The crypto market is demonstrating an impressive shift in sentiment: the fear and greed index has made one of its sharpest jumps in recent months, surging 16 points in a single day — from 46 to 62. This is a confident move into the "greed" zone, marking the highest value in the last 30 days.

Growth drivers: bitcoin and altcoins

The main catalyst for this reversal was a powerful move by the leading cryptocurrency. Bitcoin (BTC) gained 11.7% in a day, reaching the $71,850 mark. This movement was instantly picked up by other major assets: Ethereum (ETH) showed growth of 19.6% to $2,285, Solana (SOL) strengthened by 13.25%, and XRP rose by 14.3%. Bitcoin's market capitalization meanwhile increased to $1.44 trillion.

It is worth noting that two key components of the index — volatility and market momentum, which together account for 50% of the weight in the calculation — sharply changed direction. These were the primary drivers of today's jump.

Short mechanics and liquidity

The sharp rise in prices triggered a cascade of short position liquidations. Traders betting on declines were forced to close their positions at a loss of around $1.23 billion, buying back assets at higher prices. This, in turn, fueled the upward momentum.

However, despite the optimism, this shift in sentiment should be approached with caution. Liquidity is not returning as quickly as market participants' emotions. Stablecoin reserves on exchanges have fallen by roughly 20%, indicating a reduction in available funds that could cushion a potential decline. Simply put, the safety cushion is getting thinner.

Context and structural signals

It is important to remember that just a week ago the index stood at 29, and a month ago at 25 — that is, in the "extreme fear" zone. Throughout July and early August, it barely rose above 35. Such a rapid transition from fear to greed is in itself a rare signal, often preceding either a continuation of the trend or its correction.

While sentiment indicators have sharply flipped polarity, structural metrics such as bitcoin dominance remain virtually unchanged. This suggests that institutional players are in no hurry to rotate into altcoins, and the debate over the start of an "altseason" remains open. For now, we are seeing a classic liquidation-driven rally rather than a steady influx of new money.

My take: Such index jumps are a mirror of emotions, not fundamental strength. Until we see a recovery in exchange stablecoin reserves, the current rise risks being local. The next 48 hours will be critical: if buyers hold the $71,000 level, the greed is justified; if not, fear will return just as quickly as it left.