Before the market crash, key indicators showed hedge funds' gross exposure (the total value of long and short positions) was at historic highs. This extreme leverage meant that any catalyst forcing de-risking would inevitably trigger a large, cascading deleveraging event, regardless of the initial narrative.

Today's market structure, dominated by High-Frequency Trading (HFT) firms, is inherently fragile. HFTs provide liquidity during calm periods but are incentivized to withdraw it during stress, creating "liquidity voids." This amplifies price dislocations and increases systemic risk, making large-cap concentration more dangerous than it appears.

The current market shows extreme dispersion, with different indices peaking on different days. This indicates an insufficient liquidity regime where there isn't enough capital to support a broad rally, forcing liquidity to rotate between specific pockets and increasing market vulnerability.

According to Andrew Ross Sorkin, while bad actors and speculation are always present, the single element that transforms a market downturn into a systemic financial crisis is excessive leverage. Without it, the system can absorb shocks; with it, a domino effect is inevitable, making guardrails against leverage paramount.

Contrary to popular belief, the 1929 crash wasn't an instantaneous event. It took a full year for public confidence to erode and for the new reality to set in. This illustrates that markets can absorb financial shocks, but they cannot withstand a sustained, spiraling loss of confidence.

Investors try to apply lessons from past market cycles, but this collective awareness changes their behavior. This creates a self-reinforcing loop that alters timelines and dynamics, ensuring history only rhymes, not repeats.

In today's hyper-financialized economy, central banks no longer need to actually buy assets to stop a crisis. The mere announcement of their willingness to act, like the Fed's 2020 corporate bond facility, is enough to restore market confidence as traders front-run the intervention.

Contrary to intuition, widespread fear and discussion of a market bubble often precede a final, insane surge upward. The real crash tends to happen later, when the consensus shifts to believing in a 'new economic model.' This highlights a key psychological dynamic of market cycles where peak anxiety doesn't signal an immediate top.

Rapid, massive price swings in crypto are often caused by the liquidation of highly leveraged perpetual futures ("perps"). When many leveraged short positions are wiped out, it forces a cascade of buying that creates an artificial price spike, a dynamic less about market belief and more about financial mechanics.