Astera Labs, Inc. (NASDAQ:ALAB) stock is trading lower on Monday due to a combination of profit-taking, high-profile insider stock liquidations, and recent index rebalancing adjustments.

Despite the single-day drop, the stock remains up 113.29% year to date. The Nasdaq is down 1.74% while the S&P 500 has shed 0.68%.

Global Risk-Off Sentiment Weighs On Chip Stocks

Fabless semiconductor stocks came under pressure after weakness in South Korea, where declines in Samsung Electronics and SK Hynix weighed on the KOSPI index and spilled over into U.S. chip names.

Investor sentiment also turned cautious after the U.S. launched another round of strikes against Iran late Sunday. The escalation pushed crude oil prices higher and weighed on equity futures.

Meanwhile, the U.S. Central Command said the Iranian government no longer had control over the Strait of Hormuz, raising concerns about potential disruptions to global energy supplies and higher costs for the semiconductor industry.

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SEC Filings Detail Liquidations

According to U.S. Securities and Exchange Commission filings, Board Chairman Manuel Alba and Director Stefan Dyckerhoff executed multi-million dollar stock liquidations. The automated divestments occurred pursuant to a Rule 10b5-1 trading plan.

Alba sold 173,366 total shares across multiple tranches, including 8,490 shares at $458.38, 37,530 shares at $447.39, and 136,970 shares at $442.01, representing reductions in his respective holdings. Dyckerhoff divested 12,500 shares at $450.

Rebalancing and Sector Rotations

The decline follows recent volatility tied to the Nasdaq-100 index quarterly reconstitution, which added the company to the index effective June 22.

While passive funds generated buying pressure leading up to the inclusion, recent trading sessions reflect broader index rebalancing adjustments.

Concurrently, market participants are rotating capital out of high-momentum growth names and into defensive sectors such as Health Care and Utilities.

Technical Picture Weakens

The stock has pulled 12.8% below its 20-day simple moving average of $405.34, signaling that short-term momentum has shifted in favor of sellers.

However, the longer-term trend remains intact. Astera Labs still trades 7.7% above its 50-day simple moving average of $328.34 and well above its 200-day simple moving average of $200.39. The golden cross formed in May also remains in place.

The relative strength index stands at 46.04, indicating neutral momentum. That suggests the stock has cooled from June’s overbought conditions but has not yet reached oversold territory.

Immediate resistance sits near $372.50, while key support is around $303.00 if selling pressure continues.

ALAB Stock Price Activity: Astera Labs shares were down 13.45% at $399.00 at the time of publication on Monday, according to Benzinga Pro data.

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