Active managers are struggling against the S&P 500 not just from bad picks, but because the market is dominated by a few AI stocks they can't fully concentrate in. Many also became too defensive during April's volatility, causing them to miss the subsequent sharp market rebound.

Fund managers are like zebras. Those in the middle (owning popular stocks) are safe from predators (getting fired), even if performance is mediocre. Those on the outside (owning unfamiliar stocks) find better grass (higher returns) but risk being the first ones eaten if an idea fails. This creates an institutional imperative to stay with the consensus.

Grantham explains a psychological asymmetry: losing money alongside everyone else in a crash is acceptable. However, underperforming while peers are succeeding in a bull market creates intense career risk, leading to managers being fired instantly.

Conventional wisdom blames high fees and a "paradox of skill" for active management's failure. However, fees are at historic lows and increased manager skill should theoretically reduce market volatility. The fact that managers are performing worse despite these tailwinds indicates a deeper, structural market shift is the true cause.

An estimated 80-90% of institutional trading is driven by quant funds and multi-manager platforms with one-to-three-month incentive cycles. This structure forces a short-term view, creating massive earnings volatility. This presents a structural advantage for long-term investors who can underwrite through the noise and exploit the resulting mispricings caused by career-risk-averse managers.

Professional fund managers are often constrained by the need to hug their benchmark index to avoid short-term underperformance and retain clients. Individuals, free from this 'career risk,' can make truly long-term, contrarian bets, which is a significant structural advantage for outperformance.

Short-term performance pressure forces fund managers to sell underperforming stocks, creating a self-fulfilling prophecy of price declines. Investors with permanent capital have a structural advantage, as they can hold through this volatility and even buy into the weakness created by others' behavioral constraints.

Managers of closed-end funds are often indifferent to their funds trading at a significant discount to Net Asset Value (NAV). They are paid on NAV and the structure provides permanent capital with no redemption pressure, creating a principal-agent problem where the manager's interests diverge from the investor's.

In the market swarm, underperformance relative to a benchmark leads to client calls and redemptions. This pressure acts like 'bites from behind' in a locust swarm, forcing managers who are underweight a hot sector to capitulate and join the herd to avoid losing assets.