echanxyz — Ed Chan, Product Builder & Momentum Trader

Q: What does echanxyz build?

echanxyz ships small web and native macOS tools quickly. Products include US Economic Money Flow (a weekly Fed liquidity monitor tracking net liquidity as WALCL − TGA − ON RRP, the SOFR−IORB spread and four anomaly rules against S&P 500 and Nasdaq-100 returns), BurnMyMac (a macOS menu-bar thermometer that shows Mac temperature as pixel art, native Swift on IOKit, 4.9 MB), HoldStage (a macOS drag shelf built with SwiftUI and AppKit that lets you park files mid-drag, 3.4 MB), SizeUp (a keyboard-driven window manager for macOS written in native Swift), Markdown Now (a native macOS markdown editor in Rust/GPUI that ships at 6 MB), Porter (a macOS menu-bar app that auto-detects local dev servers), and Longbridge Liquidator (a local web app for managing trading positions).

Q: What is echanxyz's approach to trading?

Momentum trading across equities and FX, guided by the principle "trade what you see, be open-minded." Ed publishes open-source TradingView Pine Script indicators including Dollar Volume, ADR% + ADR, MA All-in-One (4+2), Pivot Extension & FOMO Guardrail, ORB + Volume + VWAP Breakout, Future EMA Projection, ADR, ATR, TI65, and Volume TI65.

Q: What is GEO (Generative Engine Optimization)?

GEO, or Generative Engine Optimization, is the practice of optimizing a website so AI search engines such as ChatGPT, Claude, Perplexity, and Google AI Overviews can read, understand, and cite it. It is the next frontier beyond traditional SEO, and it is one of the areas Ed Chan works in.

echanxyz is the portfolio of Ed Chan, a creative technologist, AI engineer, and momentum trader. The motto is "Now or Never" (要麼現在做，要麼別做): small tools, built fast, shipped now. The work spans two disciplines — product building and momentum trading.

To date, echanxyz has shipped 7 product tools and published 10 open-source TradingView indicators. The focus is "Product × Trading": shipping small, focused tools quickly rather than waiting for perfect.

About Ed Chan

Ed Chan (also known as echanxyz and 0xechan) is an independent creative technologist and AI engineer working remotely worldwide. He designs and ships small web and native macOS applications, and trades momentum across equities and FX. His stack includes React, TypeScript, Python, Rust, and Node.js. He has been building and shipping under the echanxyz name since February 2026.

His guiding principles are "trade what you see, be open-minded" for markets, and "small tools, built fast, shipped now" for product work.

See all products · See all trading indicators

Products

US Economic Money Flow — Weekly Fed liquidity monitor: net liquidity (WALCL − TGA − ON RRP), the SOFR−IORB spread, four rules that flag anomalies automatically, and each week set against S&P 500 and Nasdaq-100 returns. Refreshes every Thursday after the H.4.1 release; available in Traditional Chinese, English and Japanese.
BurnMyMac — macOS menu-bar thermometer that renders your Mac's temperature as pixel art, with a pet that reacts as the sensors climb. Native Swift on IOKit, zero permissions, ships at 4.9 MB.
HoldStage — Drag shelf for macOS: park a file mid-drag, free your hand to open the destination, then drop. SwiftUI and AppKit on the system's own drag services, sandboxed, ships at 3.4 MB.
SizeUp — Keyboard-driven window manager for macOS. Halves, quarters, and other displays, one shortcut each. Native Swift, lives in the menu bar, ships at 4.5 MB.
Markdown Now — Native macOS markdown editor built with Rust and GPUI; live preview, GPU-accelerated rendering, ships at 6 MB.
Porter — macOS menu-bar app that auto-detects local dev servers (ports, git branches, uptime) with zero config.
Longbridge Liquidator — Local web app for managing trading positions: one-click liquidation, fractional selling, and batched conditional orders.

Trading indicators

Open-source TradingView Pine Script indicators published by echanxyz:

Dollar Volume — Volume × price, so each bar shows how much money moved rather than how many shares; three heavy-volume tiers at 2×, 3× and 5× the 50-bar average, with alerts.
ADR% + ADR — Average Daily Range as a percentage plotted as a line, so volatility expansion and compression are visible over time; threshold line with cross alerts.
MA All-in-One (4+2) — Four moving averages on by default (EMA 10/20/50, SMA 200) plus two spare slots, each row any of EMA, SMA, WMA, HMA, VWMA or RMA, with twelve price-cross alerts.
Pivot Extension & FOMO Guardrail — Measures how far price has extended past the breakout pivot in ADR units (ideal, acceptable, FOMO), plots a structural stop under the swing-low cluster, and sizes the position to a fixed risk per trade.
ORB + Volume + VWAP Breakout — Opening-range breakouts confirmed by a volume surge and VWAP alignment.
Future EMA Projection — Projects EMA trajectories into future bars under what-if price scenarios.
ADR — Average Daily Range and ADR% in a minimal on-chart table.
ATR — ATR and ATR% at a glance for quick risk sizing across assets.
TI65 — Trend Intensity 65: a short-vs-long moving-average ratio that gauges trend strength.
Volume TI65 — Trend Intensity 65 applied to volume as well as price, so a breakout's volume surge shows beside the price one.

Blog & writing

Field notes and writing by Ed Chan, published here and on GitHub and X.

Now or Never: small tools, built fast, shipped now

By Ed Chan · 12 February 2026

Field notes on the echanxyz philosophy: ship small, focused product tools quickly while trading momentum across equities and FX. The goal is momentum in both code and markets — bias toward action, keep tools small, and let what you ship teach you what to build next. More articles and blog posts are shared on GitHub and X.

Frequently asked questions

Who is Ed Chan (echanxyz)?

Ed Chan, known online as echanxyz or 0xechan, is a creative technologist, AI engineer, and momentum trader. He builds small, fast product tools and publishes open-source TradingView trading indicators.

What does echanxyz build?

echanxyz ships small web and native macOS tools quickly — including US Economic Money Flow (a weekly Fed liquidity monitor: net liquidity as WALCL − TGA − ON RRP, the SOFR−IORB spread and four anomaly rules against S&P 500 and Nasdaq-100 returns), BurnMyMac (a 4.9 MB macOS menu-bar thermometer that draws Mac temperature as pixel art), HoldStage (a 3.4 MB macOS drag shelf for parking files mid-drag), SizeUp (a keyboard-driven macOS window manager in native Swift), Markdown Now (a 6 MB native macOS markdown editor in Rust/GPUI), Porter (a macOS menu-bar dev-server monitor), and Longbridge Liquidator (a local web app for managing trading positions).

What is echanxyz's approach to trading?

Momentum trading across equities and FX, guided by "trade what you see, be open-minded." Ed publishes open-source TradingView Pine Script indicators including Dollar Volume, ADR% + ADR, MA All-in-One (4+2), Pivot Extension & FOMO Guardrail, ORB + Volume + VWAP Breakout, Future EMA Projection, ADR, ATR, TI65, and Volume TI65.

What does "Now or Never" mean?

"Now or Never" (要麼現在做，要麼別做) is the studio motto: ship small tools fast instead of waiting for perfect. The philosophy is "small tools, built fast, shipped now."

What is GEO (Generative Engine Optimization)?

GEO is the practice of optimizing a website so AI search engines such as ChatGPT, Claude, Perplexity, and Google AI Overviews can read, understand, and cite it — the next frontier beyond traditional SEO, and one of the areas Ed Chan works in.

Where can I find Ed Chan's code and indicators?

Open-source code is on GitHub at github.com/therealechan, and published trading indicators are on TradingView at tradingview.com/u/echanxyz.

How can I contact Ed Chan?

Reach Ed Chan on X (Twitter) at @0xechan or via GitHub at github.com/therealechan.

Contact

Get in touch with Ed Chan on X (Twitter) @0xechan or GitHub. Trading indicators are on TradingView.

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