What is the underlying index or basket of pure quantum companies that QPUX tracks, and what are its constituents?

Based on the press release you provided, the only information disclosed is that Defiance has launched QPUX – a 2× leveraged exchange‑traded fund that aims to deliver twice the daily performance of “pure quantum” companies. The announcement does not specify:

• the exact index or basket that QPUX is designed to track (e.g., whether it follows a proprietary Defiance‑constructed index, a third‑party index, or a custom‑selected portfolio),
  
• the individual constituents of that index or basket (i.e., which quantum‑technology firms are included, their weightings, or any eligibility criteria such as market‑cap, revenue focus, or geographic limits).

Because those details were not included in the news excerpt, I can’t provide the underlying index name or list the companies it contains.

What you can do next

1. Review the ETF’s official filing or prospectus – Leveraged ETFs are required to publish a prospectus (or “statement of additional information”) that names the reference index (if any) and enumerates the holdings.
   
2. Check Defiance’s website or press release archive – The firm often posts a “factsheet” for each new ETF, which typically includes the index methodology and a full list of current constituents.
   
3. Contact Defiance Investor Relations – They can confirm whether QPUX tracks a proprietary “Pure Quantum” index, a third‑party index (e.g., from MSCI, S&P, or another provider), or a custom basket, and provide the up‑to‑date component list.
   

If you obtain the prospectus or a detailed fact sheet, feel free to share it and I can help you interpret the index methodology and the specific quantum‑company holdings.