A small, tactical short in SpaceX (SPCX) after the largest IPO in history. The trade leans on two things: the documented tendency of IPOs to underperform over their first one-to-three years, and a parabolic post-listing run straight into the round, psychological 200 and 225 levels where momentum tends to stall. Sized at 3%, it is a fade of stretched sentiment, not a view on the business.
SpaceX completed the largest IPO in history on 12 June, pricing at $135 a share. It opened around $150, closed its first day near $161, and then ran almost straight up to an all-time high near 225 inside four sessions. That is a near-vertical, heavily retail-driven move, the kind of debut where demand and narrative, not valuation, set the price.
I am fading that move. Not because the company is bad, but because the price action has the signature of a crowded, euphoric first week, and those rarely hold their first highs.
The long-run evidence on new listings is consistent. Jay Ritter's data at the University of Florida, and the NBER reviews of IPO activity, find that IPOs as a group underperform the broader market over their first one-to-three years, on the order of a few percent a year of negative abnormal return. The first-day pop is real; the multi-year drift is the opposite.
The signal sharpens for deals that stumble early. Of IPOs that break and trade below their early levels, a clear majority, roughly two-thirds in Ritter's three-year sample, go on to post negative three-year returns. A fresh, hyped listing running vertically is exactly the kind of name where that drift can begin.
The base rate is the why; the levels are the when. The move ran straight into the round, psychological 200 and 225 numbers. Round levels like these act as natural magnets and then as resistance: they are where early buyers set their mental sell points and where momentum chasers run out of new money. I shorted 2% into the 200 area on 16 June and added a further 1% toward the 225 high on 17 June, for a 3% position at a blended entry near 203.
The idea is to fade the exhaustion of a parabolic first week at the exact levels where that kind of move tends to stall, not to pick a precise top.
This is deliberately small at 3%. Shorting a euphoric, retail-driven name with limited borrow is dangerous: a short squeeze can run far further than fundamentals justify, and a largest-IPO-ever name with a charismatic founder is exactly the kind of stock that can do that. The cap on size is the risk control.
What would prove it wrong is a clean, sustained break back above the 225 high on real volume, which would say the momentum is not done and the fade is early. Until then, the base rate and the stalled levels do the work, and the small size keeps the squeeze risk contained.
The live position. This idea is tracked with real entries, exits and option legs on the Trade Log (SPCX). Educational only — not financial advice or a recommendation.