IDEXX Surges 22% as Puts Pile In After Earnings

IDXX jumped 21.8% on November 3, its biggest single-day gain in recent memory, after reporting results that landed well ahead of expectations. The stock closed November 2 at $671.64, up 29.6% over the past month.

The options market registered the move before it was fully priced in. The put/call ratio stood at 0.901 on November 2, 3.3 standard deviations above its 20-day mean of 0.488. That was the most defensive positioning since earnings Friday. Options buyers who had been loading up on downside protection since mid-October were caught on the wrong side of the gap.

Retail Attention Spikes Alongside the Price

Wikipedia page views and ORTEX stock page traffic for IDEXX moved to 2.9 standard deviations above their 90-day average as of November 3, per ORTEX Alt Data. That is an attention reading, not a revenue indicator, but the magnitude reflects a stock that has entered wider public consciousness after years of relative quiet. IDEXX's largest second-quarter buyback spend on record (since 2010) was $346.8m for the quarter ending April 2026, context worth noting as the company's capital allocation picture comes back into focus.

Analysts Adjust After the Gap

UBS raised its price target from $627 to $700 on November 3, maintaining a Neutral rating. That target was $670 just a week earlier, before UBS trimmed it to $627 on October 27. The target is now below where the stock is trading. JP Morgan holds an Overweight rating with a $750 target, set in October. The consensus mean target across the analyst panel sits at $705.92.

BTIG suspended its rating on October 30, before the print.

Borrow Market: Ample Room, But Tightening at the Margin

Availability has fallen from around 4,470% a week ago to 3,009% now. That remains an extremely loose lending market: shares available to borrow still outnumber those already borrowed by roughly 30 to one. Cost to borrow rose sharply earlier in the week, reaching 0.55% around October 30, but has since eased to 0.36% as of November 2. Short interest sits at 2.5% of the free float, up about 5.6% over the past week in share terms, but the absolute level is low. There is no structural short position of consequence here.

Data Summary

• Price: +21.8% on November 3; +17.8% over the past week; +29.6% over one month
• Put/call ratio: 0.901 on November 2, 3.3 standard deviations above its 20-day mean of 0.488
• Retail attention (Wikipedia/ORTEX traffic): 2.9 standard deviations above 90-day average as of November 3
• Short interest: 2.5% of free float, up 5.6% over the past week
• Borrow availability: 3,009% (down from 4,470% a week ago; still very loose)
• Cost to borrow: 0.36% as of November 2, down from a week-high near 0.55%
• UBS target: raised to $700 from $627, Neutral maintained (November 3)
• Next earnings event: November 6