# No averaging down without a new thesis

Do not let an agent add size to a losing position just because the price is lower — require a fresh written thesis, size check against the sleeve ceiling, and review gate before any add. Pair with name-the-strategy-before-connect, never-skip-review-before-place, cap-daily-loss-before-session, one-strategy-one-sleeve, two-person-rule-for-large-places. Agent Lane does not place trades, hold wallets, or invent broker UI.

Canonical HTML: https://agentlane.net/guides/no-averaging-down-without-new-thesis/

## Answer first

A lower mark is not a new plan. Do not let the agent average down on a loser unless you have a fresh written thesis, the add still fits the sleeve ceiling and loss stop, and review (plus two-person rule when size is large) has passed.

## Why averaging down on price alone is the failure mode

- **Cheaper ≠ thesis** — [name-the-strategy-before-connect.md](./name-the-strategy-before-connect.md).
- **Sleeve and loss cap get eaten** — [one-strategy-one-sleeve.md](./one-strategy-one-sleeve.md), [cap-daily-loss-before-session.md](./cap-daily-loss-before-session.md), [fund-session-ceiling.md](./fund-session-ceiling.md).
- **Review has nothing honest to check** — [never-skip-review-before-place.md](./never-skip-review-before-place.md), [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md).

## What it means

1. Fresh written thesis — change, invalidation, fit to named plan; not “cheaper.”
2. Size vs sleeve ceiling — [fund-session-ceiling.md](./fund-session-ceiling.md), [cap-daily-loss-before-session.md](./cap-daily-loss-before-session.md), [one-strategy-one-sleeve.md](./one-strategy-one-sleeve.md).
3. Review gate on the add — [never-skip-review-before-place.md](./never-skip-review-before-place.md); large → [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md).
4. Venue truth — [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md).
5. Log the override — [log-session-end-checklist.md](./log-session-end-checklist.md), [receipt-log-after-session.md](./receipt-log-after-session.md).

## Shield stack

1. [name-the-strategy-before-connect.md](./name-the-strategy-before-connect.md) — written plan.
2. [one-strategy-one-sleeve.md](./one-strategy-one-sleeve.md) — isolate cash and stops.
3. [fund-session-ceiling.md](./fund-session-ceiling.md) + [cap-daily-loss-before-session.md](./cap-daily-loss-before-session.md).
4. No averaging down without a new thesis (this page) — add-size gate on a loser.
5. [never-skip-review-before-place.md](./never-skip-review-before-place.md) + [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md).
6. [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md) + [log-session-end-checklist.md](./log-session-end-checklist.md).

## How to run no averaging down without a new thesis

1. Keep the named plan visible — [name-the-strategy-before-connect.md](./name-the-strategy-before-connect.md).
2. Treat a lower mark as not a thesis — pause agent add/average/scale-in on a loser.
3. Write the new thesis — change, invalidation, fit; map to this sleeve — [one-strategy-one-sleeve.md](./one-strategy-one-sleeve.md).
4. Check size against the sleeve ceiling — [fund-session-ceiling.md](./fund-session-ceiling.md), [cap-daily-loss-before-session.md](./cap-daily-loss-before-session.md); no invented UI.
5. Pass review before place — [never-skip-review-before-place.md](./never-skip-review-before-place.md), [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md).
6. Confirm in venue UI; log the override — [confirm-fills-in-broker-not-chat.md](./confirm-fills-in-broker-not-chat.md), [log-session-end-checklist.md](./log-session-end-checklist.md); travel: [kill-switch-before-travel.md](./kill-switch-before-travel.md).

## Practical checklist

- Strategy named; original plan visible.
- No price-alone adds.
- Fresh thesis written.
- Sleeve ceiling check passed.
- Loss stop respected after the add.
- Review on; two-person if large.
- Venue truth for size/fills.
- Override logged on session close.
- Official paths only — no invented broker UI.

Related: [No scale-in without GO](./no-scale-in-without-go.md), [Reject duplicate place same thesis](./reject-duplicate-place-same-thesis.md), [Write invalidation before entry](./write-invalidation-before-entry.md), [No chase after partial fill](./no-chase-after-partial-fill.md), [one-risk-unit-per-idea.md](./one-risk-unit-per-idea.md), [name-the-strategy-before-connect.md](./name-the-strategy-before-connect.md), [never-skip-review-before-place.md](./never-skip-review-before-place.md), [cap-daily-loss-before-session.md](./cap-daily-loss-before-session.md), [one-strategy-one-sleeve.md](./one-strategy-one-sleeve.md), [two-person-rule-for-large-places.md](./two-person-rule-for-large-places.md), [fund-session-ceiling.md](./fund-session-ceiling.md).

## FAQ

**What does no averaging down without a new thesis mean?**
Do not add size to a loser because price is lower. Require fresh written thesis, sleeve ceiling check, and review gate. Pair with name-strategy, never-skip-review, cap-daily-loss, one-strategy-one-sleeve, two-person-rule.

**Do I invent a broker average-down UI?**
No. Official venue tickets and your notes only. Agent Lane does not invent UI.

**Does this replace naming, sleeve, loss cap, or review?**
No. Plan, isolation, loss stop, and gates are different brakes. This page is the add-size rule on a loser. You need the stack.

## Sources

- Canonical HTML: https://agentlane.net/guides/no-averaging-down-without-new-thesis/
- 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 write your thesis.