Retail investors aren’t just back. They’re bigger than they’ve ever been, and they’re starting to trade like institutions.

Citadel Securities’ Global Market Intelligence report for July, authored by Scott Rubner and dated June 17, 2026, lays out three themes the firm sees driving markets in the coming weeks: record retail participation, a technical reset heading into quarter-end, and a favorable seasonal backdrop for risk assets.

Retail is the main character now

Citadel Securities executes roughly 35% of all US-listed retail trading volume. In May, retail cash equity volumes surged more than 10% beyond the previous all-time peak set in January 2021. June is tracking 9% higher than May.

The options market tells a similar story. Daily options premiums jumped from $5.8 billion per day in May to $7 billion in June. Semiconductor options alone accounted for $1.6 billion in daily premium during May, a figure that climbed to approximately $1.9 billion per day in June.

Retail flows are increasingly concentrated in institutional-favored areas like semiconductors. The bottom 50% of US households now own a record total exceeding $600 billion in equities and mutual funds.

The technical reset and a record options expiration

The second theme Rubner flags is a technical reset heading into the end of the quarter. The centerpiece here is what Citadel describes as the largest options expiration on record, valued at approximately $8.3 trillion.

Seasonal tailwinds and structural demand

ETFs have attracted over $1 trillion in inflows year-to-date. That pace is running 45% ahead of the record set in 2025. Corporate buyback authorizations have surpassed $925 billion year-to-date through mid-2026.