Among Russell 3000 components, three stocks drew significant options market attention on Thursday, signaling heightened investor interest across biotech and finance sectors.
Ultragenyx Pharmaceutical Inc (Symbol: RARE) led the pack with a total options volume of 20,859 contracts traded during the session, a substantial level of activity worth noting.
That contract volume represents approximately 2.1 million underlying shares, given that each single contract covers 100 underlying shares of the stock.
The RARE volume figure equals roughly 69.8% of the stock’s average daily trading volume over the past month, which stands at approximately 3.0 million shares.
The most active strike for RARE was the $25 put option expiring October 16, 2026, with 7,010 contracts changing hands, representing around 701,000 underlying shares.
TPG RE Finance Trust Inc (Symbol: TRTX) was the second notable name, recording options volume of 5,006 contracts, equivalent to approximately 500,600 underlying shares.
That TRTX volume represents roughly 69.5% of the stock’s average daily trading volume over the past month, which sits at approximately 720,525 shares.
The standout trade in TRTX was concentrated entirely in the $10 strike call option expiring January 15, 2027, with all 5,006 contracts tied to that single position.
Five9 Inc (Symbol: FIVN) rounded out the trio with options volume of 13,067 contracts, translating to approximately 1.3 million underlying shares across the session.
That figure represents a sizeable 59.3% of FIVN’s average daily trading volume over the past month, which averages approximately 2.2 million shares.
The highest concentration of FIVN activity was seen in the $22.50 strike call option expiring October 16, 2026, with 5,768 contracts trading, representing around 576,800 underlying shares.
The clustering of call activity in both TRTX and FIVN suggests traders may be positioning for upside moves in those two names ahead of their respective option expiration dates.
