Teradyne Options Pile Into Puts as Stock Drops 22%

TER has shed 22% over the past month, falling to $309, and the options market reflects that pressure directly: the put/call ratio has climbed to 1.63, near the 52-week high of 1.65 and above its 20-day average of 1.52. The ratio has risen steadily since late September, when it was running around 1.20.

Short positioning reinforces the defensive picture. Short interest in Teradyne is 5.2% of free float, roughly 8.2 million shares, up 9.4% over the past month. The build started in mid-September from around 7.3 million shares and has held through October's sell-off. The previous trader note from October 21 reported SI at 5.1% of free float; the figure has nudged higher since then. Borrow conditions offer no deterrent: availability is extremely loose at 5,607%, meaning shares remain easy to borrow, and cost to borrow is just 0.48%. The CEO, Gregory Stephen Smith, sold 4,000 shares at $341.28 on October 15 under a pre-arranged 10b5-1 plan, alongside smaller director sales. Pre-planned sales carry less informational weight than discretionary trades, but the net 90-day insider position is negative at roughly $5.9 million in shares sold.

The analyst community remains broadly constructive, though a divergence has opened up between price and targets. The consensus mean target is $445, against a current price of $309, a gap that reflects target-setting from mid-summer when the stock was trading higher. Baird downgraded TER to Neutral in August, holding its target at $420. Morgan Stanley left its Equal-Weight rating intact after the July print but raised its target to $397. The bull case centres on AI semiconductor test demand, with projections of over 50% of test revenue coming from AI applications and a path to $5 billion in revenue by 2027, alongside improving HDD test orders. Bears point to smartphone weakness, potential slowdown in datacenter AI infrastructure spending, and execution risk in the robotics segment, compounded by US-China trade tensions.

The stock's last earnings reaction, in late July, was sharp in both directions: an initial one-day move of roughly plus 14%, followed by a further 21% gain over five days. That reaction came when the stock was trading in different territory; the current setup, with a 22% monthly decline already priced in and shorts holding firm at 5%-plus of float, presents a different starting point. Closest peers including LRCX and AMAT each fell 8% to 13% over the past week, suggesting the sector is under broad pressure rather than TER-specific selling.

The print will test whether Q3 numbers and Q4 guidance are enough to reanchor a stock that has given back a substantial portion of its 2026 gains, with shorts positioned for further weakness and options traders paying close to the highest premium for downside protection all year.