##  [# Micron Surge Pushes 2x Leveraged ETF MUU Past $1 Billion](/sections/features/micron-surge-pushes-2x-leveraged-etf-muu-past-1-billion) 

 

# Micron Surge Pushes 2x Leveraged ETF MUU Past $1 Billion

 

 

Strong gains in Micron have propelled the 2x leveraged MUU into the billion-dollar club.



 

 

 

 

 [![sumit](/sites/default/files/styles/author_image_icon/public/2023-03/Sumit_0.png?itok=SO-7S5SH "sumit")](/authors/sumit-roy) 

[By Sumit Roy ](/authors/sumit-roy)

 Jan 26, 2026

 Edited by: ETF.com Staff

 

 

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An explosive rally in Micron Technology has turned a leveraged ETF tied to the stock into a billion-dollar product.  
  
The [**Direxion Daily MU Bull 2X Shares (MUU)**](/MUU) now has nearly $1.1 billion in assets under management, making it one of just seven U.S.-listed single-stock ETFs that have crossed the $1 billion threshold.  
  
Micron shares have surged amid [booming demand](https://www.investmenttakes.com/p/how-ai-turned-memory-into-a-bottleneck) for high-bandwidth memory, a critical component used in artificial intelligence systems. The company is one of only a few global suppliers in the space, alongside South Korea’s SK Hynix and Samsung Electronics.  
  
With a market capitalization of roughly $441 billion, Micron stock is up about 37% year-to-date. MUU, which provides 2x daily exposure to the stock, has gained roughly 79% over the same period.

## Better Than 2x

Over the past year, Micron shares are up roughly 330%, while MUU has surged more than 1,000%. That outperformance exceeds the fund’s advertised 2x multiple, largely because daily rebalancing can amplify gains during strong, persistent trends.  
  
![MUvsMUU](/sites/default/files/inline-images/MUvsMUU.png)  
  
Daily rebalancing works by mechanically increasing exposure as a stock rises and trimming exposure as it falls. In choppy markets, that dynamic can lead to volatility decay, effectively forcing the fund to buy high and sell low. But when a stock moves sharply higher, as Micron has, rebalancing can boost returns.  
  
Over longer holding periods, however, daily rebalancing tends to become a headwind. Volatility decay is particularly pronounced in single-stock leveraged ETFs, where sharp drawdowns are inevitable. Financing costs can also weigh on returns, since leveraged ETFs pay interest on the swaps used to maintain exposure.

 
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## The $1 Billion Club

MUU isn’t the only billion-dollar single-stock ETF. Others include the [**Direxion Daily GOOGL Bull 2X Shares (GGLL)**](/GGLL), as well as several options-based products from YieldMax, such as the [**YieldMax TSLA Option Income Strategy ETF (TSLY)**](/TSLY), [**YieldMax MSTR Option Income Strategy ETF (MSTY)**](/MSTY), and [**YieldMax NVDA Option Income Strategy ETF (NVDY)**](/NVDY).

The largest single-stock ETFs are the [**Direxion Daily TSLA Bull 2X Shares (TSLL)**](/TSLL), with roughly $6.3 billion in assets, and the [**GraniteShares 2x Long NVDA Daily ETF (NVDL)**](/NVDL), with about $4.4 billion.  
  
Excluding the options-based products, which have very different risk and return profiles, MUU ranks as the fourth-largest 2x leveraged single-stock ETF on the market.

## The Risks

Recent performance highlights the risks associated with these products. TSLL is down roughly 27% over the past year, even as Tesla shares are up about 11%.   
  
NVDL is up about 80% over the same period, compared with a roughly 58% gain for Nvidia.  
  
These ETFs are generally used as short-term trading tools and as alternatives to margin for aggressive traders. Holding them over longer periods introduces significant risks, particularly in volatile or declining markets, where the effects of daily leverage tend to work against investors.



 

 

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 [ Sumit Roy Senior ETF Analyst ](/authors/sumit-roy) 

 

 

  Sumit Roy is the senior ETF analyst for etf.com and author of (Don't) Invest Like a Pro. He creates a variety of content for the platform, including…   [View Bio](/authors/sumit-roy)

 



 

 


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