Practice on paper.
Trade live with zero fees.
Orca is the trading desk for prediction markets. Copy whale trades with a paper bankroll, backtest any strategy, and place real orders on Polymarket and Kalshi without paying Orca a cent.
98635.0¢35.1¢$346.61+$1.61 (+0.5%)
1,0798.9¢17.1¢$183.97+$88.28 (+92.3%)
2,8258.0¢6.2¢$173.74−$51.26 (−22.8%)
Learn. Practice. Go live.
Step 1
Learn the market on Polywhaler
Polywhaler streams every whale trade on Polymarket as it lands. Study the flow, insider scores, and the smart money leaderboard until you know exactly whose trades are worth following.
Explore Polywhaler
Step 2
Practice with a paper portfolio
Open a paper portfolio on Orca and trade the same markets with a fake bankroll on your exchange of choice. Copy whales, run backtests, and let the equity curve prove your strategy works, with zero risk.
More on paper tradingStep 3
Go live when you're ready
Connect your Polymarket or Kalshi account and run the same strategy with real funds. Every order is signed by you, settles on the exchange, and carries zero Orca fees. Make money.
More on live tradingTwo ways to trade.
Start with a fake bankroll against live prices. Copy the whales that actually win, backtest any strategy over the past year, and watch your P&L tick exactly like a real account. When the numbers convince you, go live in one click. Free forever.
Connect your Polymarket or Kalshi account and place real orders from the desk you practice in. Every order is signed by you, settles on the exchange, and carries 0% Orca fees. Non-custodial — your keys, your funds. Included with Pro.
Replay any strategy before you risk a dollar.
Copy a whale with a fake bankroll and see exactly how you'd have done. Orca replays every trade they made over your window, tick by tick. Your first backtest needs no account.
Start free. Upgrade when you're ready.
OrcaEverything you need to start tracking whale flow on Polymarket.
- Live whale trade feed
- Add whales to your watchlist
- Whale leaderboard
- Suspicious events feed
- Interactive market charts
Billed annually (save 45%)
- Full access to Orca
- Custom alert rules
- Full whale profile data
- Whale overlay, candles & multi-compare
- The Prophet daily newspaper
Billed annually (save 50%)
- REST API (10k req/day)
- Full historical trade data
- Real-time webhooks
- Insider & cluster scores via API
- Bulk CSV / JSON / Parquet exports
Compare all features
| Feature | Free | Pro | Quant |
|---|---|---|---|
| |||
| Live whale trade feed | |||
| Add whales to your watchlist | |||
| Whale leaderboard | |||
| Suspicious events feed | |||
| Interactive market charts | |||
| World map view | |||
| Price predictions & history | |||
| Coordinated whale buying markets detection | – | ||
| Whale performance graph | – | ||
| Current whale positions | – | ||
| Best/worst whale trades | – | ||
| Whale trading patterns | – | ||
| Smart money breakdown | – | ||
| Top whales per event | – | ||
| Map clusters & timeline | – | ||
| Deep trade terminal | – | ||
| Custom alert rules | – | ||
| Whale overlay, candles & multi-compare | – | ||
| The Prophet daily newspaper | – | ||
| CSV / JSON export | – | ||
| REST API (10k req/day) | – | – | |
| Full historical trade data | – | – | |
| Real-time webhooks | – | – | |
| Insider & cluster scores via API | – | – | |
| Bulk CSV / JSON / Parquet exports | – | – | |
Orca | |||
| Single paper trading portfolio | |||
| Whale copy trading simulation | |||
| Quick whale backtest | |||
| Unlimited paper trading portfolios | – | ||
| Live trading portfolios integrated with Kalshi and Polymarket | – | ||
Frequently asked questions
Does live trading really have zero fees?
Yes. Orca charges 0% on every live order. You connect your own Polymarket or Kalshi account, and each trade settles on the exchange at its normal price with no extra Orca fee. Live trading is included with Pro.
How do I connect my account to trade live?
On Pro, link your Polymarket wallet or Kalshi account once. Orca then lets you place real orders from the same interface you paper trade in. Every order is signed by you and non-custodial, so your funds never leave your control.
Can you paper trade on Polymarket?
Polymarket has no built-in practice mode, so Orca adds one. You trade with a fake bankroll against live Polymarket and Kalshi prices, and your portfolio tracks every position, gain, and loss exactly as a real account would.
How do I backtest a strategy?
Open Quick Backtest, add a whale or market, and pick a window from 30 days to a year. Orca replays every trade in that period and shows the equity curve, win rate, and every position. Your first backtest needs no account.
Can I copy Polymarket whales?
Yes. Follow any whales you like and Orca mirrors each new trade they make into your portfolio at a fixed dollar amount you choose, so one big bet from a whale never wipes you out.
Is Orca free?
Yes. Quick backtests need no account, and a free account includes one paper portfolio plus the live whale tracker and leaderboard. Pro unlocks live trading and unlimited portfolios.