📊 Signals

Signals are lines drawn over the price chart: technical indicators that LibreFolio computes from the stored prices, another asset or a currency pair to compare with, and reference curves such as a steady growth. Use them to read trend, momentum, volatility and risk at a glance.

🛠️ Add a signal

Open the Signals panel above the chart.
Pick a signal from one of its three menus: Technical Indicators, Data Comparison or Synthetic Benchmarks. In the indicators menu, type to search by name, description or the data an indicator uses.
Set its parameters on the card that appears; the chart follows.
Drag a card by its handle (arrows on a phone) to change the order, or remove it with 🗑️.

Grouped indicator search on the asset signals panel

Each line of a card, and each zone of indicators such as RSI, has its own colour and line style. Your signals are remembered for this asset, in this browser.

📉 Technical indicators

22 indicators, grouped by what they measure. Each name links to its theory page; the ? on a card opens the same page.

📈 Trend

SMA — simple average of the closing prices
EMA — average that weighs recent prices more
KAMA — average that adapts to market noise
ADX — trend strength, with +DI and −DI for its direction
Aroon — how recent the latest highs and lows are

⚡ Momentum

RSI — buying and selling pressure, with overbought and oversold zones
MACD — momentum between two moving averages, with a signal line and a histogram
PPO — the same momentum, in percent
ROC — speed of the price change
Stochastic RSI — where RSI sits within its recent range
CCI — distance from the average price

🌊 Volatility

Bollinger Bands — a band around a moving average that widens with volatility
ATR — volatility in price units
NATR — volatility in percent of the price
Donchian Channels — the highest high and the lowest low of the period

📊 Volume

OBV — pressure of the volume behind price moves
MFI — volume-weighted momentum

⚠️ Risk

Underwater Drawdown — how far the price is below its running peak (full history)
Rolling Return — price-only return over a sliding window
Rolling Volatility — annualized volatility over a sliding window
Rolling Sharpe Ratio — excess return per unit of volatility over a sliding window
Rolling Beta — how strongly the asset follows a comparison asset you pick

Periods count sessions, the days the asset was quoted: an SMA 200 covers 200 sessions, about 290 calendar days (why). The Window of the four rolling risk signals counts days with a quote too; for Rolling Beta, days on which both assets were quoted.

Not every indicator can run on every asset

ADX, Aroon, ATR, NATR, CCI, Donchian Channels and MFI need high and low prices; OBV and MFI need the volume. Without them, the card tells you which data is missing.

📉 Drawdown over the full history

Drawdown signal card with the full-history toggle

The Underwater Drawdown card has a Full history checkbox, on by default: the drop is measured from the highest price of the asset's whole history, even years before the dates on screen. Untick it for a quicker view, measured from the highest price within the dates on screen.

💱 Compare with an asset or a currency pair

The Data Comparison menu adds:

Asset Comparison — another asset on the same chart, such as a stock against its index ETF. In % view both lines start at 0 %.
FX Pair — the rate of one of your currency pairs.

Sync (🔄) on an Asset Comparison card downloads that asset's prices for the chart's dates, together with the exchange rates that convert it, for pairs that exist. When the pair is missing, an amber ⚠️ on the card creates it; when its rates are missing, an amber 🔄 syncs them.

In Rolling Return mode only Asset Comparison stays: each compared asset becomes a rolling return, with the same window and currency. The other signals are hidden, not deleted, and come back in Prices mode.

📐 Synthetic benchmarks

Reference curves drawn from their parameters alone, with no market data:

Linear Growth — \(y(t) = y_0\,(1 + r\,t)\)
Compound Growth — \(y(t) = y_0\,(1 + r)^t\)
Sine Wave — \(y(t) = A \sin(2\pi t / T) + y_0\)

🩺 Read a signal card

A spinner turns while the signal is computed.
📈 N is the number of price points loaded.
A grey ℹ — computed, with a small caveat: a short gap or a nearly complete warm-up. Hover the icon for the details.
An amber ⚠ — computed, with a caveat worth a look: larger gaps, an incomplete warm-up, or data that starts after the first date on screen. The card turns amber too.
A red ⚠ — not computed: a missing price field, too little history for the parameters, no data at all, or a calculation error. The card turns red.

🧩 Patchy price history — when a signal is partial

ADX, Aroon, ATR, NATR, CCI, Donchian Channels, MFI and OBV can run on a patchy history: they use the most recent stretch without gaps that is long enough, and the tooltip names that stretch and how many points were left out. The other indicators need a history without gaps, and explain why they cannot run rather than draw a misleading line. A weekend or a market holiday is not a gap.

📚 Technical Indicators — Every indicator's formula and how to read it
⚠️ Risk Metrics — The metrics behind the risk signals
🧠 Asset AI Export — Technical indicators computed by the same backend, exported for an AI assistant
🛠️ Signal Plugin Guide — For developers: how indicators are computed, checked and added