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WhaleScanr: what it does, what it costs, where it stops
Last checked 2026-09-08
WhaleScanr follows a small roster of Polymarket wallets and sends an alert the moment one of them buys, with the wallet, market, side, size and fill price, plus the Kalshi market where the same event trades.
The roster rule is the product. A wallet joins only while its win rate beats its own average entry price by more than two standard errors, and only while it trades markets Kalshi lists. On 2026-09-08 that was 35 wallets, 1,866 settled positions and $485,033 realized on them.
What it does
Every alert is a print: the wallet, the market, the side, the size and the price it filled at. Every alert carries a Kalshi market, or it is not sent. Free readers see the same alerts on the Alerts page behind a delay; Premium gets them the second the print clears, in a private Discord.
The public record shows the last 100 settled positions per wallet, wins and losses alike, and the recent-alerts panel lists actual sends with their outcomes.
- Roster on 2026-09-08: 35 Polymarket wallets, 1,866 settled positions, $485,033 realized (live counters, they move)
- Built on Kalshi's public anonymous tape and Polymarket's public on-chain data; not owned or operated by either venue
- The site participates in Kalshi's referral programme and says so in its footer
Pricing
Free: the Alerts page with a delay, the roster and the settled record. Premium: $19 per month for real-time Discord pushes.
Venues and data
Signals come from Polymarket wallets; the action is pointed at Kalshi. That is a deliberate design for US traders who cannot use polymarket.com, and it means the roster only includes wallets active in markets Kalshi also lists.
Where it falls short
Thirty-five wallets is a narrow lens, and the two-standard-error screen rewards wallets with long records in sports and esports, which is what the recent alerts show.
A Polymarket print and its Kalshi twin are separate books with separate prices; the alert tells you the wallet's fill, not what Kalshi will give you.
It finds the trade. Executing it means opening Kalshi yourself, or a cross-venue terminal.
Who should use it
US-based Kalshi traders who want a filtered Polymarket signal rather than a firehose, and who will judge it on the public settled record.
Questions about WhaleScanr
How much is WhaleScanr?
$19 per month for real-time Discord alerts. The delayed Alerts page and the settled record are free.
How does WhaleScanr pick wallets?
A wallet is on the roster only while its win rate beats its own average entry by more than two standard errors, and only while it trades markets Kalshi lists.
Does WhaleScanr work with Kalshi?
Yes in the sense that every alert names a Kalshi market to trade on. The tracked wallets themselves are Polymarket wallets.
Does WhaleScanr place trades?
No. It sends alerts; the footer calls them described, never advised.
Trackers find the edge. Calculators size it. Alerts time it.
When it is time to execute, the free Kairos terminal trades Kalshi, Polymarket and Predict.fun from one book.