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zeekayandHanzo Dev 70f6883235 Restore the regulated-markets papers; Lux holds the licences
A July commit removed eight papers on the premise "no license — DEX/non-custodial
only". That premise is wrong: Lux operates an ATS, a broker-dealer, a transfer
agent and a bank, and this material is resold at lux.financial. The merge that
brought main in preserved the removal because the commit stated a reason, which
is how a stale reason outlives the fact it rested on.

Back, at the versions main carried — main never received the removal, so its
copies are the later ones: the ATS architecture, the security-token standard,
smart order routing, institutional custody, MPC custody, post-quantum securities,
the SSB partnership and the CoinBridge brief. 83 files.

Co-authored-by: Hanzo Dev <[email protected]>
2026-08-30 15:58:05 -07:00

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1.4 KiB
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\section{Order Matching Priority}
\label{sec:priority}
\subsection{Priority Rules}
The SOR applies the following priority hierarchy for venue selection:
\begin{enumerate}[nosep]
\item \textbf{Price improvement}: Venues offering better prices are preferred.
\item \textbf{Internalization}: If the Lux ATS internal book can fill the order at NBBO or better, the order is internalized (matched against resting orders on the internal book).
\item \textbf{Settlement speed}: On-chain venues (T+0) are preferred over traditional venues (T+1) at equal price.
\item \textbf{Fill rate}: Venues with higher expected fill rates are preferred.
\item \textbf{Latency}: Among equal-quality venues, lower-latency venues are preferred.
\item \textbf{Cost}: Trading fees are factored into the effective price.
\end{enumerate}
\subsection{Internalization Policy}
Internalization (matching orders against the internal book rather than routing to external venues) is permitted when:
\begin{itemize}[nosep]
\item The internal book offers price improvement over the best external quote.
\item The order can be fully filled from the internal book.
\item Both parties pass compliance checks for the security \cite{lux-security-token-standard}.
\end{itemize}
When internalization provides no price improvement, orders are routed to the venue with the best composite score per the optimization in Section~\ref{sec:model}.