Teradyne Shorts Trim After Earnings, Stock Rebounds 4.8%

TER posted its quarterly results on October 28, and short sellers spent the preceding week unwinding positions that had been building since mid-September, with the stock bouncing 4.8% on the day even as the monthly damage remained steep.

Short interest peaked above 8.4 million shares in late September before pulling back sharply. By October 27, borrowed shares stood at roughly 7.86 million, equivalent to 5.0% of the free float, down 2.8% on the week. The retreat from the October highs is meaningful: earlier this month SI touched 8.4 million, so the most recent readings represent a genuine reduction in bearish conviction rather than noise. FINRA's most recent fortnightly settlement, covering October 15, put short shares at 7.86 million with days-to-cover of 2.9, broadly consistent with the daily estimate. The borrow market creates no friction for either side: availability is at 4,585%, meaning shares available to lend vastly outnumber those already lent out, and the cost to borrow sits at just 0.50%. Bears can add or exit positions without constraint.

Options positioning stayed elevated through the week but has come off its most defensive extreme. The put/call ratio closed at 1.57 on October 27, down from a 52-week high of 1.65 touched earlier in October and from 1.63 the prior session. That ratio still runs above its 20-day average of 1.53, reflecting residual caution rather than outright alarm. The z-score of 0.45 places current positioning only modestly above the recent norm, a notable softening from the more stretched readings seen earlier in the month when puts were accumulating aggressively into the earnings setup.

Analyst sentiment is broadly constructive but dated: the most recent changes on record are from August, when Baird downgraded to Neutral at $420. Before that, a cluster of upgrades through June and July from Goldman Sachs, UBS, BofA, Evercore, and Cantor Fitzgerald pushed targets into the $420 to $550 range, reflecting enthusiasm about AI-driven test demand and the HDD segment recovery. The mean price target at the last update stood at $445, putting it roughly 37% above the current $323.68 close. The valuation picture has compressed meaningfully over the past month: the P/E has fallen nearly 8 points over 30 days to 29.4x, and price-to-book has declined by 2.8 turns to 10.1x, both reflecting the 19% monthly drawdown. The earnings yield factor ranks in the 67th percentile, while near-term EPS momentum sits in the 23rd, suggesting the market has been trimming growth expectations even as longer-run estimates held firmer.

Insiders have been net sellers over the past 90 days, with net proceeds of roughly $5.9 million leaving the register. The most notable transaction was CEO Gregory Stephen Smith's sale of 4,000 shares at $341.28 on October 15, raising $1.37 million. Director Marilyn Matz also sold in two tranches around the same date. All disclosed trades were executed under pre-arranged 10b5-1 plans, which reduces their informational weight compared with discretionary sales, but the directional signal is consistent across the register. On the institutional side, BlackRock added 3.1 million shares in the September quarter to reach a 12.4% stake, while JP Morgan Asset Management added 2.2 million shares to bring its holding to 2.9%. T. Rowe Price added 1.2 million shares. The passive and active flows are both moving in the same direction, even as the stock has given back a significant portion of its year-to-date gains.

Wikipedia attention for Teradyne is running at a z-score of 1.85 against its own 90-day history, the highest retail attention reading in that window, consistent with the earnings event drawing broader interest to the name. The next data point to watch is how short interest responds in the days following the October 28 print, where the direction of SI relative to the 7.86 million share baseline will indicate whether the pre-earnings unwind continues or reverses.