Markets
An $11.16 million presale and a $1 million Bitcoin call: what the press release actually establishes
The numbers in the Pepeto announcement are real claims from a real source. That is not the same as verified evidence.
October 3, 2026
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Latest News
Economy
Inflation Explained: What It Is and Why It Bit
A plain-language look at how rising prices are measured, what pushed them up after 2021, and why a little inflation is considered healthy.
September 22, 2026
Markets
A presale press release, read closely: what Apeing's Stage 6 numbers do and don't establish
The wire copy sells timing and a 1,500% ROI. The arithmetic inside it tells a more cautious story.
October 1, 2026
Markets
Markets
What a stock's short interest ratio actually tells you
Days-to-cover is a snapshot built from twice-monthly data. It measures exit difficulty, not destiny.
September 13, 2026
Markets
What is 'probability of backtest overfitting,' and how is it actually measured?
A diagnostic built to answer one question a good Sharpe ratio can't: how much of a backtested strategy's performance is signal, and how much is the number of…
August 15, 2026
Markets
Anatomy of a bid-ask spread: where the pennies go
A spread decomposes into processing cost, inventory risk and adverse selection — and each component behaves differently when markets speed up.
July 23, 2026
Investing
Investing
A high backtest Sharpe ratio proves little: what real validation requires
Reported Sharpe ratios inflate with every unreported trial, and the corrections that account for this are arithmetic, not opinion.
August 28, 2026
Investing
How many signals were tested before this one worked?
Multiple testing turns luck into apparent skill. What the correction procedures control, the hurdles the replication literature settled on, and what a corrected…
August 21, 2026
Economy
Economy
The Backtest Trap: Why a Great Historical Track Record Doesn't Prove a Forecasting Model Works
AI-driven trading and forecasting tools are often sold on the strength of impressive backtested results. Here is the mechanism by which those results can be…
August 12, 2026
Economy
BEA's first read on Q2 2026: real GDP grew 1.5 percent
The advance estimate prints 1.5 percent annualized growth after 1.6 percent in Q1 — and by design it is an estimate of an estimate.
August 1, 2026
Analysis
Analysis
What does out-of-sample mean in a forecasting paper?
Out-of-sample scoring is the only published test that approximates live trading, and most papers still manage to overstate it.
August 26, 2026
Analysis
What replaced the guidance that has governed bank models since 2011?
Federal regulators rewrote model risk management guidance in April 2026, keeping the same validation core built around conceptual soundness and outcomes…
August 19, 2026
Finance News
Finance News
SEC settles its first AI-washing cases for a combined $400,000
Two advisers paid penalties in March 2024 for overstating their use of machine learning, and the orders turn on the gap between claimed and actual model use.
August 24, 2026
Finance News
Every backtest is one of many: what the trial count does to measured performance
Ten trials are enough to yield an in-sample Sharpe ratio of 1.57 from strategies with zero expected out-of-sample performance. What validation, multiple-testing…
August 17, 2026
Don't Miss
Finance News
SEC draft strategic plan elevates digital assets to a stated priority
The FY2026-2030 plan published June 2, 2026 names digital-asset rulemaking among the agency's top priorities — a planning document, with a planning document's…
June 3, 2026
Economy
Why the unemployment rate and payrolls can tell opposite stories
One number comes from a survey of households, the other from a survey of establishments — different frames, different failure modes.
March 17, 2026
Investing
What does factor investing actually measure?
A factor is a return pattern defined by a sorting procedure — and the procedure, not the story, is what gets tested.
January 4, 2026
Markets
What does dealer gamma exposure measure, and what doesn't it?
GEX estimates aggregate into one number rest on three assumptions each worth checking before the number is quoted.
April 23, 2026