# No chase after partial fill

After a partial fill, do not let the agent chase the remainder with worse prices, marketables, or “just finish the size” — cancel/leave working only what the written plan allows, confirm residual in the broker UI, and require a fresh GO + quote + slippage bound before any add. Pair with max-slippage-or-cancel, confirm-fills-in-broker-not-chat, confirm-cancel-in-broker-not-chat, no-market-order-without-go, no-averaging-down-without-new-thesis, reject-agent-place-without-quote. Agent Lane does not place trades, hold wallets, or invent broker UI.

Canonical HTML: https://agentlane.net/guides/no-chase-after-partial-fill/

## Answer first

After a partial fill: stop the chase. Confirm filled vs residual in the broker, not chat. Cancel or leave working only what the written plan allows — do not widen, marketable-chase, or “just finish the size.” Any add needs a fresh GO, a fresh quote, and a max-slippage bound in a new review step — and must not be averaging down without a new thesis.

## No chase after partial fill in plain terms

1. **Confirm filled vs residual in the broker** — not chat; see [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md).
2. **Cancel or leave working only per plan** — original limit / written remainder; no widen to chase.
3. **Confirm cancel / working state** — [confirm-cancel-in-broker-not-chat.md](./confirm-cancel-in-broker-not-chat.md).
4. **No “finish the size”** — worse prices and marketables need [no-market-order-without-go.md](./no-market-order-without-go.md) and are usually a chase, not a plan.
5. **Any add = fresh GO + quote + slippage** — new review; [reject-agent-place-without-quote.md](./reject-agent-place-without-quote.md), [max-slippage-or-cancel.md](./max-slippage-or-cancel.md); not [no-averaging-down-without-new-thesis.md](./no-averaging-down-without-new-thesis.md).

## Why chasing the remainder is the failure mode

- **Gap chase on the leftover** — [no-market-order-without-go.md](./no-market-order-without-go.md), [max-slippage-or-cancel.md](./max-slippage-or-cancel.md).
- **Accidental average-down** — [no-averaging-down-without-new-thesis.md](./no-averaging-down-without-new-thesis.md), [one-risk-unit-per-idea.md](./one-risk-unit-per-idea.md).
- **Chat said filled / cancelled** — [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md), [confirm-cancel-in-broker-not-chat.md](./confirm-cancel-in-broker-not-chat.md).
- **Urgency skips the card** — [never-skip-review-before-place.md](./never-skip-review-before-place.md).

## Shield stack

1. [reject-agent-place-without-quote.md](./reject-agent-place-without-quote.md) — price freshness in the review step.
2. [no-market-order-without-go.md](./no-market-order-without-go.md) — order-type GO; default limit/last-look.
3. [max-slippage-or-cancel.md](./max-slippage-or-cancel.md) — pre-place fill-quality bound; breach means cancel, not chase.
4. [never-skip-review-before-place.md](./never-skip-review-before-place.md) — human gate on the original ticket.
5. [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md) — venue truth on what printed.
6. No chase after partial fill (this page) — remainder rule; cancel/leave working per plan; no chase; fresh GO before any add.
7. [confirm-cancel-in-broker-not-chat.md](./confirm-cancel-in-broker-not-chat.md) — verify cancel/working residual in the venue UI.
8. [no-averaging-down-without-new-thesis.md](./no-averaging-down-without-new-thesis.md) — add-size thesis gate if you do add.

## How to run no chase after partial fill

1. Confirm filled vs residual in the broker — [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md); no invented UI.
2. Cancel or leave working only per written plan — [name-the-strategy-before-connect.md](./name-the-strategy-before-connect.md); do not widen to chase.
3. Confirm cancel / working state afterward — [confirm-cancel-in-broker-not-chat.md](./confirm-cancel-in-broker-not-chat.md).
4. Block chase / finish-the-size — [no-market-order-without-go.md](./no-market-order-without-go.md).
5. Any add: fresh GO + quote + slippage at review — [never-skip-review-before-place.md](./never-skip-review-before-place.md), [reject-agent-place-without-quote.md](./reject-agent-place-without-quote.md), [max-slippage-or-cancel.md](./max-slippage-or-cancel.md), [no-averaging-down-without-new-thesis.md](./no-averaging-down-without-new-thesis.md), [size-from-sleeve-not-from-hope.md](./size-from-sleeve-not-from-hope.md), [one-risk-unit-per-idea.md](./one-risk-unit-per-idea.md); large tickets: [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md).
6. Journal overrides that chased the remainder — [journal-every-override.md](./journal-every-override.md), [revoke-before-debug.md](./revoke-before-debug.md).

## Practical checklist

- Filled vs residual confirmed in broker UI — not chat.
- Remainder action matches written plan — cancel or leave working at original terms.
- No widen / marketable chase to “finish the size.”
- Cancel / working state confirmed in broker — not chat.
- Any add needs fresh GO + quote + max-slippage in a new review step.
- Not averaging down without a new thesis.
- Chat urgency is not a remainder plan.
- Review before place still on for any add.
- Overrides journaled if anyone chased the residual.
- Official paths only — no invented broker UI.

Related: [No place while unconfirmed fill](./no-place-while-unconfirmed-fill.md), [One order per idea until fill](./one-order-per-idea-until-fill.md), [Reject duplicate place same thesis](./reject-duplicate-place-same-thesis.md), [One cancel, one confirm](./one-cancel-one-confirm.md), [max-slippage-or-cancel.md](./max-slippage-or-cancel.md), [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md), [confirm-cancel-in-broker-not-chat.md](./confirm-cancel-in-broker-not-chat.md), [no-market-order-without-go.md](./no-market-order-without-go.md), [no-averaging-down-without-new-thesis.md](./no-averaging-down-without-new-thesis.md), [reject-agent-place-without-quote.md](./reject-agent-place-without-quote.md), [never-skip-review-before-place.md](./never-skip-review-before-place.md), [one-risk-unit-per-idea.md](./one-risk-unit-per-idea.md), [size-from-sleeve-not-from-hope.md](./size-from-sleeve-not-from-hope.md), [confirm-buying-power-before-place.md](./confirm-buying-power-before-place.md), [dry-run-before-first-live-place.md](./dry-run-before-first-live-place.md), [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md), [journal-every-override.md](./journal-every-override.md).

## FAQ

**What does no chase after partial fill mean?**
After a partial fill, do not let the agent chase the remainder with worse prices, marketables, or “just finish the size.” Cancel or leave working only what the written plan allows; confirm residual in the broker UI; require a fresh GO + quote + slippage bound before any add. Pair with max-slippage-or-cancel, confirm-fills / confirm-cancel in broker, no-market-order-without-go, no-averaging-down-without-new-thesis, reject-agent-place-without-quote.

**Do I invent a partial-fill or residual broker UI?**
No. Official venue fills, working-orders, and cancel screens and your written sleeve rules. Agent Lane does not invent UI or read your broker for you.

**Does this replace max slippage or cancel or no averaging down?**
No. Max slippage or cancel is the pre-place fill-quality bound; no averaging down is the add-size thesis gate; confirm fills / confirm cancel are venue-truth; no market order without GO is order-type; reject without quote is price freshness; this page is the post-partial remainder rule (do not chase leftover size; fresh GO + quote + slippage before any add). You need the stack.

## Sources

- Canonical HTML: https://agentlane.net/guides/no-chase-after-partial-fill/
- Related shelf: https://agentlane.net/resources/
- Site index: https://agentlane.net/llms.txt

Agent Lane publishes checklists. We do not place trades, hold wallets, invent broker UI, or read your order tickets.