For investors who both fear missing out on the Nasdaq 100's record-breaking rally and worry about a potential bubble in large-cap technology stocks, Bank of America suggests considering equity derivatives to participate in the upside rather than directly holding the underlying shares, in order to limit potential losses if the market suddenly reverses.

Recently, the technology-heavy Nasdaq 100 index has continued to hit all-time highs even as U.S. Treasury yields have climbed sharply.

However, Bank of America points out that this rally has been driven mainly by a small number of AI-related mega-cap technology stocks, and the market's narrow breadth has made whether tech stocks are exhibiting bubble characteristics a key focus for investors.

Bank of America strategists Arjun Goyal, Riddhi Prasad and Benjamin Bowler said in a report released on Tuesday: "Low market breadth is a typical feature of the bubble formation process, and this situation usually persists until the bubble bursts."

For investors who worry about missing the rally and consequently underperforming those fully allocated to the Nasdaq 100, Bank of America believes that options may be a more efficient tool for participation compared with directly buying stocks.

The bank continues to favor a call option spread strategy on the Invesco QQQ Trust ETF (QQQ.US), which tracks the Nasdaq 100 index, viewing it as a way to capture potential upside gains while limiting risk exposure.

Bank of America also said investors can sell protective options against a decline in the Nasdaq 100 index to collect premiums, and use that income to fund call option positions.

However, such strategies involve selling downside protection and may also bring additional risks during a sharp market decline, making them more suitable for investors capable of managing complex options positions.

Bank of America ranked 32 types of assets and industries by their degree of bubbleization.

According to the bank's "bubble risk indicator," U.S. technology stocks are currently in the highest tier of bubble risk readings.

In addition, oil, healthcare and the South Korean stock market also rank near the top of the list.

The South Korean stock market is highly influenced by two major technology companies, SK Hynix and Samsung Electronics.

For more sophisticated traders, Bank of America also proposed that more complex options strategies can be structured with dealers, so that if the Nasdaq 100 continues to rise while interest rates keep climbing, the related products can generate returns.