PMT shorts build while options traders turn bullish and index deletion looms

PMT enters November caught between two opposing currents: short sellers have spent six weeks steadily rebuilding positions, yet options traders just flipped to their most bullish posture in months, and an analyst upgrade followed straight on the heels of earnings.

Short interest at PennyMac Mortgage Investment Trust has climbed without interruption for nearly six weeks and now amounts to 14.5% of the free float, up 15% from a month ago and touching levels that place it firmly in elevated territory for a mortgage REIT of this size. The pace of accumulation is deliberate rather than dramatic: shorts added roughly 170,000 shares in the past week alone, and the ORTEX short score of 72.8 ranks in the 4th percentile for short pressure across the universe, a signal that bearish conviction here is genuine and persistent. The borrow market, however, is not supportive of a squeeze narrative. Availability has tightened modestly, dropping around 9% over the past week to 91.6%, meaning there is still nearly one share available for every share already borrowed. Cost to borrow has actually fallen 17% over the same period to just 0.64%, its lowest level in roughly a month. Shorts can add with little friction.

Options positioning tells a sharply different story. Call volume has surged relative to puts, pushing the put/call ratio to 0.80, more than two standard deviations below its 20-day mean of 1.26 and close to the lowest reading of the past year. That is the most call-heavy posture the options market has shown on PMT in recent memory, sitting near the 52-week low for the ratio at 0.71. This is a stark reversal from the pattern of the prior three weeks, where the PCR held above 1.3 consistently. The shift coincides with the stock's 8.7% weekly gain to $7.89, its strongest week in some time, so at least part of the call activity may reflect traders chasing the move rather than expressing independent conviction.

The Street is cautious but fractionally less so after earnings. Keefe, Bruyette & Woods upgraded PMT to Outperform this week, though the firm still cut its price target from $10.75 to $10.00, a rare pairing that signals the analyst sees the stock as cheap relative to its own revised expectations rather than as a growth story. Wells Fargo's Donald Fandetti, filing a note on 4 November, kept his Equal-Weight rating and trimmed the target to $9.00 from $10.00. The broader consensus remains a Hold with a mean target near $10.17, implying roughly 29% upside from current levels, though the direction of travel for targets has been almost uniformly downward since mid-year. The bull case centres on the 12% volume growth in conventional mortgages to $2.74 billion and a projected return on equity of 9.9%; the bear case points to continued book value erosion and declining servicing unpaid principal balance, now at $221.6 billion. Valuation is not demanding: the stock trades at 0.55 times book, and the price-to-earnings multiple of 5.9 times sits near the low end of its recent range, while the earnings yield factor ranks in the 56th percentile.

An institutional angle worth noting is the ORTEX index rebalance radar. ORTEX puts the probability of PMT's deletion from the CRSP US Small index at 87%, with the December 2026 Quarterly Review as the trigger event. The stock is currently 26% below the exit price line of $9.94. If the deletion is confirmed, trackers would need to sell an estimated $9 million worth of shares, equivalent to roughly 0.6 days of average volume, with the rank date on 4 December, a potential announcement on 7 December, and an effective date of 23 December. That is a mechanical selling flow, not an opinion on the company, but it matters for timing. BlackRock and T. Rowe Price remain the two largest institutional holders, with BlackRock reporting a 713,000-share increase at the end of September, though the Vanguard Portfolio Management entity reduced its stake from 5.72% to 3.95% as of 30 October, a notable trim confirmed in a 13G/A filing.

The most recent insider activity is unremarkable: the Chief Accounting Officer has been selling roughly 2,400 shares each month under a pre-arranged 10b5-1 plan, a mechanical programme rather than a discretionary signal. No open-market purchases appear in the recent record.

The stock bounced 2.8% on the day of its October 29 earnings report. The next scheduled print is 3 February 2027, giving 91 days for the competing forces of short rebuilding, the potential index deletion flow in December, and any shift in the mortgage rate environment to play out. The December rank date is the nearest hard catalyst on the calendar.