SPCX Tops $194 as a Full Greenshoe Adds Supply Into a 4% Float

The Catalyst: A Full Greenshoe Closes the Biggest IPO Ever

On June 15, SpaceX's underwriters exercised the full greenshoe, buying an additional 83,333,333 shares at the $135 offer price and lifting total proceeds to about $85.7 billion from the initial ~$75 billion. That took the deal to 638,888,888 Class A shares and locked in the largest IPO on record, with Goldman Sachs and Morgan Stanley leading the book.

The greenshoe matters because it is the single largest tranche of genuinely new, freely tradeable supply the stock will absorb in its first weeks. And it hit the tape the same session SPCX extended its post-debut climb — up 16.53% over 24h to $194.50, roughly 43% above the offer since the June 12 debut closed at $160.95. More supply, higher price, same day. That tension is the whole story.

Why More Supply Didn't Sink the Bid

Normally an 83.3 million-share block is a headwind. Here it barely registered, because the demand on the other side is mechanical and price-insensitive. The public float is still only about 4% of shares outstanding, so even after the greenshoe the tradeable supply is tiny relative to the funds that are forced to own it.

MSCI inclusion took effect June 13, one day after listing. A revised Nasdaq methodology that lets a top-40 newly listed name enter the Nasdaq-100 after just 15 trading days puts SPCX on track for inclusion around July 6, with index funds estimated to need on the order of $7 billion of stock and no discretion behind the buying. Discretionary whales are stacking on top: Ron Baron added about $1 billion and Gina Rinehart bought over $1 billion, and retail interest in space names is at its highest since December 2024. Against that, a one-time $135 supply print gets absorbed instead of overwhelming the tape.

The Setup and What Breaks It

This is a flow-driven market, not a fundamentals one. SPCX's Hyperliquid perp turned over $523.6M in the last 24h, a real venue for expressing the squeeze without touching the cash float. The first genuine fundamental anchor isn't until the September 2 earnings report, when Starlink subscriber growth and xAI/Starship economics finally get tested against a valuation already well north of the ~$1.75 trillion debut mark.

Until then the logic holds as long as the float stays thin. The risks are the obvious structural ones: the eventual 180-day lockup expiry that releases insider stock, any move to widen the float, or index demand getting fully priced in before the July inclusion actually clears. The greenshoe was the first real test of whether new supply could break this bid. It didn't — which is the most telling data point of the week for anyone short the float.