The investing mistakes Wall Street veterans still think about

| News | February 11, 2026 | 5.46 Thousand views

TL;DR

Wall Street veterans share hard-learned investing lessons, emphasizing the importance of starting early with equities over bonds, maintaining discipline in profit-taking, and doing thorough research while avoiding emotional decision-making.

💸 Early Career Mistakes 3 insights

Bonds Over Stocks at 25 Was Stupid

John invested 65% of his portfolio in bonds at age 25-26 in 1979-1980, missing decades of equity growth despite bonds yielding 15-16% at the time.

Trading vs Long-Term Investing Clarity

Adam wasted years trying to be a trader before realizing he was better at fundamental analysis and long-term cash flow investing, which eliminated his stress.

Start Early and Stay Consistent

Even $50-100 monthly investments starting in your 20s-30s compound significantly over time through consistent equity exposure.

⚖️ Risk Management Principles 3 insights

Cut Losses When You Feel Wrong

John emphasizes getting out quickly when trades go against you rather than letting ego prevent admitting mistakes.

Position Sizing Is Critical

Adam limits positions to 2-4% of capital - 4% for large-cap names like Apple, 2% for speculative plays that could triple but might blow up.

Set Price Targets Before Buying

A mentor taught Adam to establish profit targets upfront and sell portions when reached, since investors are only rational before they buy.

📊 Research and Analysis Approach 3 insights

Do Your Own Work First

Adam runs his own analysis for hours before checking analyst consensus as a gut check, avoiding narrative-driven reporting.

Look Under the Hood of Headlines

Apparent 5% GDP growth is actually under 3% when accounting for trade deficits and inventory changes that analysts often ignore.

Macro Context Matters for Stock Picks

If consumer spending grows 5-6% but a company's sales grow 15-20%, that's a warning sign the growth isn't sustainable.

🎯 Portfolio Construction Strategy 3 insights

Diversification Beyond US Stocks

Include international exposure and some fixed income for defensive purposes, especially during potential recessions when bond yields could drop from 4.25% to 2%.

40+ Names for Active Management

Adam runs 44 positions in his growth portfolio, rejecting index funds in favor of active stock selection to consistently beat benchmarks.

Don't Let Business Cycles Dictate Trades

Avoid selling sound companies just because of recession fears - focus on company fundamentals rather than macro timing.

Bottom Line

Start investing early in equities with consistent small amounts, maintain strict position sizing (2-4% max per stock), and always do your own research before buying while setting profit targets upfront.

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