Bitcoin Edge
Same underlying. Two pricing channels. We surface the gap on every active Kalshi bitcoin strike, in real time.
Quick Answer
Bitcoin Edge surfaces every strike where the IBIT-options-implied probability and the Kalshi YES price diverge on KXBTCD, Kalshi's hourly bitcoin market that settles on the CF Benchmarks BRTI rate. It runs across the seven hourly settles per weekday and flags HIGH / MEDIUM / LOW confidence — treat a flag as a shortlist to investigate, not an automatic trade.
What Is the Bitcoin Edge Tool?
Kalshi's KXBTCD market settles a new bitcoin contract at the top of every hour on a public CF Benchmarks bitcoin reference index. IBIT options on the same underlying settle through a different microstructure with the same outcome. The Bitcoin Edge tool extracts the probability the IBIT options book is implying, compares it to the Kalshi YES contract price on every active strike, and flags the gaps.
The free tier shows the headline — spot, ATM IV, hours to close, and the direction of the current top edge. The Pro grid below shows every strike with the signed edge in percentage points, the rationale, and direct trade links to Kalshi (with referral) and Robinhood (for the IBIT options hedge).
How to Use It
Start with the HIGH confidence rows — those passed all four liquidity guards (edge, distance from spot, spread, volume). Cross-check the rationale for any caveat. Click through to Kalshi to verify the live book before sizing. Then optionally enter the matching IBIT option on Robinhood as a directional hedge.
Direction-only preview. The full strike grid — edge in pp, confidence tier, rationale, and Kalshi/Robinhood links — is available with Pro.
Dealer gamma balanced. No regime modifier applied to today’s edges.
Methodology
- Settlement source. Kalshi's KXBTCD market settles twice daily — at 9:00 AM and 5:00 PM Eastern — on a public CF Benchmarks BRTI spot index. Each event is a strike-ladder of "Bitcoin price above $X?" binary contracts that pay $1 if BTC closes above the strike at the event window. Our spot reference is the canonical Crypto.BTC/USD feed Pyth Hermes publishes, which tracks the same 24/7 spot the BRTI samples.
- Options reference. We run real-time market analysis on the IBIT (BlackRock iShares Bitcoin Trust ETF) option market — by far the most liquid US spot-BTC ETF. IBIT tracks BTC at a known ETF-to-spot ratio, so call probabilities map cleanly to Kalshi strike levels even though the strike scales differ.
- IV recovery. The chain feed publishes implied volatility per strike. We use the NBBO mid for the smile fit and back-solve from the mid using Brent's method on the Black-Scholes inverse where the published IV is missing or implausible. Smile filter: strike within ±25% of spot; IV clamp [0.10, 1.50] annualized.
- Probability calculation. The risk-neutral probability that spot finishes above strike K is
N(d2)from the Black-Scholes formula, whered2 = (ln(S/K) + (r − σ²/2)·τ) / (σ·√τ). We use the 4-week T-bill yield for r and τ in years until Kalshi event close. Dividend yield is zero for spot BTC. - Edge calculation. The signed edge is
options_prob − kalshi_yes_price. Positive = YES is underpriced relative to options. Negative = NO is underpriced. Magnitude is reported in percentage points (pp). - Confidence tiers. HIGH — edge ≥ 15pp, strike within ±5% of spot, option bid-ask spread tight, Kalshi 24h volume ≥ 100 contracts.MEDIUM — edge ≥ 10pp; one liquidity guard fails (volume, spread, or distance from spot).LOW — edge between 5pp and 10pp, or wide spreads on both legs.PASS / SKIP — edge below 5pp, or missing IV (Brent failed to converge inside the smile band).
- Caveats. BTC spot trades 24/7 on global venues; the IBIT chain trades US options hours only (9:30 AM – 4:00 PM ET). Outside that window the engine deliberately pauses snapshot writes — running edge math against a frozen IV smile while spot keeps moving would surface basis-mismatch artifacts, not real edges. The IBIT-vs-BTC tracking error is bounded but non-zero. Use the tool as a screen — the Kalshi link on each row goes to the live order book before sizing.
- Last data refresh. Snapshot taken 0 minutes ago (BTC/USD spot = $59,933, updates in real time during market hours).
Position sizing: cap any single Bitcoin Edge play at 2% of trading account, and cap stacked correlated strikes (same direction, adjacent strikes) at 5% combined. Trade responsibly.
Related Tools
Why IBIT Options and Kalshi Disagree on Bitcoin
Bitcoin is the rare commodity-style market where two different US venues quote the same outcome with materially different microstructures. Kalshi's KXBTCD hourly flow is dominated by retail directional traders sizing in 1–10 contract clips. IBIT options are priced by professional market makers running risk-neutral hedging books with deep institutional flow. Two different markets, two different price discovery channels, one underlying asset.
When retail flow leaves a Kalshi strike at 25¢ and the IBIT options book is implying 45% on the same outcome, the gross gap is 20pp. Round-trip trading cost on Kalshi (bid-ask + fees) is typically 5pp on liquid bitcoin contracts, leaving roughly +15pp of expected-value edge after slippage. That is not noise — it is two markets on the same asset that have not agreed on the same number yet.
The Edge in pp
The Bitcoin Edge tool reports gaps in percentage points (pp). A +20pp edge on a BUY YES means the options book is pricing the YES outcome 20 percentage points higher than the Kalshi YES contract. The Kalshi contract pays out $1 if the event happens — pricing it below the options-implied probability is a direct expected-value edge.
Confidence tiers gate the rows by liquidity, not just edge size. A 40pp edge on a strike with zero 24h volume is not actionable. We require ≥100 contracts of recent volume, a tight bid-ask, and a strike within ±5% of spot for the HIGH tier. Outside those guards, the rationale field flags the specific reason the row dropped to MEDIUM or LOW.
The Hedge
The Robinhood link on each row goes to the IBIT option position that mirrors the Kalshi contract. Entering both legs neutralizes most of the directional risk and turns the trade into a pure mispricing capture. Sizing is 2% of trading account per Kalshi leg, 5% combined across correlated strikes — the methodology block below has the exact thresholds and caveats.
Kalshi Bitcoin Markets by Frequency
Kalshi runs bitcoin contracts at six cadences — 15-minute, hourly, daily, weekly, monthly, and yearly — all settled on the same CF Benchmarks Real-Time Index. This tool prices the hourly rung, where a live IBIT options chain gives an independent second opinion; daily/weekly/monthly coverage is in progress. The full breakdown:
Frequently Asked Questions
What is the Bitcoin Edge tool?
The Bitcoin Edge tool compares the model-implied probability of bitcoin closing above each strike on Kalshi's hourly KXBTCD market against Kalshi's own YES contract price for that strike, for the seven hourly settles per weekday that are covered by a live IBIT options chain. When the two diverge by more than the round-trip trading cost, the tool flags the strike as a tradeable edge — BUY YES, BUY NO, or PASS — with HIGH / MEDIUM / LOW confidence. The snapshot updates in real time during US options market hours.
How does Kalshi settle the KXBTCD bitcoin market?
Kalshi's KXBTCD market is a strike ladder that settles a new contract at the top of every hour, around the clock. Each strike is a 'Bitcoin price above $X at the close?' binary contract. Settlement reads CF Benchmarks' BRTI bitcoin reference index as a 60-second TWAP over the minute leading up to the hour — published in the Kalshi series metadata under settlement_sources. Our spot reference is the canonical Crypto.BTC/USD feed from Pyth Hermes, which tracks the same underlying market. Bitcoin Edge only signals on the seven hourly settles per weekday from 10 AM through 4 PM ET, when the IBIT options chain is open for trading.
Where do the options-implied probabilities come from?
We run real-time market analysis on the IBIT (BlackRock iShares Bitcoin Trust ETF) option market — the most liquid US spot-BTC ETF. IBIT tracks BTC at a known ETF-to-spot ratio. We compute the implied volatility per strike and back-solve from quoted mid using Brent's method on Black-Scholes where needed. The risk-neutral probability that spot finishes above strike K is then N(d2) from the Black-Scholes formula.
Why pause snapshots overnight if bitcoin trades 24/7?
Bitcoin spot trades 24/7 but US options on IBIT trade 9:30 AM – 4:00 PM ET only. Outside those hours the IBIT chain freezes — running edge math against a stale IV smile while spot keeps moving would surface basis-mismatch artifacts that look actionable but aren't. The engine deliberately pauses snapshot writes overnight and resumes at the next US market open. The 60-minute burst window before each KXBTCD event close still fires.
What confidence levels does the Bitcoin Edge tool use?
HIGH — edge ≥ 15pp, strike within ±5% of spot, option bid-ask spread tight, Kalshi 24h volume ≥ 100 contracts. MEDIUM — edge ≥ 10pp with one liquidity guard failing. LOW — edge between 5pp and 10pp or wide spreads. PASS — edge below 5pp or insufficient liquidity. BTC IV runs higher than the metal commodities (typically 50–80% annualized vs 25–35% for silver/gold), so the tier thresholds are tighter than the silver/gold version of the tool.
What's the practical workflow for trading a Bitcoin Edge call?
Take the BUY YES position on Kalshi at the listed strike. Optionally hedge the directional exposure with the matching IBIT option position on Robinhood — same spot-BTC exposure, settles inside the same US options window. Hold to the KXBTCD hourly close (the BRTI print at the top of the hour). Size to no more than 2% of trading account per position. Do not stack multiple correlated strikes in the same direction beyond 5% combined.
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