SimpleFunctions

Elena Rybakina · KXWTA-26USO

Elena Rybakina is priced at 17¢ on Kalshi. Current book: 8¢ bid, 16¢ ask, 8¢ spread. This outcome ranks #3 of 16 inside KXWTA-26USO.

Price history

17¢ current

+15¢
0¢10¢20¢
Jun 22, 2026Jul 11, 2026

Contract brief

If Elena Rybakina wins the 2026 US Open Women's Singles professional tennis tournament, then the market resolves to Yes.

Outcome

Elena Rybakina

Rank

#3 of 16

Leader

Aryna Sabalenka 23¢

Range

1¢-23¢

Family volume

$2K

Identifier

KXWTA-26USO-RYB

Jul 12, 2026, 1:38 AM UTC · 30m ago

Implied probability

17¢
Latest venue quote
Jul 12, 2026, 1:38 AM UTC · 30m ago

Bid

Ask

16¢

Spread

24h volume

$6

Family rank

#3 of 16

16 outcomes · KXWTA-26USO

Closes

Sep 27, 2026

Family volume

$2K

Orderbook snapshot

8 / 16¢

Kalshi
8¢ spread
BidSize
100¢100
8¢376
7¢222
2¢500
AskSize
16¢125
18¢1.8K
21¢525
22¢25
23¢20

Contract terms

What resolves this market.

YES condition

If Elena Rybakina wins the 2026 US Open Women's Singles professional tennis tournament, then the market resolves to Yes.

Venue

Kalshi

Closes

Sep 27, 2026

Identifier

KXWTA-26USO-RYB

SF Signal
SF Index
2725.12
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

5450.2%

IY (No)

41.2%

Adj IY

2725%

CRI

12

Overround

-0.2%

Regime

neutral

Score

0.5

Full indicator table

5450.2%
41.2%
Adj IY
2725%
12
Overround
-0.2%

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.