NEW YORK – The Vanguard Morningstar Total Stock Market ETF (VTI) climbed 2.0% on Tuesday, reaching $381.15 in afternoon trading, as a broad-based rally in technology and semiconductor stocks lifted the entire market. The advance came despite a mixed session for other sectors, with seven of eleven S&P 500 sectors posting declines.
Advanced Micro Devices (AMD) surged 9.0% to $528.32 ahead of its quarterly earnings report, scheduled for release after Tuesday's market close. However, early attribution analysis suggests that AMD's contribution to VTI's performance was relatively modest, accounting for only about 6% of the fund's prior 1.5% gain. According to Quiver Quantitative's data, AMD's implied contribution was 0.094 percentage points.
Instead, other technology names played a more significant role. Broadcom (AVGO) delivered the highest estimated contribution among the fund's holdings, adding 0.177 points, followed by Nvidia (NVDA) at 0.134 points, Palantir (PLTR) at 0.129 points, and Micron (MU) at 0.116 points. These six companies—including Microsoft (MSFT) at 0.092 points—collectively accounted for roughly 49% of VTI's 1.5% gain.
The broad market participated in the rally, with the SPDR S&P 500 ETF (SPY) and the iShares Russell 2000 ETF (IWM) both advancing 1.89%. The tech-heavy Invesco QQQ Trust (QQQ) outperformed, gaining 3.39%, and led VTI by approximately 1.43 percentage points. This divergence underscores the dominant role of technology in driving market returns, even within a total-market fund.
VTI's performance also broke through a key technical level. Stock Traders Daily had identified $377.20 as a breakout trigger, and the fund's price action surpassed this threshold, now trading 1.0% above it. The next target is $384.74, with VTI currently about 0.9% below that level. Technical indicators suggest a neutral near-term and mid-term outlook, while the long-term assessment remains strong.
The rally was fueled by continued enthusiasm for artificial intelligence. The Philadelphia Semiconductor Index climbed approximately 5.8% on the day, and the S&P technology sector advanced 3.5%. Market breadth was positive, with advancing stocks outnumbering decliners by more than two to one on both major exchanges.
"The AI earnings performance has been fantastic," said Eric Parnell, chief market strategist at Great Valley Advisor Group. He advised investors to differentiate between companies with durable competitive advantages and those that may be less resilient.
VTI's broad diversification, however, masks a significant concentration in technology. As of May 31, technology accounted for 42.3% of the fund's assets, with major holdings including Nvidia, Apple, Microsoft, and Broadcom. This heavy weighting means that swings in tech stocks can disproportionately influence the fund's performance.
Looking ahead, AMD's earnings report will be closely watched. A strong result could extend the semiconductor rally, while a disappointment might prompt a pullback. The technical breakout in VTI adds another layer of significance, but analysts caution that technical indicators can quickly become outdated during earnings season.
