Elon Musk # tweets August 11 - August 18, 2026?

Platform comparison

Market context

Elon Musk’s X activity during the 11–18 August window will determine whether the contract settles in a very high posting band, with the tracker counting main-feed posts, quote posts and reposts but not replies. The current crowd-implied probability is 0% for a YES outcome, which suggests the market is effectively pricing the named range as unreachable relative to the far broader monthly tweet-count markets that still assign meaningful weight to 800+ or 1,000+ posts in August overall.[1][3]

That near-zero read is harder to reconcile with recent comparison markets than with Musk’s longer-run cadence. In the immediately preceding weekly contract, the live Polymarket board was concentrated around 180–219 tweets, while another venue on the same week put most of the mass in 171–270 tweets, implying a much higher expected volume than the current 0% line suggests.[2][7] A second Polymarket market for all of August 2026 also shows traders clustering around very large totals, with 1000+ and 800–839 leading the board, reinforcing the view that Musk’s posting frequency is normally high enough to keep weekly count markets live even when individual windows are volatile.[3]

For traders, the main catalysts are operational rather than corporate: any sudden shift in Musk’s schedule, major product announcements across X, Tesla, SpaceX or xAI, and live-event commentary can quickly change posting intensity, while the tracker’s own capture rules matter because deleted posts still count if they remain visible long enough and only certain post types are included.[1][2] The market description also notes that X may be used as a secondary resolution source if the tracker misfires, so disagreements between the live tracker and the platform itself are a practical risk worth watching during the window.[2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.