TransUnion Short Interest Hits Multi-Year High Before Q3 Results

Short sellers have built their largest position in TransUnion in over a year, even as the stock has climbed 10% this past week to $81.48. Short interest now stands at 7.4% of the free float, up 42% over the past month. The build has been nearly unbroken: from around 10.4 million shares short at the start of October to 14.4 million by October 22. Despite that accumulation, the borrow market is not under stress. The cost to borrow is running at just 0.49%, and availability is wide at 257%, meaning there are roughly two-and-a-half shares available to borrow for every share already shorted. Short sellers have been pressing the position into a rising stock without creating any squeeze mechanics in the lending pool.

Options tell a different story. The put/call ratio has dropped to 0.91, well below its 20-day average of 1.14. Two weeks ago, it briefly touched the 52-week high of 2.24. That swing from maximum defensive positioning to call-heavy positioning tracks almost exactly with the stock's 13% gain over the past month. Options traders appear to have rotated toward upside exposure precisely as short sellers were adding. The two camps are pulling in opposite directions.

Analysts have spent October cutting targets while maintaining ratings. Morgan Stanley trimmed to $97 from $106, keeping Overweight. Goldman Sachs lowered to $68, staying Neutral. RBC Capital moved from $100 to $92, holding Outperform. UBS raised its target to $83 on October 21, the one upward revision in a month otherwise dominated by cuts. The mean target across the Street is $89.19, roughly 9% above the current price. The bull case rests on TransUnion's positions in high-growth international markets like India and the Philippines, and on newer revenue streams including tenant screening and employment verification. Bears point to the company's reliance on mortgage and consumer lending for growth, segments that remain vulnerable to the current rate environment, and to uncertainty around VantageScore adoption.

The ownership picture adds one more layer. Dodge & Cox is the largest institutional holder at 12.6% of shares, and raised its stake by more than 8 million shares in the most recent disclosed period. The insider picture is more subdued: net selling over the past 90 days amounts to roughly $5.2 million across several executives, though most trades were conducted under pre-arranged 10b5-1 plans and carry limited informational weight as a result.

Tuesday's Q3 report will test whether the underlying revenue trajectory, particularly in US financial services, justifies the month's sharp recovery or validates the short position that has quietly grown alongside it.