S&P 500 jumped 1.75% on June 11 after Trump signaled a US-Iran deal was near and called off planned strikes, and the June 12 Polymarket contract implied an 83% chance the index opens higher. With a final peace agreement potentially signed in Switzerland as soon as Sunday plus the record SpaceX IPO debut fueling risk-on flows, near-term momentum favors a higher close despite mild pullback risk after the rally.