Journaling, planning and trade review

Know which of your habits cost the most, in dollars.

QuantOS connects to your brokerage accounts, rebuilds every round trip with real fees, and replays each trade against the market around it. Start each session prepared and end it with answers.

Start Your Free 14-Day Trial See Free Markets

Broker password never stored
Fees from your own transaction lines
Plans from $25 a month

S&P 500Index · Loading 5-minute candles…

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Today’s Market

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Market Breadth

Market Signals

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Pattern Signals

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Sectors

HeadlinesAll Headlines

Economic CalendarAll Events

EarningsAll Earnings

Other Markets

Market information only, not personal advice. Quotes can be delayed. The lists above cover a tracked list of stocks, not every US stock.

What you’ll discover

Three Answers Most Traders Never Get

Illustrations show example data

Your Most Expensive Habit

Oversizing, trading late, cutting winners early. Each habit gets a dollar cost from your own trades, so you know which one to fix first.

Your Best Hour to Trade

P/L broken down by time of day and hold time. Find the window where your setups work, and the one where they don’t.

How Much of Each Move You Keep

Replay shows how far price ran after your exit. See how much of each move the market offered and how much you took home.

Workflow

One Trading Day, Start to Finish

Every page shares the same session date

Step 1Before 09:30 ET

Prepare

Premarket board, economic calendar, sector breadth, and official Fed and SEC releases.

Step 209:30 – 16:00 ET

Trade

Intraday stock scanner, the market board and your session plan, side by side.

Step 3After the close

Review

Today’s trades replayed candle by candle, with the setups you passed on listed beside them.

Step 4Weekly

Research

Performance, behaviour and execution analytics across months of history.

Accounts and P/L

Your Full Trade History, with Nothing to Upload

QuantOS merges brokerage statements, stored API sessions and live activity into one record of round trips. Where sources disagree, the statement wins.

Fees taken from the broker’s own transaction lines
Daily calendar with one-click drill-down to that day’s trades
Opening and closing legs matched into round trips

Daily P/L

Example rows

Date	Trades	Gross	Fees	Net P/L
19-OCT-2026	6	+$1,240.00	$15.84	+$1,224.16
20-OCT-2026	9	−$610.00	$23.76	−$633.76
21-OCT-2026	4	+$385.00	$10.56	+$374.44
22-OCT-2026	11	−$1,090.00	$29.04	−$1,119.04

Behaviour and Discipline

Find the Habits That Cost You the Most

Behaviour scoring works from evidence. Each rule needs a minimum number of matching trades before it gets a score. If the evidence is not there, the rule says so.

Position size, time of day and hold time measured separately
Mistakes linked to the exact trades that broke the rule

Rule Violation Cost

Example figures · 30 days

Size Above Plan−$3,140

Trades After 14:00 ET−$2,080

Holds Under Two Minutes−$1,630

Broker Connection

Every Broker You Trade With, in One Record

Connect each brokerage account you use. QuantOS reads fills, fees and statements through each broker’s official connection and merges them into one journal, so your P/L covers all of your trading.

See Supported Brokers

Multiple brokers and accounts ONE RECORD
Fills and partial fills SYNCED
Fees from transaction lines SYNCED
Brokerage statements SYNCED
Your broker passwords NEVER STORED

Products

Built for Traders Who Want to Know Why

All Features →

Pricing

Simple Plans. Try Everything Free for 14 Days.

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Tier 1

$25USD per month

Trading journal and trade replay
Accounts, P/L and fees
Behaviour and performance analytics

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Tier 2 Everything in Tier 1

$35USD per month

Session planning and setup review
Research workspaces and planning tools
Trading workspace and intraday scanner