Commentary

Is It a Bubble? (Part V)

It’s likely not a bubble. Earnings are high. Prices are high because they anticipate future high earnings growth. The historical record shows that growth rate is achievable.

Commentary

QuantStreet May 2026 Letter: April Flowers

April saw a strong rally, which fully reversed the stock market’s losses in March. US markets set new all-time highs, and European stocks came within whispering distance of their all-time highs as well.

Commentary

QuantStreet April 2026 Letter: Iran War

March 2026 was a rough month for financial markets. Broad indexes experienced large selloffs, led by international stocks, though many of these still remain up in 2026. The dollar rallied strongly, breaking its year-plus downtrend.

Commentary

The War in Iran

With apologies if this is the tenth investment piece you’ve read this week about the impact of the Iran War on asset markets, but we wanted to share our thoughts on what’s going on with our investors. First a recap. The S&P 500 is down 5.4% since the February 28, 2026 start of the Iran War.

Commentary

A Brief History of Energy Crises

Iran's de facto closing of the Strait of Hormuz precipitated the latest in a series of energy crises. Since the 1970s, some energy spikes were associated with weak stock markets, but some were not.

Commentary

QuantStreet March 2026 Letter: AI Revolution

AI fatigue has taken hold of financial markets. The companies powering the AI revolution (Nvidia, Google, Microsoft) were down. The companies that are being (or might be) disrupted by AI, like software makers, were also down.

Commentary

QuantStreet Street Investor Letter Dollar Weakness

The dollar finished the month down 1.3% for a litany of reasons, including our progressively nastier spat with Canada and the Trump administration's insistence on liberating Greenland.

Commentary

QuantStreet Street Investor Letter Reflections on 2025

With 2025 in the books, we take a brief pause to reflect on QuantStreet over the last few years. We started managing our first portfolio in December of 2021. What started out as just an idea has grown into a business serving many clients, both retail and institutional. 2025 was a year of growth for QuantStreet, and we hope to continue to build on this in 2026.

Commentary

QuantStreet December 2025 Letter: Market Cycles

After a "mini swoon" in November driven by AI bubble concerns, market tranquility has returned this December as investors await the Fed's widely anticipated 25 basis point rate cut and Chair Powell's subsequent remarks.

Commentary

QuantStreet October 2025 Letter: Positive Narratives

October was a good month for financial markets, with a broad-based rally across geographies and sectors. Tech stocks and gold led the way, and the dollar finally had an up month. QuantStreet's strategies, across different risk levels, moved in line with or slightly exceeded benchmarks.

Commentary

What’s Going On With Gold?

If gold were the perfect hedge for inflation—it isn’t—then gold prices divided by the overall price level would be constant over time. However, real gold prices (adjusted for inflation by dividing by the CPI price level) are currently at multi-decade highs.

Commentary

QuantStreet October 2025 Letter: Negative Narratives

The market is in a funny place. September was a strong month for financial markets, its typical negative seasonality notwithstanding.

Commentary

Replicating Target Date Funds

Target date funds represent the investment industry's best thinking about how people should invest for retirement.

Commentary

QuantStreet September 2025 Letter: Mounting Concerns

In our opinion, all of these legitimate concerns are, to various degrees, already priced into financial markets. The impact of these on the ongoing stock market rally will depend on their trajectory relative to investor expectations.

Commentary

QuantStreet August 2025 Letter: Cracks Starting to Show

Some things change in markets and some don't. The dollar partially reversed its year-to-date decline in July, and US equities had their first moment in the sun relative to international peers thus far in 2025.