RMBS puts spike ahead of October 26 earnings

Options traders are piling into protective puts on RMBS just six days before the company reports. The put-call ratio jumped to 0.6292 on Monday, 4.1 standard deviations above its 20-day mean of 0.556. That is the most extreme options skew seen on the stock in weeks, and it lands against a backdrop of shrinking short positions and tightening borrow costs.

Earnings anxiety drives the options signal

The PCR spike is the clearest signal in this convergence. At 0.6292, put demand has pulled sharply away from its recent range. The 52-week low sits at 0.2442, and the 52-week high at 0.8508, so the current reading is elevated but not at a full-year extreme. What makes it notable is the pace: every session from late September through early October the ratio sat between 0.54 and 0.56, then Monday's print broke the pattern by a wide margin.

Rambus last reported on July 27. The stock fell 8.6% the following day and shed a further 3.9% over the next five sessions. That outcome appears fresh in the options market's memory.

Short sellers cut exposure, borrow costs rise anyway

Short interest has dropped 21.6% over the past week to 4.2% of free float, and is down 28.9% over the past month. At roughly 4.5 million shares short, the position is meaningful but not extreme. Availability remains very loose at the 9,999% level recorded on October 16, reflecting 79 million shares still available to borrow against the shares already lent out. There is no squeeze pressure from the lending market.

Despite that, the cost to borrow has risen 85% over the week to 0.54%. The absolute level remains low. The rise alongside falling short interest is a technical artefact as much as a demand signal: fewer borrows outstanding but a similar pool of lendable shares can push per-unit pricing even when aggregate demand falls.

Analysts still bullish, stock well below targets

The consensus price target stands at $141.57, against a close of $92.66 on October 19. That implies roughly 53% upside to the mean target. The most recent analyst action was Evercore ISI Group lowering its target to $160 from $172 after July's earnings miss, while maintaining an Outperform rating. Rosenblatt holds a $165 Buy and Benchmark initiated at $165 Buy in July. Baird is the outlier, downgrading to Neutral at $120 in April.

The gap between the current price and the analyst consensus is wide. Whether that reflects genuine value or analyst inertia given the stock is down 8.3% over the past week and the sector is broadly under pressure, will partly be answered on October 26.

Data summary

• Put-call ratio: 0.6292, z-score 4.1 standard deviations above 20-day mean, highest in recent weeks
• Earnings: October 26, after market close; last print saw a one-day move of -8.6%
• SI % of FF: 4.2%, down 21.6% week on week, down 28.9% month on month
• Cost to borrow: 0.54%, up 85% week on week, absolute level still low
• Availability: very loose, 9,999% as of October 16
• Consensus price target: $141.57 vs close of $92.66; stock down 8.3% past week