Frequently asked questions

MirrorFill is a futures trade copier. One leader account's fills mirror in real time onto the follower accounts you connect, using delta-exact net-position mirroring: after every fill, the engine computes each follower's target position and orders only the difference. See the leader/follower model.

No. MirrorFill mirrors trades between accounts you own and connect yourself — typically one leader and several prop-firm accounts. It is a tool, never a broker, fund manager, or signal provider. See leader and follower accounts.

You need login credentials for a supported platform (Rithmic, Tradovate, or Volumetrica) and at least two accounts: one to lead and one to follow. Most traders have a working setup in about ten minutes. Follow the quickstart.

No. The copy engine runs server-side, so copying continues after you close the browser or your computer sleeps. Your device is only a dashboard. See what happens on disconnect.

Run the pre-flight checklist: start the copier with one follower at 1x, place a small order far from the market, and confirm the follower mirrors it before you trade normal size. See the pre-flight checklist.

MirrorFill is a responsive web app that works in any modern browser, with a dedicated phone layout (drawer navigation and a bottom tab bar). There is no native iOS or Android app. See the app tour.

It copies futures fills only, on a fixed registry of CME, CBOT, NYMEX, and COMEX instruments — no stocks, options, or crypto. It also never copies instruments on your block-list, never attaches its own stop or target brackets, and never re-chases quantity that was written off after an order expired. See known limitations.

Yes. Import your trades as CSV — there is a generic template, and Tradovate exports are detected automatically. Every journal feature works on imported data. See importing trades from CSV.

Brokers & connections

Rithmic, Tradovate, and Volumetrica (dxFeed). NinjaTrader, TradingView, MT4/MT5, and TopstepX/ProjectX are not supported. See known limitations.

MirrorFill copies at the platform level: if your firm's accounts run on Rithmic, Tradovate, or Volumetrica, they connect like any other account on that platform. Firms on TopstepX/ProjectX (such as Topstep) do not connect. The policy matrix lists common firms and their platform stacks.

On the Accounts page, add a connection with your Rithmic username and password, then pick your system — the Rithmic server environment your login belongs to, usually named after your firm — and a gateway. See Rithmic systems and gateways explained.

The usual causes: the wrong system selected for that login, credentials that belong to a different environment, or the login already in use in another platform session — Rithmic allows one session per login. See Rithmic systems and gateways and testing a connection.

Not on the same login. Rithmic and Tradovate each allow one session per login, so signing into another platform with the credentials MirrorFill is using can knock the copier's connection off — and vice versa. Use separate logins where your firm offers them. See Tradovate session conflicts.

You never choose. MirrorFill detects whether a Tradovate login is demo or live when it tests the connection and stores the result. See connecting Tradovate.

No. MirrorFill connects with your normal Tradovate username and password; no API subscription or add-on purchase is required. See connecting Tradovate.

Credentials are encrypted at rest and write-only: the API never returns a stored password, and leaving the password field empty when you edit a connection keeps the stored one. Support will never ask for it. See account security.

Everything that depended on it is removed: its follower rules, its role as a group leader (the group itself survives, empty), and its risk settings. The copier must be stopped first — deletion is refused while it runs. See managing multiple connections.

Copying behavior

Each follower gets either a multiplier (leader net position times the multiplier, rounded half-away-from-zero) or an exact quantity (the follower always holds N contracts in the leader's direction). See sizing: multipliers and exact quantity.

Tick the Cross Order box on a follower and the engine maps between mini and micro while keeping the expiry: ES/MES, NQ/MNQ, RTY/M2K, YM/MYM, CL/MCL, GC/MGC. Combine it with a multiplier — 10 MES per ES, for example. See mini/micro symbol mapping.

Yes. Reverse copy makes a follower take the opposite side of every leader position — leader long 2, follower short its sized equivalent. See reverse copy mode.

Yes. Each copy group is one leader account, one leader instrument, and its own follower roster, running on its own engine. An account can lead only one group. See copy groups and multiple leaders.

A marketable limit by default: a limit order priced two ticks through the leader's fill. It fills like a market order in normal conditions but caps slippage, and it works in environments where plain market orders are rejected. See market vs marketable-limit orders.

Followers mirror the leader's own exits: when your stop or target fills on the leader, the followers close with it, delta-exact. MirrorFill does not attach synthetic stop-loss or take-profit brackets of its own. See how exits copy.

Partial fills stay correct by construction — the engine only ever orders the remaining difference. If you set an order expiry and a follower order times out unfilled, the missed quantity is written off, deliberately never chased at market; the debt clears when the leader goes flat or reverses. See order expiry and write-offs.

Each follower sends its own real order into a live market, so it fills at whatever price is available when it arrives. Positions stay delta-exact; prices and per-account P&L can differ. See market vs marketable-limit orders.

Nothing you have to configure. Copy rules are keyed to the instrument root (ES, NQ), never a contract month, so the roll needs no settings change. The app shows a roll warning banner and an "Old contract" badge on positions in the outgoing month. See contract rollover.

Changing group structure mid-flight could misroute fills, so structural edits require a stop: stop, edit, start again. The Follow switch and pause-all still work while the copier runs. See editing rules while the copier runs.

Risk & safety

It closes every position at market — the leader's as well as the followers' — pauses copying until you click Resume, and schedules a re-sweep to catch late fills. It is one click by default; an "ask before Flatten all" confirmation is opt-in on the Risk Management page. See the Flatten all kill switch.

No. Stop halts copying — no new follower orders go out — but every open position stays exactly where it is. Flatten all is the control that closes positions. See engine controls explained.

Set a per-account daily loss limit or profit target on the Risk Management page. Each is checked against the account's live day P&L, which already includes open P&L, and fires at most once per CME trading day. No P&L data means the limit never fires — missing data is never treated as zero. See daily loss limits and profit targets.

Flatten & lock locks the account first, closes its positions, cancels its resting orders, and keeps re-sweeping until it is flat. Alert only notifies you and places no orders. See daily loss limits and profit targets.

At the CME session roll, 17:00 Chicago time. The previous session's P&L is discarded at the roll, so a limit cannot re-fire on stale numbers. Manual lockouts stay until you unlock them. See risk locks and the daily reset.

A leader breach is a per-group kill switch: that group flattens and its copying is disabled until you click Resume. Other groups keep running. See daily loss limits and profit targets.

Nothing changes — the engine runs server-side, so your browser going offline does not interrupt copying. If the engine itself loses a broker connection, it auto-reconnects with backoff, re-reads positions from the broker, resubscribes, and reconciles. See what happens on disconnect.

Positions are read back from the broker on startup, and every fill is tracked by id, so nothing is copied twice. The engine picks up where the accounts actually are. See restarting mid-position.

Prop firms & compliance

Many allow copying between accounts you own, and some restrict or forbid it — policies differ by firm and change without notice. Check your firm's own rules before copying on a funded or evaluation account; no tool can promise a firm's approval. See do prop firms allow trade copiers.

Our policy matrix summarizes common firms' copying rules, each entry with a last-verified date and a link to the firm's own page — which is always the binding source. See the prop firm policy matrix.

You are. Your firm's rules bind you as the trader, whatever tool placed the order. MirrorFill's risk tools — daily loss limits, max-contract clamps, block-lists, Flatten all — reduce the risk of a breach but do not remove your responsibility. See who is responsible for a breach.

Some firms run anti-mimicry checks and can flag identical timing and sizing across accounts at different firms. Varied sizing and knowing each firm's policy reduce that risk. See copying across firms and anti-mimicry.

The copier mirrors whatever the leader does, so one trade inside a firm's restricted news window can breach every linked account at once. If any linked firm restricts news trading, stop the copier or sit out the window on the leader. See news windows and copying.

Reverse copy makes it mechanically possible, but many firms restrict holding opposite positions across accounts — sometimes even across firms. Check the rules of every linked firm before enabling it. See hedging between accounts.

Journal & Weekly Review

Copier fills mirror into journal trades automatically on every read — there is no import button to press. Trades from outside the copier come in by CSV. See how trades reach your journal.

Yes, under Journal → Manage Data. There is a generic template, and Tradovate exports are detected automatically. See importing trades from CSV.

The journal dashboard shows profit factor, win rate, day-win percentage, average win and loss, long/short split, cumulative P&L, drawdown, P&L by hour, weekday, and tag, and a monthly calendar. Each is defined in the dashboard metrics glossary.

A written review of your week's trading, available on Pro and above, generated Saturday around noon Chicago time for the week that just closed. The software computes every number; the model only writes the narrative, and it is an automated summary of your own data — never financial advice. See the Weekly Review explained.

Weeks with fewer than 10 closed trades ship as numbers-only — there is not enough data for a fair written narrative. Every figure is still there. See the Weekly Review explained.

The weekly e-mail is optional, and every one carries a one-click unsubscribe link that works straight from your mail client. See the Weekly Review e-mail and unsubscribe.

Billing & account

Yes, a card is required at signup, and each account gets one trial ever. You are not charged until the 7 days end, and you can cancel before then. All plans are monthly; there is no annual plan. See the trial and checkout.

Total accounts: distinct leaders plus distinct enabled followers, across all groups. An account counts once no matter how many instruments it mirrors. Starter covers 5 (1 leader + 4 followers), Pro 25, Scale unlimited. See plans and account limits.

Yes. A follower switched Off is remembered settings, not a working account, so it stops counting against your cap. See plans and account limits.

Through the Stripe Customer Portal, reached from Settings — card changes, plan changes, and cancellation all live there. A downgrade never deletes anything; it just blocks the next save that would exceed the smaller cap. See managing your subscription.

You get a payment-failed e-mail and a 3-day grace period to update your card in the Customer Portal before access is affected. See payment failures and the grace period.

A code in your signup link is applied at Stripe checkout when we recognize it. An unknown code is simply ignored — checkout still proceeds, and you can use Stripe's own promotion field instead. A bad code never blocks a checkout. See creator and promo codes.

Refunds are handled under the published policy — the trial exists so you can evaluate everything before the first charge. Read the refund policy.

Both live in Settings: change your password there, or use "sign out everywhere" to end every session at once. Sessions also expire after 14 days of inactivity. See account security.

Troubleshooting

In order: the engine is started (the command strip says copying is running), the connections on the Accounts page are green, the follower's Follow switch is On, the instrument is not on your block-list, and the account is not risk-locked. See the trades-not-copying checklist.

It can be. Some antivirus suites intercept secure connections ("SSL scanning"), which can make a valid login look like a network failure. Try adding an exception or pausing the interception, then test again. See connection failures and antivirus SSL.

The engine noticed the follower's position drifted from its target and is correcting it. Reconciliation runs only in a quiet window and skips accounts with a resting order, locked accounts, and paused rules — so amber usually clears on its own. See how drift gets fixed.

The broker or firm refused the order — common causes are insufficient margin, a closed market, or a firm-side restriction. The alerts bell shows the broker's reject text so you can see the exact reason. See rejected orders and what they mean.

Sign-in throttles after repeated failed attempts. Wait briefly and try again, or use the password reset link if you are unsure of the password. See login problems and rate limits.