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Mosaic Quarterly Review and Outlook
Market Recap – Second Quarter 2026
Change happens fast. Three months ago, the market outlook appeared ominous. Oil was over $100 a barrel, Operation Epic Fury had already lasted much longer than most anticipated, the S&P 500 Index was down -4.3% to start the year, and pundits were predicting doom if the Strait of Hormuz remained closed beyond a few more weeks. Then, the announcement of a two-week ceasefire starting April 8th sent markets into full-on rally mode. It didn’t matter that the Strait would remain effectively closed through most of June, or that more attacks would come and go; markets moved on, oil dropped, and stocks ripped.
The S&P 500 returned an astonishing +15.2% in the second quarter, even more impressive given the index lost -1% in the month of June, to stand at +10.2% for the year by the end of the 2nd quarter. AI, momentum, and technology moved back into the driver’s seat for the quarter, with the S&P 500 Momentum index up +44% and the Information Technology sector up +32%. The biggest returns within Momentum and Technology during the quarter were seen in the AI spending beneficiaries, or “check cashers”, the companies that provide all the semiconductors and hardware compute equipment that goes into a data center. The term “compute shortage” became ubiquitous by May, and many of the impacted stocks saw quarterly gains of over 150%. Whereas the hyperscalers, or “check writers”, whose aggregate expected capital expenditures for 2026 have eclipsed $750 billion, have languished year-to-date.
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2Q 2026 Review and Outlook
The compute phenomenon wasn’t restricted to just the US market. The MSCI Emerging Markets Index surpassed the S&P 500 Index by a wide margin, gaining +24.1% for the quarter, boosted by compute stocks in Korea (MSCI Korea Index +88%) and Taiwan (MSCI Taiwan Index +49%). Much has been made of the S&P 500 Index’s market concentration, where the top 10 holdings have approached 40% of the index; however, this dynamic is no longer unique to the U.S. stock market. Post this quarter’s rally, the top three holdings of the MSCI Emerging Market Index sit near 30% of total capitalization. The developed international markets also had a fantastic quarter, with the MSCI EAFE Index up +10.8%.
Interest rates pushed higher over the quarter as investors continued pricing in the possibility of interest rate hikes later in the year. Kevin Warsh presided over his first meeting as Chair of the Federal Reserve in June. He made it abundantly clear during his press conference that the Fed intends to achieve their 2% price stability target, forward guidance is a thing of the past, and that the Fed will be scrutinizing all its various data sources and how they are used to formulate policy decisions moving forward. Coupon income was offset by the increase in yields, resulting in a +0.7% 2Q return for the Bloomberg US Aggregate Bond Index. Given the risk-on dynamic, corporate bonds outperformed both US Treasuries and mortgage-backed securities.
Outlook
It certainly appears that both sides would like to see a permanent resolution to this year’s hostilities. However, many questions remain as the United States and Iran work toward cementing June’s memorandum of understanding, as each side seems to have their own interpretation of pieces of the agreement. While we allow for the possibility that a hot war could be rekindled, it is not our base case.
Instead, we believe it’s more likely that the markets will continue to focus on the positives that were in place before the war: a stable labor market, an ongoing upswing in manufacturing, the continued tailwind of heavy AI spending, outsized fiscal support, and even stronger earnings growth emanating from corporate America. The last point is crucial as it’s helped keep valuations in check despite the steady rise in stock prices during the quarter. Typically, earnings growth estimates decline throughout the year as analysts revise their previously optimistic expectations lower. Instead, we’ve seen steady upward revisions taking 2026 full-year expectations to 24% from 15% on 12/31/2025.
Further, it’s not just large cap tech stocks seeing higher earnings revisions, small cap stocks (S&P Small Cap 600 Index) have seen a markup for 2026 growth estimates from 16% to 21% since the start of the year. The S&P Mid Cap 400 Index has seen its 2026 projection move up to 22%. Small and mid cap stocks are more sensitive to interest rates and the domestic economy, so we find both the increased earnings estimates and year-to-date outperformance over large caps (S&P Mid Cap 400 Index +17.3% and S&P Small Cap 600 Index +23.9% vs. the S&P 500 Index at 10.2%) especially encouraging. As markets continue to broaden out, diversification is once again enhancing portfolio returns after being deadweight for much of the past several years.
Although the factors above create a positive backdrop, we’d be remiss not to address the remaining risks to the outlook. Inflation is a problem, not just its reacceleration this year, but the cumulative price change since pre-COVID. Consumer prices growing by 4.2% year-over-year (May’s CPI figure) is disheartening for consumers, but the 29% cumulative rise in prices since February 2020 is downright depressing, and this is clearly behind the dour state of consumer confidence. Yes, spending continues to appear buoyant, but spending is reported in nominal terms, adjusting for inflation shows consumers have largely been paying more for the same amount of goods and services. The labor market is stable, but also relatively stagnant. It’s a low-hire, low-fire economy, leaving the jobs picture tenuous. A turn in the labor market would undoubtedly hit consumer spending and weaken our economic footing.
The composition of economic growth has also become a concern as nonresidential fixed investment (read AI datacenter buildout spending) has overtaken consumer consumption as the biggest driver of growth. So, the economy and markets have become increasingly levered to AI spending at the same time the market has punished several of the spendthrift hyperscalers. A pullback in capital expenditures would likely induce market and economic volatility.
Increased equity issuance is another cautionary sign. June brought us history’s largest initial public offering (IPO) with SpaceX raising $75 billion, simply remarkable, especially on the heels of Alphabet issuing $85 billion in new equity the week prior. Anthropic and OpenAI wait in the wings with anticipated IPO valuations close to $1 trillion each.
Putting it all together, we see the positives outweighing the potential risks and remain fully allocated to stocks relative to neutral benchmarks, but seeking to avoid high beta and momentum, both of which appear highly susceptible to the burden of excessively high expectations.
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Click to view index descriptions:
S&P 500 Index: large cap market index that measures the performance of a representative sample of 500 leading companies in leading industries in the US.
S&P Midcap 400 Index: designed to measure the performance of 400 mid-sized companies, reflecting the distinctive risk and return characteristics of this market segment.
S&P Small Cap 600 Index: measures the small-cap segment of the US equity market. The index is designed to track companies that meet specific inclusion criteria to ensure that they are liquid and financially viable.
S&P 500 Momentum Index: measures the performance of securities in the S&P 500 universe that exhibit persistence in their relative performance.
MSCI EAFE (Europe, Australasia & Far East) Index: a free-float adjusted market capitalization index that is designed to measure developed market equity performance, excluding the US and Canada.
MSCI Emerging Markets Index: captures large and mid cap representation across 24 Emerging Markets (EM) countries.
MSCI Korea Index: designed to measure the performance of the large and mid cap segments of the South Korean market. The index covers about 85% of the Korean equity universe.
MSCI Taiwan Index: tracks the performance of large and mid-cap stocks in Taiwan, covering approximately 85% of the free float-adjusted market capitalization.
Bloomberg US Aggregate Bond Index: measures investment grade, USD-denominated, fixed-rate taxable bond market. Includes Treasuries, government-related and corporate securities, mortgage-backed and asset-backed securities, and corporate securities, with maturities greater than one year.