Russell 2000's Unusual Surge Raises Sustainability Concerns Amid Super Micro and MicroStrategy's Massive Gains


Russell 2000's surge led by AI and crypto stocks Super Micro and MicroStrategy, raising sustainability concerns for the index.

By Barry Stearns

4/4, 06:00 EDT

Key Takeaway

  • Super Micro and MicroStrategy's massive gains, 257% and 154% respectively, drive Russell 2000's unusual surge, raising sustainability concerns.
  • Their expected June exit from the index due to oversized market values could destabilize the Russell 2000's recent performance.
  • Despite these anomalies, broader challenges for small-cap stocks persist, with the index still lagging behind larger counterparts.

Market Anomalies

The Russell 2000 index, a barometer for small-cap stocks, has recently witnessed an unusual surge, primarily driven by two stocks: Super Micro Computer and MicroStrategy. These companies, tied to the burgeoning fields of artificial intelligence (AI) and cryptocurrency, respectively, have seen their market values balloon to a combined $87 billion. This year alone, Super Micro has soared by 257%, while MicroStrategy has jumped 154%, significantly outpacing other market participants. However, beneath this veneer of success, several underlying challenges and market distortions raise concerns about the sustainability of these gains and the broader implications for the Russell 2000 index.

Unsustainable Growth?

The disproportionate influence of Super Micro and MicroStrategy on the Russell 2000's performance is stark. Together, they contributed more than a third of the index's 5.2% return in the first quarter. Yet, this outsized impact is not expected to last. Steven DeSanctis, a small and midcap U.S. equity strategist at Jefferies, points out that both companies are anomalies within the Russell 2000 due to their large market values, far exceeding the median of about $900 million for stocks within the index. Their expected departure during the index's annual rebalancing in June could leave a void and potentially destabilize the index's recent gains.

Jumbo-Sized Tenants

Supermicro's nearly 2% weighting in the Russell 2000 and nearly 4% in the Russell 2000 growth index, along with MicroStrategy's significant weightings, underscore their dominant positions. DeSanctis notes that Supermicro's presence is "by far the biggest single-stock weight ever in the index," a situation that underscores the unusual market dynamics at play. While the demand for Supermicro’s servers and MicroStrategy's successful bet on bitcoin have propelled their stock prices, these are not typical small-cap stories. Their trajectories are heavily reliant on specific market trends that may not be sustainable in the long term.

Legacy Companies in the Limelight

Both Supermicro and MicroStrategy are decades-old companies that have recently found themselves in the spotlight due to external factors: a surge in demand for AI capabilities and a rally in cryptocurrency prices, respectively. While Supermicro's revenue is expected to more than triple by June 2026, and MicroStrategy's leveraged bet on bitcoin has paid off handsomely, these successes hinge on volatile and unpredictable markets. The reliance on such factors introduces significant risk, especially considering the speculative nature of cryptocurrency investments and the rapid pace of technological change in AI.

Small-Cap Struggles

The Russell 2000's performance, despite the boost from Super Micro and MicroStrategy, highlights broader challenges facing small-cap stocks. The index remains 15% below its record from November 2021 and has consistently lagged behind larger stock indexes. Factors such as higher interest rates have particularly impacted sectors like financials, real estate, and utilities, which make up a significant portion of the index. While some investors remain optimistic about potential rate cuts, the underlying issues of market distortion and overreliance on a few high-performing stocks cannot be ignored.