95% — Will SpaceX be assigned to Communication Services in the S&P-500
Leader: Communication Services at 95% · Kalshi 95% · 5 contracts · $4K volume · medium confidence
Updated 2026-06-25 20:15:58 UTC

Tracks the leading outcome in a winner-take-all prediction market set with 5 outcomes.

Why this matters:
This probability reflects market expectations that when SpaceX joins the S&P 500, the index operator will classify it in the Communication Services sector rather than Industrials or Information Technology. The 87% probability for Communication Services suggests traders believe SpaceX's satellite internet business (Starlink) will be weighted heavily enough in the S&P's classification decision to outweigh its launch services and aerospace manufacturing operations. The main drivers are the relative revenue contribution and strategic importance of Starlink versus traditional space activities, along with how S&P Dow Jones Indices interprets the company's primary business line. Classification could shift if SpaceX's financial disclosures prior to index inclusion show unexpected revenue splits, or if S&P provides guidance on methodology. The resolution will occur when S&P Dow Jones formally announces SpaceX's sector assignment, likely triggered by the company's S&P 500 inclusion announcement.

Key factors:
- SpaceX has not yet been added to the S&P 500, so classification remains contingent on inclusion and S&P's methodology
- Starlink revenue and growth rate relative to launch services and other divisions will be a material factor in sector assignment
- S&P Dow Jones Indices has discretion in classification and sometimes reclassifies companies based on evolving business mix
- The 87% price reflects significantly higher conviction than the 5-18% prices for Industrials alternatives, suggesting market consensus around Starlink's dominance
- No S&P guidance on SpaceX classification methodology has been publicly disclosed as of June 2026, creating interpretive uncertainty

Contracts:
- Will SpaceX be assigned to Communication Services?: Communication Services — 95¢ Kalshi $1K (weight 30%)
- Will SpaceX be assigned to Communication Services in the S&P?: Communication Services — 95¢ Kalshi $219 (weight 5%)
- Will SpaceX be assigned to Industrials?: Industrials — 4¢ Kalshi $3K (weight 65%)
- Will SpaceX be assigned to Energy?: Energy — 4¢ Kalshi $0 (weight 0%)
- Will SpaceX be assigned to Industrials in the S&P?: Industrials — 3¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-06-19T13:20:20.371Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "95% per prediction markets (SimpleFunctions, June 2026)"
Canonical: https://simplefunctions.dev/answer/spacexsector
Full data: https://simplefunctions.dev/api/public/query?q=Will%20SpaceX%20be%20assigned%20to%20Communication%20Services%20in%20the%20S%26P-500
Provider: SimpleFunctions — https://simplefunctions.dev