Stooq + Alpha Vantage
Use public and low-cost delayed quotes, historical OHLCV, CSV exports, and fallback snapshots for watchlists and backtests.
Review API docsLive market intelligence for active investors
Track market moves and test your next trade with evidence.
Use public and low-cost data sources for delayed market context, SEC filings, macro indicators, and transparent backtested strategy research.
- Loading
- Last quote pull
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- Watchlist advancers
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- Strongest ticker
Public quote layer
SEC filing data
FRED macro inputs
Backtest-ready exports
Live market intelligence
See what is moving before you choose a strategy.
The starter data layer uses public or low-cost sources first. Free quotes may be delayed or blocked by browser policy; BlankSzn shows the status and timestamp plainly.
Intraday move vs open
Watchlist
Credible source links
Public
- Yahoo Finance portfolios
- TradingView stock screener
- MarketWatch market data
- Alpha Vantage stock APIs
- SEC EDGAR APIs
- FRED macro API
- Stooq public quotes
Waiting for a quote response.
| Ticker | Last | Change vs Open | Open | High | Low | Volume | Quote Time | Verify |
|---|---|---|---|---|---|---|---|---|
| Loading public market data... | ||||||||
Low-cost data stack
Complete the platform with credible free and delayed data first.
BlankSzn can launch with public datasets, clear delay labels, and server-side API protection before upgrading to paid real-time market data.
SEC EDGAR APIs
Pull company submissions and XBRL financial statement facts without an API key for filing-aware strategy research.
Review SEC APIsFRED Economic Data
Track rates, CPI, unemployment, GDP, and other macro series to enrich risk-on/risk-off strategy context.
Review FRED APIYahoo, TradingView, MarketWatch
Cross-check watchlist tickers against trusted public portfolios, screeners, and market pages before acting on delayed snapshots.
Open Yahoo FinanceStrategy marketplace
Find a strategy that matches your trading style.
Compare rules, risk profile, holding period, and model history before adding any strategy to your watchlist.
Backtesting and performance
Evaluate return, risk, and consistency in one view.
Hypothetical results include transaction-cost assumptions and are intended for research, not guarantees.
| Strategy | Style | Avg Hold | Sharpe | Win Rate | Max DD |
|---|---|---|---|---|---|
| Factor Pulse | Value | 18 days | 1.31 | 59% | -13.2% |
| Breakout Atlas | Growth | 9 days | 1.48 | 64% | -10.7% |
| Vol Shield | Options | 32 days | 1.19 | 71% | -8.9% |
Hypothetical performance is net of modeled slippage and commissions. Live trading results may differ materially. Results are not personalized to any investor's objectives, account size, taxes, liquidity needs, or risk tolerance.
Pricing
Choose the research depth you need.
Starter
For investors validating a repeatable process.
$29/mo
- 10 strategy watchlists
- Weekly model updates
- Core risk metrics
- Email support
Most Popular
Pro
For active traders who need daily signal context.
$79/mo
- Unlimited strategy watchlists
- Daily alerts and exports
- Walk-forward analysis
- Community office hours
Private Access
Institutional
For teams managing models, exports, permissions, and account-level reporting.
Custom/team
- Team seats and permissions
- API and CSV pipelines
- Custom model review
- Priority support
Owner-only account
Your private BlankSzn institutional workspace.
This panel is removed from public navigation. Use the owner access route and passcode to unlock the local institutional workspace in this browser.
Education library
Learn the concepts and data sources behind every signal.
Plain-English research notes help traders understand risk, filings, macro regimes, and quote delays before taking action.
Position sizing when volatility expands
How ATR bands, realized volatility, and drawdown caps can reduce oversizing.
Read analysisUsing XBRL facts without paying for fundamentals
How public company filings can support valuation, quality, and earnings-risk screens.
Read analysisBuilding a rate-aware trading regime
Use FRED series to contextualize volatility, sector leadership, and cash allocation.
Read analysisLegal and risk disclosures
Clear boundaries before anyone trades.
These protections help position BlankSzn as an educational research platform, not personalized financial, legal, tax, or brokerage advice.
No Personalized Advice
BlankSzn provides educational research tools, market context, and hypothetical strategy analytics. The website does not know a visitor's full financial situation and does not make individualized buy, sell, hold, tax, legal, or suitability recommendations.
Trading Risk
Trading stocks, ETFs, and options involves risk, including loss of principal. Short-term trading, margin, leverage, and options can increase losses quickly. Users are responsible for independent research and should consult qualified professionals when needed.
Hypothetical Performance
Backtests and model results are hypothetical, may use assumptions, and may not reflect live execution, liquidity, slippage, taxes, fees, or behavioral limits. Past, simulated, or historical performance does not guarantee future results.
Market Data
Quotes may be delayed, incomplete, unavailable, or sourced from public feeds. Yahoo Finance, TradingView, MarketWatch, Stooq, SEC EDGAR, FRED, and other third-party sources are used for reference or verification and remain subject to their own terms, availability, and data rights.
Privacy
This static demo stores owner access and sample account state in the browser's local storage. Do not enter real passwords, brokerage credentials, payment information, or confidential personal data until production authentication, HTTPS, privacy notices, and data-processing controls are finalized.
Terms Before Launch
Before selling subscriptions, publish attorney-reviewed Terms of Service, Privacy Policy, Refund Policy, data-provider notices, testimonial disclosures, and any required investment-adviser, publisher, or affiliate disclosures for your business model and jurisdictions.
- Keep records for performance assumptions, testimonials, ratings, and advertising claims.
- Do not imply SEC, FINRA, broker, exchange, Yahoo, TradingView, or MarketWatch approval.
- Use licensed real-time market data before advertising real-time trading signals.
- Have a qualified attorney review registration, advisory, and marketing obligations before collecting paid subscribers.
Security and payments
Protect sensitive data by keeping it out of the site.
BlankSzn should use hosted checkout, tokenized payments, server-side secrets, and strict account controls before accepting real subscribers.
Never collect card data directly
Use Stripe Checkout, PayPal Checkout, Square Checkout, or another hosted payment flow so card numbers, CVC codes, and bank data are handled by the payment provider, not BlankSzn pages or local storage.
HTTPS everywhere
Force HTTPS on blankszn.com, enable HSTS after testing, keep TLS certificates renewed, and redirect all HTTP traffic to HTTPS before launch.
Use real authentication
Replace local demo access with server-side auth, hashed passwords, multi-factor authentication for owner/admin users, short sessions, and role-based permissions.
No API keys in the browser
Keep market-data keys, payment keys, webhook secrets, and admin credentials on the backend only. Public JavaScript should never expose production secrets.
Collect the minimum
Do not request SSNs, brokerage passwords, card numbers, or tax details. Store only account profile data needed for subscriptions, access, receipts, and support.
Log access, not secrets
Track failed logins, billing webhook events, admin changes, and suspicious traffic, but never log passwords, tokens, card data, or full personal financial details.
Stripe
No setup or monthly fee on standard pricing, strong hosted Checkout, subscriptions, webhooks, fraud tools, and PCI-compliant payment handling.
Review Stripe pricingPayPal
Good for quick customer trust and PayPal/Venmo-style checkout. Advanced card payments have no monthly fee, while some upgraded tools add monthly costs.
Review PayPal feesSquare
Simple online payments and invoices with no monthly plan required for basic use. Useful if you later sell research services both online and offline.
Review Square pricingAuthorize.net
Reliable traditional gateway, but it is not the lowest-cost starter option because its all-in-one plan lists a monthly gateway fee.
Review Authorize.net pricingTransparency
Common questions before you subscribe.
No. BlankSzn provides research tools and hypothetical strategy analytics. You remain responsible for all trading decisions.
Backtests include modeled slippage and commissions, and assumptions are shown alongside each strategy.
Pro and Institutional plans include CSV exports, watchlist downloads, and saved performance reports.
Start with transparent signals, not guesswork.
Explore strategy rules, historical risk, and model assumptions before your next trade.
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