---
symbol: "SPCX"
name: "SpaceX"
date: 2026-07-31
change_pct: -4.463732176069429
direction: "down"
event_type: "other"
url: "https://perplo.app/why/SPCX/2026-07-31"
updated_at: 2026-07-31T23:06:35.309Z
---

# Why SpaceX (SPCX) fell 4.46% on July 31, 2026

SpaceX (SPCX) fell 4.46% on July 31, 2026 — Short interest rises ahead of earnings, lockup expiry.

## What happened

Short interest in SpaceX surged ahead of earnings and the impending lockup expiration, a window when early shareholders can dump holdings into the market.

## Why it moved

Rising shorts signal trader conviction that near-term catalysts — earnings miss or heavy lockup selling — will drive the stock lower or trigger volatility that shorts can exploit for profit.

## Why it matters

SpaceX sits within the Space & Defense theme, which has cooled as commercial launch enthusiasm faded; funding cycles and near-term demand visibility are now the prism, and lockup events are a classic moment of forced…

## What would break the thesis

If earnings beat and lockup shares are absorbed without a selloff, the short thesis breaks and trapped shorts cover, driving a squeeze higher.

## Sources

- [Short sellers pile into SpaceX ahead of earnings, lockup expiration](https://finnhub.io/api/news?id=9a3af99bc841828e612a099cb803e5539a396c30ca93bcc732275c3ada2e0641) — Yahoo
- [Elon Musk Cools Off Tesla-SpaceX Merger Speculation as SpaceX Stock Hits Record Low](https://finnhub.io/api/news?id=7f7c063e55604f3f4b815d3984d2a154248ef53643745f7719d22db080eb8846) — Yahoo
- [SpaceX Is Now Down 36% in a Month. Would You Be Better Off With Rocket Lab or ASTS SpaceMobile?](https://finnhub.io/api/news?id=1363f1e4f5628fe053282ce47a2c1db24d6869d23f480a210485108b5de879b6) — Yahoo

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