Same dollars, not the same risk
A coin that moves three times as much as BTC carries three times the risk for the same dollars. Size by dollars, and your most volatile coin ends up carrying the most risk.
Put a number on your beliefs.Rollie handles the trading.
Pick any markets and say how you feel about each, from −10 (short) to +10 (long). Rollie sizes each one by how much it swings and what it moves with, and keeps your book on target as markets change.
Launching soon on HyperliquidSave your book to join the waitlist and get your card.Share your card. Friends who join through it move you up. Claim your handle, stack referrals and paper trade, all before we go live.
Your bookgo on, drag a view
BTC+5
ETH−3
HYPE+9
SOL+2
DOGE−8
Riskvol 50% a year
±$150 on a typical dayRollie sizedon $10,000
marketdollars
BTC$4,510
ETH−$2,060
HYPE$4,470
SOL$1,360
DOGE−$5,030
Gross exposure1.7×your amountsized at 50% vol on $10,000
Positions2.5independentin your book, counting what moves together
Biggest risk33%HYPEshare of the book's risk
Net exposure+0.3×net longlongs minus shorts, as a share of your amount
You have the beliefs.Sizing them is the hard part.
On an exchange, every belief becomes a coin and a dollar amount, picked one at a time. That’s where most trading goes wrong.
Five longs, one bet
BTC, ETH and SOL move together most days, so five crypto longs act like about 1.3 bets. When the market turns, they all turn.
The book drifts
Prices and volatility change every week, so a book sized right on one day is off by the next. Rebalancing ten positions by hand is work almost nobody does.
You set the numbers.Rollie does the sizing.
Follow the $10,000 example book from the top of the page through each step.
YOU
Say how you feel
Pick the markets you have a view on, rate each from −10 (short) to +10 (long), and pick your risk, which is how much the whole book swings.
BTC
+5
ETH
−3
HYPE
+9
SOL
+2
DOGE
−8
Risk · vol 50% a year
1
Sizes by how much each coin swings
Rollie turns each number into dollars based on how much the coin swings (its volatility), so +8 on BTC gets about three times the dollars of +8 on FARTCOIN. The same number means the same risk on any coin. Your risk level then scales the whole book up or down.
BTC$901 a point
ETH$687 a point
HYPE$496 a point
SOL$681 a point
DOGE$629 a point
+8 on BTC ≈ 3.2× the dollars of +8 on FARTCOINdollars per point at 50% risk2
Counts what moves together
Coins that move together act like one position, so Rollie measures how yours have moved and counts the independent bets in your book. Five crypto longs count as about 1.3. More independent bets let each one be bigger for the same risk. A short can offset a long, so +8 SOL with −6 ETH carries about half the risk of +8 SOL alone.
five longs1.3 bets
your book · 2.5 independent×1.6 size
+8 SOLrisk 100%
+8 SOL · −6 ETHrisk 58%
3
Holds the position your number sets
Your number sets the position, so there’s no entry or exit to time. Move SOL from +6 to +8 and Rollie adds to it; set it to 0 and Rollie closes it.
SOL +6 → +8add $1,350
SOL +8 → 0close −$5,390
4
Keeps your book on target
As prices and volatility change, the right size for each number changes too. Rollie checks daily and trades only when a position is more than 10% off its target, so small moves don’t churn your account.
target vs position±10%
checked daily10% band
OUT
Your book, sized · $10,000
BTC+5$4,510
ETH−3−$2,060
HYPE+9$4,470
SOL+2$1,360
DOGE−8−$5,030
Don’t give your agent a trading terminal.Give it a dial.
An agent’s edge is its judgement on which markets, which way and how sure. Rollie runs everything after that the same way every time, so an agent’s results come from its calls, not from how it sized or traded them.
Guardrails you don’t have to write
Sizing by risk is a guardrail on its own. More volatile coins get fewer dollars, coins that move together count as one bet, and the whole book stays at the risk you set. The most an agent can say about a market is +10, so it can’t place a giant order by mistake or pile into five correlated longs, and you never have to write a rule to stop it.
An interface agents already understand
Agents already rank things and weigh how likely they are, and a view from −10 to +10 is exactly that, one number per market. The agent never has to deal with order types, position management or risk code.
Easy to measure, easy to compare
Every agent’s views are sized and traded by the same rules, so its record shows its calls and nothing else. That makes it easy to evaluate an agent, compare two, or test a new prompt against the old one.
Your money neverleaves your account.
Rollie never holds your funds. It trades your own Hyperliquid account with a key you approve, and that key can’t withdraw.
Your own Hyperliquid account
Your funds stay in your Hyperliquid account. You deposit and withdraw there as usual, and connect it to Rollie when you take your book live.
Can trade, can’t withdraw
You approve a trading-only key, which Hyperliquid calls an agent wallet. It can place and cancel orders but can’t withdraw or send funds anywhere. Revoke it on Hyperliquid at any time.
Stop when you want
Set a market to 0 to close it, or pause the whole book.
Built on Keel, a systematic trading platform for Hyperliquid.
Your calls, run likea systematic book.
Everything after the call runs on rules you can check.
Run a whole book, not one trade
Ten markets, long and short, take no more work than one. Each holds the exposure your number sets for as long as you keep it, with no entry or exit to time.
Trade less, hold through the swings
Most turnover in a discretionary account is getting in and out, not changing your mind. Rollie trades only when your number or the market moves enough, so the book turns over far less, and a position sized for its risk is easier to hold through a swing.
A clean read on your calls
On an exchange, P&L mixes the call with its size and timing, so a good call sized badly reads as a bad one. On Rollie every view is sized and traded by the same rules, so your record shows what you predicted against what each market did next, adjusted for how much it usually moves. Did your +8s beat your +3s? Did your shorts fall further than the market? It takes a few months of changes before the numbers separate skill from luck.
markets you rated +8+0.6
markets you rated +3+0.2
your shorts−0.9
rest of the market−0.3
Spec sheet
- Input
- −10 to +10 per market, long or short
- Markets
- Native Hyperliquid perps; later HIP-3 markets, including equities
- Sizing
- Volatility-targeted per coin; your risk level sets the target, 10% to 150% a year
- Diversification
- Scaled by the book’s independent bets, from shrunk 180-day correlations, with a short counted as a hedge
- Rebalancing
- Checked daily; a position trades once its target has moved more than 10%
- Orders
- Market orders today; TWAP and other ways to smooth an entry are planned. Hyperliquid’s $10 minimum applies to each order
- Fees
- $6 for every $10k traded
- Record
- Every change with its time, and your reason if you add one
Runs on
Keel, a systematic trading platform for Hyperliquid
Keel, a systematic trading platform for HyperliquidPost a call. Friends roll with it.
Share any change as a card with your number and your reason. A friend who taps Roll with adds that view to their own book, sized for their account, and confirms the trade themselves. It copies the view once and doesn’t follow your later changes.
@jon changed a view
SUI+2→−6
“Unlocks next week and funding just flipped.”@maya’s book
SUI−6
−$840 · confirmedQuestions about Rollie and Hyperliquid
Numbers as of 5 October 2026
What is Rollie?
Rollie is a portfolio manager for Hyperliquid perps. You rate any markets from −10 (short) to +10 (long), and Rollie sizes each position by its volatility and how it moves with the rest of your book, then keeps the book on target as markets change. Rollie is launching soon.
Is Rollie a trading bot?
No. Rollie doesn’t pick trades or follow signals; you make every call as a number from −10 to +10. Rollie sizes those calls, holds them and rebalances them by fixed rules you can check.
Can an AI agent use Rollie?
Yes, Rollie is built for it. An agent sets views from −10 to +10, and Rollie sizes, holds and rebalances them on your own Hyperliquid account. A Rollie API and MCP server are coming.
Can I try Rollie without connecting a wallet?
Yes. You can build and save a Rollie book without a wallet. You connect your Hyperliquid account only when you take your book live, and nothing trades before that.
When does Rollie launch?
Rollie is launching soon on Hyperliquid. Build and save a book to join the waitlist; when you’re in, you choose if and when to take your book live.
How much money do I need to start with Rollie?
Hyperliquid’s smallest order is $10, so the floor depends on how many markets you rate and the risk you set. The builder shows the dollars for every number before you go live.
Which markets can Rollie trade?
Native Hyperliquid perps at launch, and HIP-3 markets, including equities, later.
How much does Rollie cost?
Building and saving a book is free. Live, it is $6 for every $10k traded.
Can I keep trading in the same Hyperliquid account?
Rollie manages every position in your book’s markets and leaves other markets alone. An account used only for Rollie avoids overlap.
How should I size crypto positions?
Size each position by risk, meaning how much the coin moves. As of 5 October 2026, HYPE moves about 1.8 times as much as BTC, so the same risk in HYPE takes about half the dollars. In Rollie, you rate each market from −10 to +10 and Rollie sizes it from that rating and the coin’s volatility.
What is volatility targeting?
Volatility targeting sizes each position so it carries a set amount of risk, with more dollars in calmer assets and fewer in more volatile ones, re-sized as volatility changes. It is how systematic funds size trend-following books. In Rollie, your risk level sets the target, from 10% to 150% a year.
How much leverage should I use on Hyperliquid?
Pick the risk you want first and let the leverage follow from it. Hyperliquid allows up to 40× on BTC, and 5× on a coin that moves twice as much as BTC carries twice the risk of 5× on BTC. In Rollie your risk level sets the size of the whole book, 10% to 150% a year.
How do I diversify a crypto portfolio when everything follows Bitcoin?
Count how many independent bets you hold, then add positions that move differently, including shorts. Over the 180 days to 5 October 2026, five equal-risk longs in BTC, ETH, SOL, DOGE and HYPE behaved like about 1.3 independent bets, with an average correlation of 0.70 between them. Rollie measures these correlations and scales your book for them.
What is a Hyperliquid agent wallet, and can it withdraw?
Rollie never holds your funds. An agent wallet, which Hyperliquid also calls an API wallet, is a key you approve to trade for your account. It can place and cancel orders, but withdrawals and transfers to another address need your own wallet’s signature, and an approval lasts up to 180 days. Rollie trades through an agent wallet you approve, and you can revoke it on Hyperliquid at any time.
How often should I rebalance a crypto portfolio?
Rebalance a position once its target has moved past a set threshold, and set the threshold high enough that fees on small corrections stay low. Changes in volatility move the target too. Rollie checks daily, even when you haven’t changed anything, and trades a position once its target has moved more than 10%.
How do I know if I’m a good trader or just lucky?
Judge your calls separately from their size and timing, over many of them. P&L combines the call with its size and timing, so a correct call with a small position can make less than a wrong call with a large one. In Rollie every view is a number from −10 to +10 traded by the same rules, and your record shows whether the markets you rated higher did better. It takes a few months of changes before the numbers separate skill from luck.
How do you roll?
Start with the markets you already have a view on, and put a number on each.
Launching soon on HyperliquidSave your book to join the waitlist and get your card.Share your card. Friends who join through it move you up. Claim your handle, stack referrals and paper trade, all before we go live.