Jeffrey Lin @JeffreyLin
⚡️Investor: Quant, Macro, VC, Movies :: IG: @jeffreylinla linkedin.com/in/jeffreylin/ Los Angeles Joined April 2008-
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Jeffrey Lin retweeted
Domain Expertise Has Always Been the Real Moat | Aaron Brethorst brethorsting.com/blog/2026/05/d…
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USE AI TACTICALLY Most people aren’t using AI effectively. AI is a tool, and like any tool, there are specific use cases where the tool is most effective. However, most people I see try to use it for everything, waste time, and get frustrated when they don’t get results.
Andrej Karpathy spent 4 minutes in an interview explaining a single idea about how most people haven’t even started learning how to use AI and everyone paying $20/month for a subscription.. that's not really using Claude at all his point is that the real skill gap is the
⚠️No #Claude were used in the making of this video
Technical specs for the quants: • Next-bar open execution (no lookahead) • IS/OOS degradation scores to test generalization • 1k+ Monte Carlo shuffles to kill path-dependency • Pyodide WASM sandbox for custom indicators • MCP server for Claude Desktop & full REST API
Backtesting usually lies. Most web tools overfit or ignore lookahead bias I built this #Backtest tool for my own systematic strategies validation: Walk-forward IS/OOS, Monte Carlo, & regime filtering in seconds Free, but need your feedback 👇 🔗 marketheist.io/backtest
Jeffrey Lin retweeted
MarketHeist is back. We've been quiet for a while — but we've been working. Here's our first update: a free #backtesting tool 🚀we use ourselves to vet systematic strategies. Walk-forward, Monte Carlo, no signup [marketheist.io/backtest/] — would love your feedback! More coming...
@Globalflows One of my fav bookmarked posts
@zerohedge Gold has been tracking China M2 in lockstep since 2022: x.com/heist22researc…
Gold is up 18% in 2025 and 36% over the past year, unaffected by tariffs or any other news. Since the Great Financial Crisis (GFC) in 2008, the price of Gold has moved eerily in lockstep with Japan's M2 Money supply [1st CHART] But in 2022, everything changed for Gold...
Jeffrey Lin retweeted
Gold is up 18% in 2025 and 36% over the past year, unaffected by tariffs or any other news. Since the Great Financial Crisis (GFC) in 2008, the price of Gold has moved eerily in lockstep with Japan's M2 Money supply [1st CHART] But in 2022, everything changed for Gold...
Starting to share my quantitative signals on Macro assets U.S. Dollar, Crude Oil, & Gold. Here's this week's update. No change this week. open.substack.com/pub/heist22/p/…
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