Signal. — Free Stock & ETF Screener with Honest Backtesting

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Data Source

Yahoo

Micro Micro Cap Under $300M

0 signals ▾

No signals in this tier yet.

Symbol	Status	Signals	Price	200 DMA	20 DMA	RSI	MACD / Sig	BB	Fwd P/E	Trl P/E	PEG

Small Small Cap $300M – $2B

0 signals ▾

No signals in this tier yet.

Symbol	Status	Signals	Price	200 DMA	20 DMA	RSI	MACD / Sig	BB	Fwd P/E	Trl P/E	PEG

Mid Mid Cap $2B – $10B

0 signals ▾

No signals in this tier yet.

Symbol	Status	Signals	Price	200 DMA	20 DMA	RSI	MACD / Sig	BB	Fwd P/E	Trl P/E	PEG

Large Large Cap $10B – $200B

0 signals ▾

No signals in this tier yet.

Symbol	Status	Signals	Price	200 DMA	20 DMA	RSI	MACD / Sig	BB	Fwd P/E	Trl P/E	PEG

Mega Mega Cap Over $200B

0 signals ▾

No signals in this tier yet.

Symbol	Status	Signals	Price	200 DMA	20 DMA	RSI	MACD / Sig	BB	Fwd P/E	Trl P/E	PEG

Strategy Backtest

Replays your exact Settings criteria against history — every alert comes with its track record.

Prove it before you trade itEnter a ticker to see how your current signal configuration would have performed historically. Uses the exact thresholds from Settings.

Account

sync your data across devices

Indicator Settings — buy parameters

RSI — fire below

Default 40. Lower = stricter.

Required signals to fire

Long Moving Average — lookback (days)

Default 200. Fires when price is below it. Try 100 for shorter-term.

Short Moving Average — lookback (days)

Default 20. Fires when price is below it, and sets the Bollinger Bands basis (the bands are built on this same average).

Bollinger Bands — condition

MACD — lookback preset

Fills the three periods below. Edit any of them to switch to Custom.

MACD — fast EMA (days)

Default 12.

MACD — slow EMA (days)

Default 26.

MACD — signal line (days)

Default 9.

MACD — condition Require MACD to be turning up

The reading must still be below the threshold above, but also higher than the previous day — so the signal waits for momentum to actually inflect instead of flagging a stock that is still falling.

Email cooldown (minutes)

Min time between repeat alerts for same stock. Default 60 min.

Color theme

Applies instantly, saved automatically.

Scan speed

Slow — Massive first

1,500ms between tickers
Tries Massive, falls back to Yahoo
Stays under rate limits

Fast — Yahoo only

Scans 6 tickers at once
Skips Massive entirely
No rate limit issues

Portfolio — show position size as

Amount is shares × entry price. Editing either one updates the position.

Show "Watch all" continuous mode

Adds the non-stop cycling scan button to the Screener. Off by default — "Scan now" covers most uses.

Sell Parameters

The exit side of the strategy — used by the Backtest's "Until sell params hit" mode.

Required sell signals to fire

Sell — price above MA 1 (days)

Default 200. Sell condition: price has recovered above this MA.

Sell — price above MA 2 (days)

Default 20. A faster confirmation MA.

Sell — Bollinger Bands condition

Uses the same BB period as the buy side.

Sell — RSI at or above

Default 70 (overbought).

Sell — MACD line above

Default +1.0. Uses the same MACD periods as the buy side.

Scheduled Scans

Site must be open in browser

Add times to auto-trigger a full scan and email any signals found. Uses your local time.

Danger Zone

Signal. is a research and education tool — not investment advice. Market data may be delayed; verify independently before making decisions.