13% — Will the United States acquire any territory not under its sovereignty (as of Issuance) before Jan 21, 2029
Leader: Before Jan 2028 at 13% · Kalshi 13% · 3 contracts · $490 volume · medium confidence
Updated 2026-09-25 11:00:40 UTC

Tracks the leading outcome in a winner-take-all prediction market set with 3 outcomes.

Why this matters:
This market asks whether the United States will acquire territory outside its current sovereignty by January 21, 2029—a roughly 2.3-year window. The 21% probability reflects traders' assessment that territorial acquisition is unlikely but non-negligible. The low probability reflects the rarity of sovereignty transfers in modern international law, though it could rise if geopolitical tensions escalate or if existing territorial disputes (such as regarding Greenland, Canada, or Panama Canal control) become active policy priorities. The main uncertainty resolves through either a formal territorial acquisition occurring before the deadline or the date passing without one. Shorter-term contracts pricing at 4-13% suggest traders assign minimal probability to near-term acquisition, concentrating expected risk toward late 2028 or early 2029.

Key factors:
- Current U.S. policy statements and official positions on territorial expansion or acquisition
- Geopolitical events or major shifts in U.S. foreign policy direction between now and January 2029
- International law and precedent: voluntary cessions of territory by other nations are extremely rare in the 21st century
- Specific territorial disputes or historical claims that could plausibly become active negotiation topics
- Definition and verification: what legally constitutes a recognized acquisition of sovereignty versus informal control or influence

Contracts:
- Will the United States acquire any territory not under its sovereignty (as of Issuance) before Jan 1, 2028?: Before Jan 2028 — 13¢ Kalshi $2 (weight 0%)
- Will the United States acquire any territory not under its sovereignty (as of Issuance) before Jan 21, 2029?: Before Jan 21, 2029 — 13¢ Kalshi $0 (weight 0%)
- Will the United States acquire any territory not under its sovereignty (as of Issuance) before Jan 1, 2027?: Before Jan 2027 — 4¢ Kalshi $488 (weight 100%)

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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: 2026-09-25T10:20:50.825Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "13% per prediction markets (SimpleFunctions, September 2026)"
Canonical: https://simplefunctions.dev/answer/usaexpandterritory
Full data: https://simplefunctions.dev/api/public/query?q=Will%20the%20United%20States%20acquire%20any%20territory%20not%20under%20its%20sovereignty%20(as%20of%20Issuance)%20before%20Jan%2021%2C%202029
Provider: SimpleFunctions — https://simplefunctions.dev