# Choose a range width

Tight ranges earn more fees per dollar while the price stays inside, and lose more to arbitrage and re-centring when it doesn't. Wide ranges earn less but need little attention. This playbook finds the width where the balance is best for a pool, and checks it against how you want to manage it.

## 1. Look at every width at once

On the pool page, open **Width vs net edge**. For a $10,000 range kept centred, it shows seven widths side by side, with fees, LVR, re-centring costs and net APR.

Look for:

- **Where net APR peaks.** The star marks it. Tighter than that, costs grow faster than fees.
- **Rebalances per day at that width.** Above a handful a day, the width only works if re-centring is automated.
- **Break-even vol σ\* against today's σ.** The wider the gap, the more a volatility rise the range can absorb.

## 2. Start from a preset

Open **Plan a range**. The presets translate volatility into how often you'll have to act:

| Preset | Width chosen so that a re-centre is expected about |
|---|---|
| Tight | Once a day |
| Standard | Every three days |
| Wide | Once a week |

Pick the preset that matches how often you're willing to re-centre, then adjust the width and watch net APR and σ\*.

## 3. Check the kind of hours you'll be in range

Switch the planner between **Last 24h**, **US session**, **Weekday off-hours** and **Weekend**.

- If fees come mostly from the session, a tight range earns most of its keep in a few hours a day, and also meets the open's jump.
- If off-hours and weekends pay well, often thanks to memes, a range that sits through the night can do well without facing the open.

## 4. See who you'd share fees with

In the planner chart, look at the liquidity your range covers. A tall bar at the price means a large LP is already there; a new position takes a small share of each swap until the price moves off that bar.

**Who you'd sit beside** gives the share held by tight LPs. When tight LPs already hold most of the liquidity at the price, going tight means competing with professionals who re-centre constantly.

## 5. Sanity-check against real positions

Open [open positions](../pool/open-positions.md), filter by width, and sort by APR. If positions at your width are mostly losing, find out why before assuming the model is right. See [Learn from the LPs already in a pool](learn-from-open-positions.md).

## Rules of thumb

- **Wider when volatility is rising.** A vol spike flag or IV well above realised vol means ranges get run over more often.
- **Wider across the open** unless you're actively managing it.
- **Tighter only with automation.** Past a few re-centres a day, the planner's assumption of instant re-centring stops being close to reality.