SpaceX officially joined the Nasdaq-100 on Tuesday, marking one of the fastest index inclusions ever seen for a major U.S. listing. The move places the recently listed aerospace company into one of the world's most widely tracked technology indices, bringing a new wave of institutional demand that could influence the stock's near-term performance.

Unlike discretionary investors, index funds are required to mirror the Nasdaq-100. As a result, funds tracking the benchmark must purchase SpaceX shares while reducing holdings in other constituents to maintain the index's weighting. This mandatory portfolio adjustment is expected to generate significant buying activity.

Analysts estimate that the index inclusion could trigger billions of dollars in passive inflows. Some forecasts suggest demand from Nasdaq-100 tracking funds may exceed $4 billion, while more optimistic estimates place total buying closer to $8 billion.

However, the supply of tradable shares remains limited.

Only a relatively small portion of SpaceX shares is currently available on the public market, with the majority still held by company insiders, employees and early investors under lock-up restrictions. This limited free float means that strong buying demand may have a greater impact on price movements than it would for a more widely traded stock.

Additional shares are expected to enter the market later this year as lock-up periods expire, beginning with a notable release scheduled for August. As more shares become available, the balance between supply and demand is likely to shift, providing a clearer picture of the stock's longer-term valuation.

Since its market debut, SpaceX has experienced substantial volatility. The stock surged roughly 50% during its first few trading sessions before giving back much of those gains, highlighting the heightened speculation surrounding one of the year's most anticipated listings.

From a technical perspective, traders are closely watching the $172 to $180 range, which has emerged as an important resistance zone. A sustained move above this area could open the door for another test of the stock's record high above $200. Conversely, failure to hold above key support levels near $150 may increase downside pressure and signal a weaker technical outlook.

While inclusion in the Nasdaq-100 is expected to provide short-term support through passive fund buying, investors will also be monitoring upcoming increases in share supply and broader market sentiment to determine whether the stock can maintain its momentum over the coming months.

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