Selecta
Journal, position sizing and statistics in one tool.
- Trading journal for every trade you take
- Position size calculated from your risk and stop
- Stats vault to see where your edge is strongest
- Measure whether your sizing adds to your edge
Execution engines built for alpha.
You know the setup. The open moves faster than your hands.
Automated and semi-automated execution software for US equities, built around your platform. For trading groups, prop firms and independent investors.
Clients
The firms we build with and for.
What we do
One focus: execution software built around your trading platform, for US equity markets.
Execution engines
Custom engines that place, size and manage orders for trades too fast or too complex to handle by hand.
Execution scripts
Automated and semi-automated scripts that turn your trading rules into consistent, repeatable execution.
Built around your platform
Each build is scoped to the platform and broker you use, so your execution logic fits how you already trade.
From your rules to live orders
You bring the strategy. We turn it into software that carries it out the same way every time.
Your strategy
Rules, signals and sizing logic.
Codified and tested
Built and validated by Polarity.
Precise execution
Fast and consistent, on your platform.
Our goal: take human latency and inconsistency out of execution, so you can focus on finding edge.
Products
Proprietary tools built in-house and adapted to each client through a custom build.
Orbius
Early accessAn execution engine for trades too fast or complex to place by hand.
- Connects to Interactive Brokers today
- Carries out the trade specifics you define
- Acts at machine speed when timing matters
- Reduces manual error under pressure
Not sure which fits? Talk it through with us.
Book a free 15-minute callSee it working
Orbius: every order, stop and target in one view.
Selecta: see where your edge really is.
Platforms
Connectivity on demand to any of the platforms below.
About
Built by someone who has run the desks it serves.
Polarity Analytics builds execution software for US equities. It comes from years inside prop desks and brokerage operations, where a late order, a wrong risk limit or a routing fault has a direct cost.
Yurii Kitikari, CMT, CFTe
Founder
Yurii has built and run US equity prop desks and brokerage operations since 2014. Orbius and Selecta run daily in Yurii's own trading, so problems are found in live markets, not only in simulation.
PlatformsImplemented DAS, Lightspeed and Sterling from scratch. Supports Takion, Silexx and Vega.
RiskRuns server-side buying power, risk limits and exchange entitlements.
ExecutionChecks order routing directly with the clearing broker.
TeamsHas built and trained trading and support teams of 5 to 20+.
- CMT
- CFTe
- CySEC Advanced
- CISI International Introduction to Investment Award
- CISI Level 2 Award in Fundamentals of Financial Services
Writing: Discipline and Proprietary Trading Chronicles: Management
Connect on LinkedInWho we build for
Traders who already have rules and want them carried out without manual delay or inconsistency.
Trading groups
One execution process, applied the same way across your traders.
Prop firms
Execution and risk rules that hold across the whole desk.
Independent investors
Your own rules, carried out consistently and without hesitation.
How we work
From first call to live execution in three stages. Every project follows the same process, so the logic is clear before any code is written.
- Written specification Minimum 1 weekWe document your entry and exit rules, position sizing and risk limits, and find the discretionary steps that can become rules. You receive a written specification of what the software must do.
- Complexity and workload estimate Minimum 1 weekWe map the specification to your platforms, brokers and data feeds, then assess technical complexity, integration points, latency requirements and edge cases. Before development starts, you receive a fixed scope, a timeline and a quote.
- Development and testing Minimum 1 week, depending on scopeWe build the engine or script to the agreed specification, then test it in simulation, on a demo account and in live market conditions at limited size. You receive the finished software with documentation, and support during the first live sessions.
Most projects take three weeks or more from first call to delivery, depending on complexity.
The first stage starts with your rules.
Send us your rulesBuilt with guardrails
Controls in Orbius that keep execution inside the limits you set.
Limits before the order
Risk and buying-power limits you set are checked before an entry order is placed.
Size follows your risk
Position size is worked out from your dollar risk and the distance to the stop.
No acting on stale prices
If prices stop updating while it waits for a setup, the engine pauses and raises an alert.
A full record
Decisions and order events are logged with timestamps, so every action can be reviewed.
These controls reduce operational error. They do not remove trading risk, and they do not replace your own oversight of live positions.
Questions
How long does a project take?
Most projects take three weeks or more from first call to delivery. Each of the three stages takes at least a week, and development depends on the scope you agree.
Which platforms can you connect to?
We offer connectivity on demand to Interactive Brokers, DAS Trader, Sterling Trading Tech, Takion, MetaQuotes and TradeStation. Tell us what you use, and we will confirm the details during scoping.
How is the software tested before it trades?
We test it in simulation, on a demo account and in live market conditions at limited size before it runs at full size.
Do you guarantee trading results?
No. We build and test execution software, and trading always involves risk, including the loss of capital. Past results do not guarantee future results.
Is this investment advice?
No. We do not tell you what to trade. Our software carries out rules you define.
Book your free 15-minute consultation call.
Pick a time that suits you, and we will go through what can be automated. Prefer to write? Send us your rules using the form.
Book a free 15-minute callOr email [email protected]