Lay Quant's Substack

October 2025 Update and a Clever Monthly S&P Trading System

What happened in September? A lot of things, it seems.

Oct 1 • 

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September 2025

Trading Country-Themed ETFs

When it comes to trading foreign ETFs, my DAX/EWG debacle wasn't bad enough.

Sep 20 • 

Lay Quant

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September 2025 Update and Supplementing the FOMC trade

"I realized technical analysis didn't work when I turned the charts upside down and didn't get a different answer." - Warren Buffett

Sep 1 • 

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August 2025

The FOMC and Volatility Trading

“My father worked at a bank. They caught him stealing pens." - Rodney Dangerfield

Aug 17 • 

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2

August 2025 Update, and a Vibe-Ridden SPY Strategy

“If I had my way, I’d remove January from the calendar altogether and have an extra July instead.” – Roald Dahl

Aug 1 • 

Lay Quant

July 2025

A Four-Minute Trade on SPX

"You never realize how long a minute is until you get a on a treadmill." - Some AI slop I found when Googling about the Four Minute Mile.

Jul 21 • 

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1

Emergency QQQ ORB Strategy Update

So about that strategy I posted using QQQ options...

Jul 15 • 

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A July Update and Another Strategy Revisit

"One of my advisors will be an average five-year-old child. Any flaws in my plan that he is able to spot will be corrected before implementation." - The…

Jul 1 • 

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June 2025

ORBs, day trading, and trying to make sense of it all

"The haters said I couldn't do it.

Jun 21 • 

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Mistakes and a June 2025 Update

"I make mistakes. I'll be the second to admit it."

Jun 5 • 

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May 2025

A Simple Attempt to Trade EEM

"…The not-yellow ones?"

May 19 • 

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1

April 2025

I Call It "Volatility Reversion"

So, in the spirit of 'keep it simple', I have a strategy that uses 2 ETFs, trades long-only, and can be traded and backtested using publicly-available…

Apr 30 • 

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