Every fractional order your front end accepts becomes a rounding, an aggregation, a principal position and an allocation before it can settle. Multiply that by a retail book and it is an operations problem, not a product feature. NOVA CMX clears and settles fractional flow on the same platform that runs the rest of your post-trade.
Nov 2024
fractional interests became qualifying ISA investments in the UK
HMRC, ISA Regulations amendment
Whole units
is all a CSD or CCP will accept, wherever the order originated
Market infrastructure rules
SGX HKEX TSE
Asian large-caps now offered fractionally to retail investors
Vendor launches, May 2025
2.7 million
fractional liquidations missed by one firm's round-lot reporting
FINRA AWC settlement
Notional client orders have to be netted and rounded into whole-share street-side trades before anything can reach a CCP.
The firm buys or sells the leftover fraction as principal, holding intraday price exposure and inventory it never intended to own.
Every street trade has to be broken back down to the exact client fraction, priced consistently, at the volumes retail generates.
Dividends, splits, rights and reverse splits all produce fractional entitlements that must be rounded, cash-settled or accrued per client.
Reporting systems built for whole shares silently drop principal-side fractional legs. Regulators have already fined firms for the gap.
Transfers, wrapper eligibility and client reporting all need a record of beneficial fractional ownership the CSD does not hold.
Notional orders netted and rounded into whole-share market trades.
Whole units to the CCP and CSD, fractions held on the book of record.
Fractional entitlements calculated for every corporate action.
Residual fractions booked to inventory under defined limits.
Automatic allocation to client positions at consistent prices.
Every leg reportable, including the principal-side fraction.
One rule set per market, configured rather than coded.
Breaks raised as exceptions, not found at month end.
Beneficial ownership held to the decimal for custody and wrappers.
Notional orders netted and rounded into whole-share market trades.
Residual fractions booked to inventory under defined limits.
One rule set per market, configured rather than coded.
Whole units to the CCP and CSD, fractions held on the book of record.
Automatic allocation to client positions at consistent prices.
Breaks raised as exceptions, not found at month end.
Fractional entitlements calculated for every corporate action.
Every leg reportable, including the principal-side fraction.
Beneficial ownership held to the decimal for custody and wrappers.
Fractional flow is high in volume and low in value. It only works when the cost of processing a trade is close to zero, which means it has to run on the same core as everything else you settle.
01
Serve small-ticket and first-time investors without a minimum-lot barrier.
02
Volume grows in the front end without headcount growing behind it.
03
Residual positions visible, limited and reconciled in real time.
04
Fractional legs captured with the rest of the book, not around it.
05
Add a fractional market by configuring rules, not building a system.