# DoubleTrends™ DoubleTrends™ is a rules-based S&P 500 index signal for ETF investors. It tracks the S&P 500 index and sends a Telegram alert when its oversold-reversal rule fires. The site also publishes research notes on drawdowns, market exhaustion, investor behavior, and market-structure tools. Important: the content is educational market information only. It is not financial, investment, trading, tax, or legal advice, and it is not a recommendation to buy, sell, or hold any security. ## Primary Pages - S&P 500 Signal for ETF Investors: https://doubletrends.com/ A rules-based S&P 500 signal built for ETF investors using VOO, SPY, or IVV. Review the live replay, inspect every dated signal, and test the Telegram bot in your browser. - How the DoubleTrends™ S&P 500 Signal Works: https://doubletrends.com/method.html See how the DoubleTrends™ S&P 500 signal works: dual-period Williams %R, drawdown features, VIX and macro anchors, four market regimes, and the point-in-time rules behind the track record. - Pricing, Trial, and Telegram Delivery: https://doubletrends.com/product.html See DoubleTrends™ pricing at USD $149 per year, the 30-day free trial, refund rules, private Telegram delivery, and what subscribers receive before they buy. - Academy — Research & Education: https://doubletrends.com/academy/ Research notes on S&P 500 drawdowns and investor behavior, primers on the standard tools the engine uses (Williams %R, drawdown, volume profile), and one article per macro anchor (VIX, Fed funds, unemployment, CPI). - Mission: https://doubletrends.com/company/mission.html Why DoubleTrends™ exists and the principles behind it: one transparent, rule-based oversold-reversal signal — transparency over hype, education over dependency, narrow over vague. - Consulting: https://doubletrends.com/company/consulting.html The data engineering and quantitative research behind DoubleTrends™, available for custom projects: ML modelling, statistical analysis, forecasting, and data collection. - Careers: https://doubletrends.com/company/careers.html The three long-term functions we expect to build around at DoubleTrends™: Quantitative Analyst, Data Engineer, and Audience & Partnerships Lead. Not currently hiring. - Contact: https://doubletrends.com/company/contact.html Contact DoubleTrends™ for product questions, data and quant service inquiries, research questions, partnerships, or company matters. - Brand — Identity & Construction | CDS: https://doubletrends.com/brand.html How the CDS logo and favicon are constructed: four geometric constraints that lock the rust bar to S, a bracket scale that aligns the inner cavity with the letter range, color palette, typography, and asset inventory. - Free Trial & Refunds: https://doubletrends.com/legal/refund-policy.html DoubleTrends™ starts with a 30-day free trial — $0 today, cancel anytime. After that, a full refund within 14 days of any charge if no signal has fired. - Terms of Service: https://doubletrends.com/legal/terms.html The terms for using the DoubleTrends™ website and subscription: billing, acceptable use, disclaimers, and limitation of liability. Governed by Ontario law. - Privacy Policy: https://doubletrends.com/legal/privacy.html How DoubleTrends™ handles your data: no cookies, no analytics, no tracking — only the minimum needed to bill via Stripe and deliver the Telegram signal. - Disclaimer: https://doubletrends.com/legal/disclaimer.html DoubleTrends™ provides educational, rules-based market information only — not financial, investment, trading, tax, or legal advice. Trading involves risk. ## Academy Articles - S&P 500 Drawdowns Since 1950: How Often Corrections and Bear Markets Happen: https://doubletrends.com/academy/sp-500-drawdowns.html How often the S&P 500 falls 5%, 10%, 20%, and 30% since 1950, how long recovery usually takes, and what those drawdown base rates mean for buying the dip. - Why Buying the Dip Is Hard: The Best Days Happen During Crashes: https://doubletrends.com/academy/why-buying-the-dip-is-hard.html Why buying the dip feels hardest when expected returns improve: the S&P 500's best days cluster inside crashes, and missing a few of them changes long-run results. - Every DoubleTrends™ S&P 500 Signal Since 2016: https://doubletrends.com/academy/every-sp-500-bottom-since-2016.html Every DoubleTrends™ signal on the S&P 500 since 2016, the regime and drawdown around each fire, and the forward returns that followed. - What Are Volume Profile and VWAP?: https://doubletrends.com/academy/volume-profile-vwap.html A plain-English primer on Volume Profile and VWAP: what each tool measures, how institutional desks use them, and where they fit in market structure. - What Is Double Trend Exhaustion? The DoubleTrends™ Signal Explained: https://doubletrends.com/academy/double-trend-exhaustion.html What double trend exhaustion means in DoubleTrends™: dual-period Williams %R on a short and long clock, both turning up out of deep oversold territory. - What Is Maximum Drawdown? Depth, Duration, and Sharpness: https://doubletrends.com/academy/maximum-drawdown.html What maximum drawdown means for market stress: drawdown depth from the trailing one-year high, duration since that high, and ten-day sharpness. - What Is VIX Percentile? Reading Volatility Against Itself: https://doubletrends.com/academy/vix-percentile.html What VIX percentile means, why it is more useful than the raw VIX level, and how DoubleTrends™ uses it inside the market regime classifier. - What Is the Fed Funds Rate and Why Does It Matter for Stocks?: https://doubletrends.com/academy/fed-funds-rate.html What the fed funds rate is, why its recent change matters more than the level, and how DoubleTrends™ uses it inside the bear-regime overlay. - Why the Unemployment Rate Matters for Market Regimes: https://doubletrends.com/academy/unemployment.html Why the US unemployment rate lags but rarely gives false positives, how DoubleTrends™ reads its slope, and where it fits inside the bear overlay. - What CPI Inflation Tells You About Fed Pressure: https://doubletrends.com/academy/cpi-inflation.html Why year-over-year CPI matters as context for Fed policy, and how DoubleTrends™ reads high inflation together with active tightening inside the bear gate. ## Machine-Readable Data - Replay data for the S&P 500 signal chart: https://doubletrends.com/public/replay/sp500.json - XML sitemap: https://doubletrends.com/sitemap.xml - Robots policy: https://doubletrends.com/robots.txt ## Entity Summary - Brand: DoubleTrends™ - Operator: DoubleTrends L.L.C. - Coverage: S&P 500 index - Intended audience: ETF investors using S&P 500 exposure such as VOO, SPY, or IVV - Delivery: Telegram alert - Signal type: low-frequency, rules-based oversold reversal - Contact: info@doubletrends.com