---
title: "Summary of short positions on RKLB and TSLA"
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/44575457.md"
description: "By Grok, based on the 'float ratio', RKLB is much more volatile than Tesla; in USD nominal terms, Tesla's short interest is larger..."
datetime: "2026-10-27T15:42:49.000Z"
locales:
  - [en](https://longbridge.com/en/topics/44575457.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/44575457.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/44575457.md)
author: "[Boss's Boss](https://longbridge.com/en/profiles/123.md)"
generator: "portal-rs"
---

# Summary of short positions on RKLB and TSLA

**by Grok**

**By "float short ratio," RKLB is much more aggressive than Tesla; by dollar nominal, Tesla's short volume is larger.**$Tesla(TSLA.US) $Rocket Lab(RKLB.US) 

Same settlement date **2026-10-15** (FINRA / [ChartExchange](https://chartexchange.com/symbol/nasdaq-rklb/short-interest/)):

|                   | RKLB            | TSLA            |
| ----------------- | --------------- | --------------- |
| Short Shares      | \~**45.3M**     | \~**69.35M**    |
| % of Float        | \~**8.1%–8.3%** | \~**2.2%–2.5%** |
| Days to Cover     | \~**2.0**       | \~**2.2**       |
| Nominal Value (~) | \~**$2.5bn**    | \~**$25.1bn**   |

So your point about it being "more aggressive than Tesla" holds for **relative positioning**: RKLB's shorts on the float are roughly **3x that of Tesla**. Tesla just has a massive float; while its absolute short share count and dollar value are higher, the ratio isn't actually that high.

Looking at "accumulation": RKLB has piled up from a low of ~**19.6M shares** in late Feb this year to ~**45.3M** now (with a mid-year spike, +25% single period on 6/30). Recent periods have seen steady additions in the **43–46M** range, not a one-off spike. The public borrow fee rate is around **0.3%**, with ample availability—indicating heavy shorting, but **far from a "hard-to-borrow" squeeze setup**.

Interpretation: The market is using shorts to hedge against "high valuation / execution and competitive risks" (launch cadence, Neutron, space stock valuation pullbacks). An 8% float short + 2 days to cover expresses enough pessimism, but **doesn't support a "shorts must blow up" narrative**; to watch for a true squeeze, monitor borrow fees spiking, days to cover extending, and daily volume plummeting.

If you're running a long/short pair or position with RKLB vs. Tesla, let me know your direction, and I'll help break down the risk along that line.

### Related Stocks

- [RKLB.US](https://longbridge.com/en/quote/RKLB.US.md)
- [TSLA.US](https://longbridge.com/en/quote/TSLA.US.md)
- [LIME.US](https://longbridge.com/en/quote/LIME.US.md)
- [RKLX.US](https://longbridge.com/en/quote/RKLX.US.md)
- [RKLZ.US](https://longbridge.com/en/quote/RKLZ.US.md)
- [TSL.US](https://longbridge.com/en/quote/TSL.US.md)
- [TSLL.US](https://longbridge.com/en/quote/TSLL.US.md)
- [TSLQ.US](https://longbridge.com/en/quote/TSLQ.US.md)
- [TSLS.US](https://longbridge.com/en/quote/TSLS.US.md)
- [TSLW.US](https://longbridge.com/en/quote/TSLW.US.md)

---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**