RoastMyPortfolio Blog

Insights on portfolio analysis, investment mistakes, and the technology behind brutally honest financial critiques.

Filtering by:#investment-mistakes(5 articles)

Yacht labeled '60/40 Portfolio' drifting toward rocks marked 'Market Crash' with 82/18 allocation shown

Investment Mistakes

Portfolio Drift: Your 60/40 Became 82/18

A 60/40 portfolio drifted to 82/18 by 2022, costing $55K on $500K. Use our free calculator to check your own drift and get a rebalancing plan in seconds.

Jan 15, 20267 min read

#investment-mistakes #rebalancing #portfolio-drift

$810,139 lost to investment fees over 30 years: dramatic split-screen comparison

Investment Mistakes

Investment Fees Cost $810K Over 30 Years

A 1% fee costs $314K over 30 years on $100K. See your exact fee drag, compare funds to low-cost alternatives, and find what's silently draining your returns.

Dec 4, 20258 min read

#investment-mistakes #fees #expense-ratio

Chart showing high correlation between seemingly diverse tech stocks

Investment Mistakes

Diversification Illusion: The $15,514 Cost of Fake Diversification

You own 10 stocks and still have one bet. How to spot fake diversification, hidden correlation, and the tech-heavy echo chamber most portfolios fall into.

Nov 20, 202511 min read

#investment-mistakes #diversification #correlation

Chasing Yesterday's Winners - swirling vortex of stock percentages

Investment Mistakes

Performance Chasing Costs $850K: The Vanguard Behavior Gap

Vanguard research: investors chasing hot sectors underperform by 1.55% annually. On $250K over 25 years, that's $850K lost. Four rules to stop the bleed.

Nov 13, 202514 min read

#investment-mistakes #performance-chasing #recency-bias

Hand hovering over red panic sell button with $228,629 price tag showing cost of missing best market days

Investment Mistakes

Why Missing 10 Best Days Costs You $228K

Missing just 10 best days from 2000-2024 costs $228,629. Learn why market timing fails and how 6 of 10 best days occur within weeks of worst days.

Nov 6, 202512 min read

#investment-mistakes #market-timing #panic-selling

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