#273 Aggregator
99c
Polymarket+Kalshi cross-platform arbitrage scanner published as a public Dune Analytics dashboard by @the_liolik — surfaces guaranteed-profit opportunities where YES+NO sums below $1.
$ 5.7k 1m volume
Quick facts
- Chains
- Polygon · off-chain (Kalshi)
- Venues
- Polymarket · Kalshi
Stats across DAY · WEEK · MONTH · ALL
From the Polymarket public data API. Updated daily.
Today · 24h
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This week · 7d
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All-time · all
#273
$5.7k
3 active users
builderCode
The 32-byte hash Polymarket uses to attribute volume to this builder on-chain.
0x797206f58146f95d6080daad878b94d5a306c5abb1f747ac101dfee20dd35f50 What is 99c?
99c is an Arbitrage tool for Polymarket that surfaces only through a Dune Analytics dashboard titled 'Prediction markets arbitrage scanner (Polymarket and Kalshi)' published by Dune user the_liolik. The dashboard scans for cross-platform price gaps where the combined implied probabilities of equivalent YES and NO outcomes across Polymarket and Kalshi sum to less than 100% — the canonical arbitrage signature where the dashboard's name 99c comes from. Coverage spans MLB, NBA, and NHL sports markets, with 58+ live arbitrage opportunities ranked by profit margin and real-time execution-window data sourced through May 2026. On the Polymarket Builder leaderboard 99c ranks #273 all-time at $5.7k cumulative volume from 3 cumulative users — a solo-builder pattern consistent with a public scanner powering a small private arbitrage operation. The 99c.io domain returned no usable product surface; the Dune dashboard is the only confirmed public surface.
99c is a Polymarket builder whose only verifiable public product surface is a Dune Analytics dashboard titled 'Prediction markets arbitrage scanner (Polymarket and Kalshi)' published by Dune user @the_liolik. The dashboard's purpose is straightforward: scan for cross-platform price gaps where the combined implied probabilities of equivalent YES and NO outcomes across Polymarket and Kalshi sum to less than 100%. When the sum is below $1, the spread is guaranteed-profit arbitrage — the dashboard surfaces every opportunity ranked by profit margin, with real liquidity figures so the trader can size the position.
The name 99c is a direct reference to the arbitrage rule: when YES on one venue plus NO on the equivalent market at another venue sums to (for example) 99 cents, the remaining cent is a risk-free margin. Example calculation surfaced inside the dashboard: 44% NO on Polymarket plus 55% YES on Kalshi = 99% combined, leaving 1% guaranteed profit per dollar wagered.
Coverage spans MLB, NBA, and NHL sports markets, with 58+ live arbitrage opportunities at the time of the May 2026 snapshot. Most liquidity-rich opportunities appear in MLB, consistent with Polymarket and Kalshi having mature MLB books. The dashboard captures execution timestamps in real time, with the highest theoretical opportunities showing 99.95% profit margins on extremely low-probability outcomes (which traders must verify are actually fillable).
The 99c.io domain did not surface as the builder's product page in research. On the Polymarket Builder leaderboard 99c ranks #273 all-time at $5.7k cumulative volume from 3 cumulative users (rank_month and volume_month null in manifest). The 3-user, sub-$6k all-time footprint is the canonical solo-builder pattern — a public arbitrage scanner that the_liolik (and perhaps two other coordinated traders) uses to power a small private execution flow on Polymarket and Kalshi. Author handle @the_liolik on Dune is the only public identity attached to the project.
Key features
- Cross-platform Polymarket↔Kalshi arbitrage scanner
- Scans for YES + NO combined < $1.00 (guaranteed-margin arbitrage)
- Ranks 58+ live opportunities by profit margin
- Real liquidity data per opportunity
- Coverage: MLB, NBA, NHL sports markets
- Real-time execution timestamps via Dune
Founders & team
- @the_liolikDashboard author / builder
Dune Analytics user who publishes the 'Prediction markets arbitrage scanner (Polymarket and Kalshi)' dashboard. Real-name identity not publicly disclosed.
What others have written about 99c
- Prediction markets arbitrage scanner (Polymarket and Kalshi) — Dune Analytics
Rank + volume over time
Daily snapshots from our scraper. Charts populate as history accumulates.
All-time rank
Lower is better. Inverted Y-axis.
All-time volume
Cumulative routed volume in USD.
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How to verify 99c
- On-chain attribution — every Polymarket Builder routes via an order that includes their
builderCode. The hash above is checkable on Polygon against Polymarket's CTF Exchange. - Polymarket's own verification — $99c carries the official ✓ verified flag in the data API.
- Cross-check Polybot Arena — polybot.arena tracks wallet-level P&L for builder-tagged bots. If a builder claims specific performance, their wallet should be findable there.
- Tier-2 patterns to avoid — we flag builders that match the Tier-2 pattern (no public team, no verifiable claims, recurs across affiliate-SEO listicles). See our /methodology page for the full criteria.
About 99c 06 answers
FAQ
01 What is 99c?
99c is an Arbitrage tool for Polymarket that surfaces only through a Dune Analytics dashboard titled 'Prediction markets arbitrage scanner (Polymarket and Kalshi)' published by Dune user the_liolik. The dashboard scans for cross-platform price gaps where the combined implied probabilities of equivalent YES and NO outcomes across Polymarket and Kalshi sum to less than 100% — the canonical arbitrage signature where the dashboard's name 99c comes from. Coverage spans MLB, NBA, and NHL sports markets, with 58+ live arbitrage opportunities ranked by profit margin and real-time execution-window data sourced through May 2026. On the Polymarket Builder leaderboard 99c ranks #273 all-time at $5.7k cumulative volume from 3 cumulative users — a solo-builder pattern consistent with a public scanner powering a small private arbitrage operation. The 99c.io domain returned no usable product surface; the Dune dashboard is the only confirmed public surface.
02 What is the official website of 99c?
99c's official site is https://dune.com/the_liolik/99c. We verified the URL by visiting the homepage and confirming it references Polymarket or prediction markets directly. If you believe this URL is incorrect, email [email protected].
03 Is 99c verified by Polymarket?
Yes — 99c carries Polymarket's official ✓ verified flag (returned by their data API as `verified: true`). This indicates Polymarket has reviewed the builder; it's not a guarantee of product quality or financial outcomes.
04 Who founded 99c?
@the_liolik (Dashboard author / builder). Sourced from the project's own materials and public profiles; we don't fabricate team identities and clearly mark builders whose team is publicly anonymous.
05 What are 99c's key features?
Cross-platform Polymarket↔Kalshi arbitrage scanner; Scans for YES + NO combined < $1.00 (guaranteed-margin arbitrage); Ranks 58+ live opportunities by profit margin; Real liquidity data per opportunity; Coverage: MLB, NBA, NHL sports markets; Real-time execution timestamps via Dune. Sourced from the official site/homepage at the time of research.
06 How does 99c compare to similar builders?
99c is ranked #273 all-time, with similar-category peers including tovest, noma.xyz, vatic.trading. The leaderboard reorders daily — see the history chart for 99c's rank trajectory.