Heading into late October, the US stock market is entering one of the most information-dense stretches of the year. On one hand, the third-quarter earnings season has moved into its second half, with a number of heavyweight technology companies set to report results in quick succession over the next one to two weeks; on the other hand, the Federal Reserve's October policy meeting is approaching, putting the signaling value of the monetary policy path back in the spotlight. With the earnings and policy windows overlapping, market volatility is highly likely to rise systematically in the short term, and the market's rhythm will shift from the recent range-bound trading to an event-driven mode. For investors, rather than trying to guess whether any single trading day will end higher or lower, the better approach is to build in advance a framework for observing and acting amid uncertainty.
Super Earnings Week: The AI Narrative Enters Its Monetization Test
Late October has always been the center of gravity of the US earnings season. A considerable share of S&P 500 constituents release results around this window, and the highest market attention undoubtedly goes to a handful of large technology companies. This year, AI-related capital expenditure and commercialization progress have remained the core thread of market pricing, so the key question in this round of earnings is no longer whether companies are growing, but the quality, structure, and sustainability of that growth.
Three Key Dimensions for Interpreting the Results
- The match between AI revenue and capital expenditure: The market will closely examine whether revenue growth in cloud computing and AI-related businesses can keep pace with continuously rising capex; the trajectory of free cash flow will directly affect the market's tolerance for high valuations.
- Guidance quality outweighs current results: Judging from market reactions to companies that reported earlier this season, investors' sensitivity to guidance has risen markedly. It has become common for results to beat expectations while the stock responds blandly, suggesting that elevated valuation levels have partially priced in optimistic expectations.
- Management's capex commentary: With respect to AI infrastructure investment plans for 2027 and beyond, even a slight tweak in pacing could trigger a repricing of the industry's sustained boom; every change in wording deserves close, word-by-word scrutiny.
Notably, performance divergence among tech giants is widening. The valuation premium gap between companies benefiting from cloud demand and AI computing power business and those that have yet to find a clear monetization path keeps expanding. This means earnings week will not be a sector-wide rally in which everyone rises together, but a revaluation of the logic at the individual-stock level; investors need to drill their research down to the company level rather than simply betting on sector beta.
The Rate Decision Window Nears: Policy Wording Matters More Than the Decision Itself
The Federal Reserve will hold its regular policy meeting in late October. Unlike previous meetings, this one will, by convention, not be accompanied by the Summary of Economic Projections or the dot plot. As a result, the wording of the post-meeting press conference and any shifts in how the policy statement addresses inflation and employment will become the market's primary basis for reading the policy path—which further magnifies the challenge of interpreting the event day itself.
From a macro perspective, sticky inflation and a cooling labor market are forming a delicate balance: on one hand,
For US equities, the impact of the policy path is transmitted mainly through two channels: first, changes in the risk-free rate and discount rate, which act directly on the valuation anchor of growth stocks; second, dollar liquidity and global capital allocation, which shape overseas investors' marginal appetite for US risk assets. Before the rate decision is finalized, swings in US Treasury yields are expected to dominate index-level rhythm for a time, with tech growth stocks proving especially sensitive to rate changes.
Decoding Fund Behavior: Defensive Tilt and Structural Rotation in Tandem
Historical experience shows that as a major event window approaches, fund behavior typically exhibits two traits: first, implied volatility in the options market rises, with hedging demand and directional speculation expanding in tandem, and the single-day swings priced into single-stock options widen noticeably; second, before the uncertainty is resolved, some capital will temporarily tilt toward defensive sectors with stable cash flows and clear dividend returns—healthcare, utilities, and consumer staples have historically been the top picks for such funds.
Meanwhile, sectors sensitive to macro demand, such as energy and materials, largely reflect the tug-of-war between inflation expectations and growth expectations, with their performance closely tied to commodity prices and the inventory cycle. For portfolio managers, sector allocation during the event window is less about chasing a single strong theme and more about controlling the portfolio's exposure to any single risk factor, so as to avoid being forced into distressed selling when volatility spikes.
A Response Framework: Turning Forecasts into Contingency Plans
Four Practical Tips for the Event Window
- Control position concentration: Avoid placing heavy bets in a single direction ahead of a company's earnings release; index instruments or diversified holdings can help dilute single-stock event risk—sacrifice some upside elasticity if necessary, but protect your margin for error.
- Scale in batches and pyramid-style: Break your planned position into multiple tranches and let time do the work, reducing reliance on a single point-in-time call; confirmation signals after the event lands are often more reliable than pre-event forecasts.
- Beware of after-hours and pre-market gaps: Most major earnings are released outside regular trading hours, and intraday stop-loss orders cannot cover overnight gap risk—reserve a buffer in your position sizing, and never go into the event fully invested.
- Pre-set two-way response paths: Draft plans for adding or reducing positions and for taking profits or cutting losses across three scenarios—better than expected, in line with expectations, and worse than expected. Let discipline replace in-the-moment emotions, and turn volatility into an opportunity to execute your plan.
It is worth emphasizing that in event-driven markets, the biggest enemy is not getting the direction wrong, but impulsive, emotion-driven trading amid violent swings. For most non-professional investors, lowering trading frequency and lengthening the observation period often does more to improve long-term win rates than frequent speculation.
Closing Thoughts: Once Uncertainty Is Resolved, Repricing Begins
The high volatility stemming from the dual window of earnings season and rate decisions is both a risk and an opportunity. For medium- to long-term investors, the market's reaction after an event has played out is often more informative than the event itself. The varying elasticity of stock prices to positive and negative news can help identify the true preferences of capital and the direction in which valuation anchors are shifting. With the AI industry trend unchanged and corporate earnings still resilient, short-term volatility is more likely to create structural opportunities than a trend reversal. Maintaining flexible positions, focusing on earnings quality, and relying on contingency plans rather than predictions may prove to be the key to navigating this stretch of high volatility. The SGX US Equity Think Tank will also continue to track earnings disclosures and policy developments, providing investors with timely market analysis and strategy support.
