Wednesday's session saw unusual options activity across three S&P 500 components, with contracts trading at levels that represented significant fractions of each stock's recent average daily share volume. The flow points to concentrated positioning ahead of near-term expirations in 3M, Humana and Walmart.
3M calls cluster at $170 for Friday expiry
In 3M, 13,301 contracts changed hands, equivalent to roughly 1.3 million underlying shares. That figure amounted to 46.6% of the company's 2.9 million-share average daily volume over the past month. The $170 strike call expiring September 25, two sessions away, absorbed 4,025 contracts alone, or about 402,500 shares.
Humana puts concentrate at $110 for January
Humana recorded 4,035 contracts, representing approximately 403,500 shares, or 43.6% of its 926,245-share monthly average. The $110 strike put expiring January 15, 2027 drew 2,300 contracts, covering roughly 230,000 shares. The put bias and longer dated expiry suggest a hedge or directional bet extending into next year.
Walmart call volume dwarfs peers in absolute terms
Walmart led the group in raw size with 97,232 contracts, translating to 9.7 million shares, 41.3% of its 23.5 million-share monthly average. The $115 strike call expiring September 25 accounted for 16,421 contracts, or 1.6 million shares. The Friday expiry mirrors 3M's concentration, though the notional exposure is an order of magnitude larger.
Expirations frame the week ahead
All three names show volume skewed toward strikes expiring this week or early next year. The data, sourced from StockOptionsChannel.com, does not identify counterparties or motivations. Open interest changes through Thursday will clarify whether positions are being opened or closed ahead of the September 25 settlement.