The sharp rebound in US equities late last week may have calmed nerves temporarily, but according to Goldman Sachs, the turbulence is far from over. After one of the most volatile stretches in months, traders at Goldman Sachs are cautioning clients that the apparent stabilization could prove fragile, as systematic selling pressure, thin liquidity, and shifting investor behavior continue to weigh on the market.

According to Bloomberg, Goldman Sachs’ trading desk believes trend-following algorithmic funds, particularly Commodity Trading Advisers (CTAs), are poised to remain net sellers of US equities in the coming days. This warning comes even after the S&P 500 staged a strong rebound on Friday, nearly erasing losses from a brutal mid-week slide.

The message from Goldman Sachs is clear: short-term rallies should not be mistaken for a durable bottom. Structural forces beneath the surface of the market are still pointing toward instability, making the coming weeks potentially uncomfortable for investors accustomed to buying every dip.

Goldman Sachs and the Mechanics of Systematic Selling

At the heart of Goldman Sachs’ warning is the role played by systematic strategies, particularly CTAs. These funds are not guided by earnings forecasts or macroeconomic narratives. Instead, they follow price trends, volatility signals, and predefined technical triggers.

According to Bloomberg, the S&P 500 has already breached a short-term threshold that historically prompts CTAs to reduce equity exposure. Once such triggers are hit, selling can become self-reinforcing, regardless of whether markets subsequently rebound or stagnate.

Goldman Sachs estimates that a renewed market decline could unleash around $33 billion of CTA-driven selling in a single week. More concerning, if the S&P 500 were to fall below the 6,707 level, the bank’s models suggest that as much as $80 billion in additional systematic selling could be unlocked over the next month.

Even in scenarios where markets move sideways or grind higher, Goldman Sachs does not expect these funds to turn into aggressive buyers. In a flat market, CTAs could still sell roughly $15.4 billion in US equities, while a modest rally might only reduce that figure to about $8.7 billion.

Volatility Signals Flashing Yellow

Goldman Sachs’ caution is reinforced by a sharp rise in stress indicators. According to Bloomberg, the firm’s proprietary Panic Index recently climbed to 9.22, a level suggesting markets are approaching what Goldman Sachs describes as “max fear.”

This index blends several measures, including one-month implied volatility on the S&P 500, VIX volatility, put-call skew, and the slope of the volatility term structure. Together, these components paint a picture of investor anxiety that remains elevated despite Friday’s rally.

Goldman Sachs traders note that such conditions often coincide with erratic price action rather than smooth recoveries. When fear remains high, liquidity tends to evaporate, amplifying both rallies and selloffs.

Historically, periods marked by elevated panic readings have not guaranteed immediate market bottoms. Instead, they often precede extended stretches of choppy trading, a scenario Goldman Sachs believes is now unfolding.

Thin Liquidity and the “Short Gamma” Problem

Beyond CTA selling, Goldman Sachs has highlighted a deterioration in market liquidity as a major concern. According to Bloomberg, top-of-book liquidity in the S&P 500 — the volume available at the best bid and ask — has fallen sharply to about $4.1 million, down from a year-to-date average near $13.7 million.

Such thin liquidity means that relatively small orders can have an outsized impact on prices. Goldman Sachs warns that this environment makes it difficult for markets to absorb shocks efficiently, leading to exaggerated intraday swings.

Compounding the issue is the shift in options dealer positioning. Dealers are now estimated to be flat to short gamma, a reversal from the long-gamma positioning that previously helped cap volatility and prevent a decisive break above the 7,000 level on the S&P 500.

“The inability to transfer risk quickly lends itself to a choppier intraday tape and delays stabilization in overall price action,” Goldman Sachs traders wrote, according to Bloomberg.

In short-gamma environments, dealers tend to sell into market declines and buy into rallies, a dynamic that can magnify price moves in both directions. Goldman Sachs believes this setup increases the risk of sudden, sharp swings that leave investors scrambling.

The AI Shock That Sparked the Selloff

The recent volatility did not emerge in a vacuum. According to Bloomberg, a sharp early-week decline in both the S&P 500 and the Nasdaq 100 was triggered by the launch of a new AI automation tool from Anthropic PBC.

The announcement sent shockwaves through software, financial services, and asset-management stocks, wiping billions of dollars off market capitalizations. Investors began reassessing disruption risks, particularly for companies whose business models depend on software pricing power or labor-intensive processes.

Goldman Sachs notes that this episode underscores how sensitive markets have become to technological shifts. AI developments are no longer viewed as distant possibilities; they are immediate catalysts capable of reshaping entire sectors overnight.

The rebound that followed, including a 2% surge in the S&P 500 on Friday, reflected short covering and tactical positioning rather than renewed confidence, according to Goldman Sachs’ interpretation.

Risk Parity and Volatility-Control Funds Still Have Room to Cut

While CTAs have drawn the most attention, Goldman Sachs warns that other systematic cohorts may also contribute to selling pressure if conditions worsen.

According to Bloomberg, risk-parity strategies currently sit in the 81st percentile of historical positioning, while volatility-control funds are around the 71st percentile. These strategies adjust exposure based on realized volatility rather than price trends.

This distinction matters. Unlike CTAs, which respond quickly to price movements, volatility-sensitive funds react more slowly. However, if volatility remains elevated or continues to rise, Goldman Sachs expects these funds to de-risk more aggressively.

Although S&P 500 realized volatility is climbing, Goldman Sachs notes that the 20-day measure remains below peaks seen in November and December. This suggests there is still room for volatility to increase, potentially triggering another wave of selling.

Seasonality Offers Little Comfort

Goldman Sachs also points to seasonality as a headwind. February has historically been a weaker and more volatile month for US equities, particularly after strong January inflows fade.

According to Bloomberg, supportive flows linked to retirement contributions and heightened retail activity tend to peak early in the year and then diminish. As these tailwinds subside, markets can become more vulnerable to negative shocks.

Goldman Sachs cautions that investors relying on seasonal patterns for reassurance may be disappointed. In an environment already characterized by thin liquidity and systematic selling, seasonal weakness could exacerbate existing pressures.

This seasonal backdrop reinforces Goldman Sachs’ broader message: the path forward is unlikely to be smooth.

Retail Investors Show Signs of Fatigue

Another notable shift highlighted by Goldman Sachs is a change in retail investor behavior. After a year dominated by relentless dip-buying, recent data suggest enthusiasm may be waning.

According to Bloomberg, the latest two-day net retail imbalance showed approximately $690 million of selling last week. This marks a departure from the aggressive buying that helped prop up markets during previous pullbacks.

Goldman Sachs notes that popular retail trades linked to cryptocurrencies and crypto-related equities have been hit particularly hard. This raises the risk that any broader rotation out of US stocks could gain momentum.

If retail investors, long a stabilizing force during downturns, become more cautious, Goldman Sachs believes volatility could increase further.

Goldman Sachs’ Message: “Buckle Up”

The tone from Goldman Sachs’ trading desk has been unusually blunt. According to Bloomberg, traders summed up their outlook with a simple warning: “Buckle up.”

This phrase captures the essence of Goldman Sachs’ view. Markets are entering a phase where traditional anchors — strong liquidity, supportive flows, and clear directional conviction — are less reliable.

Instead, price action is being driven by mechanical flows, options dynamics, and shifting sentiment. In such an environment, Goldman Sachs advises investors to focus less on predicting direction and more on managing risk.

The bank’s analysis suggests that even positive news may struggle to generate sustained rallies until systematic selling pressures abate.

Implications for Long-Term Investors

For long-term investors, Goldman Sachs’ warnings raise difficult questions. Is the current volatility a buying opportunity, or a sign of deeper instability?

Goldman Sachs does not explicitly forecast a bear market, but its analysis implies that patience may be required. Structural selling from systematic strategies can persist longer than discretionary investors expect.

According to Bloomberg, Goldman Sachs emphasizes that positioning, not fundamentals, is driving near-term price action. This disconnect can create opportunities, but only for those prepared to withstand volatility.

In the meantime, the bank suggests maintaining flexibility, avoiding excessive leverage, and being mindful of liquidity conditions.

Conclusion: Listening to Goldman Sachs’ Early Warning

Goldman Sachs has built its reputation on understanding market plumbing as much as macro narratives. Its latest warning reflects a deep concern about how today’s market structure amplifies stress.

According to Bloomberg, the combination of CTA selling, thin liquidity, short-gamma positioning, and fading retail support creates a fragile equilibrium. Friday’s rally, while impressive, has not resolved these underlying issues.

Whether markets stabilize or slide further, Goldman Sachs believes the journey will be volatile. For investors, the key takeaway is not panic, but preparation.

As Goldman Sachs’ traders have made clear, this is not a moment for complacency. The selling pressure may ease eventually, but until it does, caution remains the watchword.