Five days ago we announced that Kalshi support was coming to 0xInsider. Today, the first piece is live: every large Kalshi trade now streams into your terminal in real time.
Open the whale trades terminal, and you'll see Kalshi trades alongside Polymarket trades in the same feed. Each row shows the platform, trade size, market, outcome, and direction. Filter by platform to isolate one exchange or watch both at once.
TIME TYPE PLAT SIDE MARKET USD TRADER ───────────────────────────────────────────────────────────────────────────────────── 2m ago WHL PM BUY Will BTC hit $150K by July? $42,100 0xc4a2…f8b1 3m ago WHL KSH BUY Fed rate cut in March? $58,300 Anonymous ? 5m ago WHL PM SELL Trump wins 2026 midterms? $31,750 polywhale.eth 7m ago WHL KSH BUY US recession by Q3 2026? $27,400 Anonymous ? 9m ago WHL PM BUY ETH above $10K by Sept? $19,800 degen_alpha 11m ago WHL KSH SELL Next Supreme Court vacancy? $45,600 Anonymous ? 14m ago WHL PM BUY Biden approval above 45%? $36,200 0x91bf…3c07
This is a big deal. Here's why.
Two platforms, one blind spot
Until now, Kalshi whale activity was invisible to anyone outside the platform. A trader drops $50,000 on a political outcome on Kalshi, and you'd never know — unless you happened to be watching that specific market at that specific moment.
Meanwhile, that trade might signal information that moves Polymarket prices minutes later. By the time you see the Polymarket move, the edge is gone.
That blind spot is now closed. Every Kalshi whale trade appears in your terminal the moment it happens, right next to the Polymarket flow you're already watching.
What you'll see
Platform badges — Each trade is tagged with its exchange. Polymarket trades show the Polymarket icon; Kalshi trades show the Kalshi icon. At a glance, you know where the money is moving.
Trade details — Size in USD, the market name, which outcome (Yes/No), and whether it was a buy or sell. Same format you're used to from Polymarket trades.
Anonymous traders — Kalshi does not reveal trader identities. Where Polymarket trades link to a full trader profile, Kalshi trades show an anonymous label with a tooltip explaining why. This is a Kalshi platform limitation, not ours.
Platform filter — The filter bar now includes a Kalshi (KSH) option. Toggle between Polymarket only, Kalshi only, or both. When you're scanning for cross-platform signals, keep both on. When you want to focus, narrow down.
Why this changes how you trade
The most profitable prediction market traders don't watch one platform. They watch both — because pricing differences between Polymarket and Kalshi are where edges live.
When a whale buys "Yes" on Kalshi at $0.58 and the same outcome trades at $0.52 on Polymarket, that's a signal. Maybe the Kalshi trader knows something. Maybe it's noise. But you can't evaluate it if you can't see it.
Now you can see it. Instantly. In the same terminal you already have open.
What's next
This is phase one. Kalshi whale trades are live, but we're building more:
Cross-platform analytics — Side-by-side pricing comparison for markets listed on both exchanges. Spot divergences before they converge.
Volume and flow analysis — Aggregate Kalshi trading volume by market, time of day, and direction. See where the money is going across both platforms without needing individual trader identities.
One thing worth noting: Kalshi is a centralized exchange. Unlike Polymarket — where every trade is on-chain and tied to a wallet address — Kalshi does not expose trader identities in its public data. That means individual trader profiles and leaderboards aren't possible for Kalshi. What we can track is every trade's size, price, market, and direction. That's what powers the whale feed.
We'll ship new features as they're ready. If you're already an 0xInsider user, everything shows up automatically — no action needed.
The terminal is live. Kalshi whale trades are streaming. If you've been watching only one platform, you've been watching half the market.