Order Splitting

Categories: Trading

“Order splitting” is the practice of splitting a huge trade order into smaller orders so they can be executed automatically.

If an individual investor wants to trade 1,000 shares or fewer of a NASDAQ-listed security, they’re eligible for the SOES (Small Order Execution System), which means their trades are automatically executed as soon as they hit a predetermined threshold.

This system was designed to give smaller investors the same opportunities as large, institutional investors, and to make sure it didn’t get abused by big investors pretending to be small ones, NASDAQ went ahead and outlawed order splitting. This is less of an issue today, since electronic trading platforms have somewhat leveled the playing field by allowing individual investors to quickly execute their own trades, regardless of what those big institutional investors are doing.

Related or Semi-related Video

Finance: What is a Round Lot?7 Views

00:00

Finance allah shmoop what is around a lot Well here's

00:07

a square lot and no there really isn't such a

00:10

things a square lots of don't write us so what's

00:12

around lot Well it's one hundred shares of stock and

00:16

or it can be any form or subset of shares

00:19

easily divisible by one hundred Why does this matter Because

00:23

one hundred years ago computers well they weren't even a

00:26

thing and brokerages manually did math on abacus is says

00:31

or abba chi or just you know on that graph

00:34

paper that grandpa has with this thing called a pencil

00:37

Yeah people actually use those things one hundred years ago

00:40

Well the odds of making a mistake from a non

00:43

round lot when shares were split or divided or sliced

00:46

and diced in some julian fry kind of way well

00:49

they were really high so the brokerages wanted to encourage

00:52

investors to buy and sell in round lots to make

00:55

both their jobs easier and to mitigate the risk of

00:59

errors Well historically brokerages would have to bundle non round

01:03

loss together such that they would truncate However many odd

01:07

shares were left after evenly dividing by one hundred in

01:10

order to do business with each other as they were

01:13

in disparate form all around the country in the world

01:16

and telecommunications was basically you know a guy shouting in

01:20

the street asking for buyers like check out this picture

01:23

of wall street's or you know nineteen twelve So what

01:26

is it called when someone wants to sell one hundred

01:29

thirty four point three shares it's a mixed lot Yeah

01:34

there's one unit of around a lot of one hundred

01:37

shares there and then there's thirty four point three shares

01:39

truncated or leftover as an odd lot and generally speaking

01:44

for a long time investors selling odd lots were punished

01:49

in the form of much higher commission rates that they

01:52

would pay in order to execute the trades of those

01:55

odd lots And eventually with computers and regulatory concern the

01:59

commission's minimized because if you think about it the people

02:02

paying the much higher commission rates were generally the poor

02:05

or disenfranchised or uneducated Otherwise they'd have enough dough to

02:09

just buy round lots right And after enough of them

02:12

got taken while the world finally figured out how to

02:14

smash that square peg into that round hole you know 00:02:18.04 --> [endTime] It works

Find other enlightening terms in Shmoop Finance Genius Bar(f)