RB Global Short Interest Climbs to Year Highs as Shares Rally Into Q3 Print

RB Global, the industrial auction and salvage marketplace operator formed from the 2023 combination of Ritchie Bros. and IAA, reports Q3 results on November 5 with short sellers adding to positions at the fastest pace in over a year, even as the stock itself gained more than 6% last week.

Short interest has risen nearly 20% over the past month, reaching 9.7% of the free float, the highest level recorded in the available history. That build has accelerated recently: positions grew roughly 3.2% in the past week alone, reaching approximately 17.9 million shares. The move stands out when set against the stock's price action. RBA closed Friday at $89.69, up 10% over the past month and outpacing the median weekly gain of about 2.2% among its closest peers. BV gained 11% on the week, OPLN added 3.5%, and EFN was roughly flat, making RBA's rally look broad rather than sector-driven. Despite the rising share price, borrow costs remain low at 0.51%, and availability is generous at around 350%, meaning there is ample lending supply relative to current short positions and no immediate squeeze pressure in the funding market.

The disagreement heading into the print centres on whether the IAA integration is delivering what was promised. The bull case rests on visible operating progress: cycle times reportedly fell around 20% since the deal closed, Q1 Gross Transaction Value reached $4.34 billion, up 13.4% year over year, and the company has set targets of $100 to $120 million in cost synergies with a further $350 to $900 million in potential EBITDA from revenue synergies. Raymond James upgraded to Strong Buy in June and RBC Capital kept its Outperform rating with a $152 target after Q1 results. Against that, Barclays trimmed its target to $110 from $121 in early October while retaining Overweight, reflecting concern that a tight equipment supply environment could cap GTV growth, and that slower adoption of the RBAS online platform may limit margin improvement. The average analyst target of around $129 implies meaningful upside from current levels, but the stock is trading roughly 30% below that level, a gap that reflects how much the market has discounted the integration story since early 2026.

Insider activity over the past few months adds a modest counterweight to the short positioning. Two directors, Deborah Stein and Chloe Harford, made open-market purchases in August and September at prices between $80 and $84, spending a combined $164,000 in disclosed transactions. None were under a pre-arranged trading plan. The amounts are small relative to the company's $16.6 billion market cap, but discretionary board buying at prices well below the current level is worth noting in the context of the wider short build.

Retail attention has also picked up. Wikipedia page views for RB Global are running more than two standard deviations above the company's own 90-day baseline, placing it among the more attention-receiving names in recent weeks. That is a measure of interest rather than a financial signal, but it aligns with the broader setup: a stock where positioning and price are pulling in opposite directions.

The November 5 report will test whether Q3 GTV growth held near the Q1 pace and whether the company can show RBAS penetration moving in the right direction, the two variables that short sellers and bulls are most clearly disagreeing about at this price.