing Calculator
Enter your holdings and target allocation, and it computes the optimal buy/sell path
including fees and FX cost, plus an asset-correlation heatmap.
Open the rebalancing calculator →
DCA Simulator
Simulates a fixed amount invested on a regular schedule (weekly, monthly, quarterly) using
real price data or an assumed return, and compares the result against a lump-sum investment.
Open the DCA simulator →
Averaging-Down Exit Simulator
Calculates an ATR-based split-buy path to lower your average cost, and shows exactly how
much of a bounce you'd need to break even at each step.
Open the exit simulator →
Pre-Surge Scanner
The Top 10 US pre-surge candidates from today's automatic post-close scan, with score,
signals, risk level, and AI-written rationale per stock. Updated once daily.
See today's scan →
Scanner Hit Rate
How the scanner's daily Top 10 actually performed afterward, tracked automatically —
hit rate, volatility-matched lift, and per-setup performance, published as-is, misses included.
See the track record →
Signal Base Rates
Not a calculator but the dataset behind everything else: how often each technical signal was
actually followed by a surge, measured across the full universe rather than a hand-picked sample.
See the base rates →
Parking Account vs. Dividend and Growth Asset Comparison
For the same amount and period, compares the after-tax cash income, ending asset value, and
breakeven price of a parking account against a dividend-type and a growth-type asset you
define. Based on assumptions you enter, not a specific stock's actual performance.
Compare assets →
How these tools differ
DawnScan does not sell picks or predictions. Every tool here is built on data we collected and measured ourselves, and where a result is uncertain we say so rather than rounding it into confidence. Nothing on this site is investment advice, and past results never guarantee future returns.