June 2026 handed index-options traders a tale of two markets. The Nasdaq-100 shed 4.06% while the Russell 2000 gained nearly 3% — a spread of more than 700 basis points that rewarded anyone who read the rotation signals we flagged early in the month. VIX dropped 9.63%, yet the complacency was selective: MSFT cratered 15.21% and NVDA fell 13.16%, making mega-cap tech the source of pain rather than the market's shock absorber.
The UOA flow told the story before the tape did. A $1.26 billion SPX put block on June 5 at the 8000 strike with an 18-day expiry was the opening salvo — institutional desks were buying downside before most retail participants had finished their morning coffee. By month-end, the rotation into defensives and financials was fully confirmed. XLV surged 10.75%, XLF added 8.15%, and XLI climbed 6.18% while XLK dropped 7.75%. Welcome to the June 2026 GammaBrief Monthly Recap.
GEX walls are price levels where dealers hedge aggressively. Price tends to gravitate toward Max Pain and stall near walls.
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