RXO shorts unwind fast as takeover looms

Options traders are hedging aggressively into RXO's 6 November earnings. That sits awkwardly alongside a sharp short unwind in the lending market. A C.H. Robinson takeover agreed in principle adds another layer: the stock's place in multiple indices is now in question.

Shorts cover, but borrow costs jump

Short interest fell 14.8% in a single week to 7.4% of free float as of 16 October. That is a meaningful unwind. Yet cost to borrow doubled over the same period to 0.85%, up 108% week on week and 116% over the past month.

The apparent contradiction resolves when you look at the lending pool. Availability stands at 1,968% of short interest, meaning nearly 20 shares are available to lend for every one currently borrowed. Shares available total around 150 million. The borrow market is loose, not tight. The CTB jump is more likely a re-pricing of risk around the deal and earnings than evidence of a squeeze.

Options lean bearish at 2.2 standard deviations

The put-call ratio hit 0.69 on 16 October, its highest in three months. The 20-day mean is 0.25. At 2.2 standard deviations above that mean, the current skew is statistically unusual. Traders are buying put protection at a rate well outside the recent norm, almost certainly tied to the earnings print on 6 November.

RXO's last three earnings moves: up 3.3% on the day, down 8.5%, up 3.3%. The asymmetry in those outcomes helps explain why the options market is leaning defensive.

The deal overhang

ORTEX forecasts an 84% chance RXO exits the Russell 2000 and the Russell 3000 if the C.H. Robinson acquisition closes. The S&P SmallCap 600 deletion probability stands at 80%. Estimated tracker selling ranges from $643 million for the S&P SmallCap 600 to $650 million for the Russell 2000, equivalent to 8.7 to 8.8 days of normal trading volume. These are ORTEX forecasts based on agreed deal terms, not confirmed index announcements. Dates are estimated around June 2027.

In past comparable Russell 2000 deletions triggered by acquisitions, 80% of stocks moved in the expected direction from announcement to effective date, with median trade-day volume running at 9.1 times normal.

MFN Partners, a Schedule 13D activist filer, holds 19.3% as last disclosed on 5 October, up from 19.2%. Orbis Investment Management holds 22.1% as last disclosed. Both are substantial blocks in the context of a deal.

EPS momentum factor scores rank in the 94th and 98th percentiles over 30 and 90 days respectively. The ORTEX short score has fallen from 62.1 on 5 October to 50.3 on 15 October, reflecting the rapid short covering.

Data summary

• SI % of Free Float: 7.4%, down 14.8% in one week
• Cost to borrow: 0.85%, up 108% week on week
• Availability: 1,968% of SI (approximately 150 million shares available)
• PCR: 0.69, z-score +2.2 vs 20-day mean of 0.25
• Next earnings: 6 November
• ORTEX short score: 50.3, down from 62.1 two weeks ago
• Russell 2000 deletion probability: 84% (ORTEX forecast, dates estimated)