The Warning Signs Nobody Wants to Hear

The rally looks great on a ticker. But underneath the surface, two major red flags just went up simultaneously.

Bank of America Securities published a fund manager survey showing aggregate cash levels have dropped to 3.9% of portfolios, down from 4.3%. According to Bank of America, any reading below 4.0% triggers their formal sell signal.

What That Signal Actually Means

Michael Hartnett, investment strategist at Bank of America Securities, wrote on Tuesday: "Bull capitulation almost complete. Early June ripe for profit-taking, bond yields to determine degree of pullback."

Hartnett has reviewed 24 instances of this sell signal going back to 2011. The median 4-week loss after the signal fires: 1%. The worst loss in that window: 29%. The best gain: only 4%.

Low cash reserves mean traders chasing this rally are nearly out of dry powder. When the music stops, there's no cushion. The same fund managers who piled in last will be the first ones forced to sell into a falling market.

According to Bank of America's survey, virtually all money managers are bullish on global economic growth, and only 4% anticipate a hard landing. When nearly everyone agrees on something in markets, that's usually when the floor drops out.

Burry Steps In With a Louder Warning

Michael Burry — the investor who predicted the 2008 housing crash and was profiled in "The Big Short" — dropped a Substack post Monday evening that deserves serious attention.

Burry isn't just warning abstractly. He's putting money behind his thesis while flagging the bubble.

He added to positions in MercadoLibre (mid-$1,500 range), Adobe, PayPal, and Zoetis, and built a full-sized stake in Lululemon. His logic: these are quality companies being ignored because capital is flooding into AI trades instead.

"These stocks are part of the mass whale fall happening away from the main spectacle," Burry wrote. "In 1999 this happened too. The old economy and international stuff just got ditched in favor of the All-American bubble."

He's not being subtle about the comparison.

The Dot-Com Data Is Damning

Burry cited data from Torsten Slok, chief economist at Apollo, and the numbers are striking.

• 87% of venture capital funding is now directed toward AI-related companies
• AI-linked borrowers account for nearly half of investment-grade bond issuance
• AI-linked borrowers represent roughly 38% of high-yield debt issuance

For context: more than $100 billion of investment-grade debt issued during the 1999-2000 tech boom was eventually downgraded to junk within a few years of the crash.

"It is just an asset bubble, plain and simple," Burry said. "Debt issuance always starts out clean. That's how it gets sold."

He has specifically warned that the current environment feels like "the last months of the 1999-2000 bubble" and urged investors to reduce positions in any stocks going parabolic — "almost entirely."

What Individual Investors Are Actually Doing

The AAII Investor Sentiment Survey — which has tracked individual investor psychology weekly since 1987 — shows a notable shift in the week ending May 13, 2026.

Bullish sentiment ticked up to 39.3%, above the historical average of 37.5% for the fourth consecutive week. Neutral sentiment dropped sharply to 24.1% from 28.7% the prior week. Bearish sentiment rose to 36.6%.

Individual investors are getting more committed to their positions — both bulls and bears — while the fence-sitters are disappearing. That kind of conviction, combined with the fund manager cash signal, suggests increased volatility ahead.

The 1-year bearish high hit 52.0% the week ending March 18, 2026. The rebound since then has been sharp. Fast rebounds from fear extremes can overshoot.

What Mainstream Financial Media Is Getting Wrong

Most coverage is framing the cash-to-stocks rotation as a sign of confidence. It is a sign of late-cycle FOMO.

CNBC's own reporting notes the S&P 500 has surged roughly 19% from March lows and crossed 7,500 for the first time ever, fueled by AI optimism and Magnificent Seven momentum. But the same report buries the risk: 30-year Treasury yields are above 5.18%, the highest since 2007. Oil prices remain elevated.

High yields + high oil + stretched equity valuations + record-low cash buffers = a market with no safety net.

The financial press loves a bull run story. Burry and Hartnett are getting coverage, but the data — showing a median downside from a triggered sell signal of a loss, with a worst case of 29% — warrants more urgency.

What This Means for Regular People

If you have money in the market right now — especially in AI-adjacent names — you are not diversified just because you own multiple AI stocks.

Burry's move is instructive: he's buying what's been left behind, not chasing what's already run. Hartnett is saying the rally's fuel is burned up. The AAII data shows individual investors leaning bullish for four straight weeks above the historical average.

History says that's exactly when markets punch you in the face.

The rally may keep running. But the data says the risk-reward has flipped. Ignoring that because the market went up yesterday is how regular people get wiped out.