Stop guessing the bottom.
DoubleTrends™ gives ETF investors a clear S&P 500 dip signal. It watches the index every day and sends a Telegram alert when our rules-based model detects an oversold reversal — the moment selling pressure starts to break. Use it to act on S&P 500 exposure through funds such as VOO, SPY, or IVV with less guesswork.
Rules-based S&P 500 index signal. Educational market information only. Not financial, investment, or trading advice.
Ten years. Every dip.
Watch the S&P 500 index replay from 2016. Each ▲ marks a DoubleTrends™ oversold-reversal alert — the same kind of signal a subscriber would receive. The rule fired at major stress points including the 2018 selloff, the COVID crash, the 2022 bear-market low, the 2023 correction, the 2025 tariff crash, and the 2026 Iran-war selloff.
S&P 500 index · Daily · 12 signals, 2016–2026. Historical signals shown for illustration.
Three steps. Then the rule watches.
Subscribe
One subscription gives you access to the S&P 500 signal channel. You are not buying a dashboard or a stream of daily commentary — just the alert when the rule fires.
Join the channel
After checkout, you receive a private, single-use invite to the Telegram channel. That channel is where the production alert is delivered.
Get the alert
When the S&P 500 index meets the oversold-reversal rule, everyone receives the same message the same day. Historically this is rare — exactly the point. You get notified when the setup matters, not every time the market moves.
One signal. One subscription.
Built for investors who want a clean rule, not another dashboard. Subscribe once, join the channel, and let the S&P 500 index signal come to you when the market is washed out and the model sees the reversal begin.
Annual S&P 500 reversal monitoring. Designed for the moments when long-term index investors usually hesitate: corrections, bear-market pressure, and sharp selloffs. Rare alerts only. No daily noise.
- S&P 500 index dip alerts
- Telegram delivery
- Cancel anytime
- More indices coming
For educational and informational purposes only. DoubleTrends™ does not provide financial, investment, trading, tax, or legal advice, and does not make personalized recommendations. The signal is generated from the S&P 500 index itself; ETF examples such as VOO, SPY, and IVV are implementation vehicles investors may already use. Historical signals and backtested results do not guarantee future performance.
Questions
What exactly do I receive?
A short Telegram message when the S&P 500 index meets the DoubleTrends™ oversold-reversal rule. The message gives the signal date and plain-language context so you know when the dip signal has fired. It does not tell you what to buy, how much to buy, or how to size a position.
How often will it fire?
Rarely. Since 2016, the S&P 500 index version has produced 12 signals. Some years may have several signals during a volatile market; other periods may have none. The point is to reduce noise, not create a daily trading feed.
Is this financial advice?
No. DoubleTrends™ provides educational, rules-based market information only. It does not consider your financial situation, objectives, risk tolerance, tax position, or portfolio allocation, and it is not a recommendation to buy, sell, or hold any security.
What does DoubleTrends™ measure?
A dual Williams %R momentum model on the daily S&P 500 index. It looks for two things: a deeply oversold condition across short and longer windows, followed by a reversal out of that oversold state.
Which assets are covered?
The S&P 500 index today, for ETF investors using funds such as VOO, SPY, or IVV. Nasdaq 100 support, including QQQ, is planned.
Does the signal run on VOO, SPY, or IVV?
No. The production signal runs on the S&P 500 index itself. VOO, SPY, and IVV are examples of ETFs investors may use to express S&P 500 exposure. Keeping the signal at the index level avoids tying the model to one fund's mechanics.
Does a signal mean I should buy immediately?
No. A signal means the model detected an oversold reversal in the index. It is a timing reference, not a personal recommendation. Some investors may use it to review a planned contribution, staged entry, or cash deployment rule; others may do nothing.
How do I get access after paying?
You receive a private, single-use invite link to the Telegram channel right after checkout.