CLBK Shorts Elevated at 21% as Earnings Arrive

Columbia Financial reports today with short sellers holding one of the larger positions in the regional banking space, though the borrow market tells a more complex story than the headline figure suggests.

Short interest runs at 21.5% of free float, a genuinely elevated level. That figure peaked mid-October near 26.4% before dropping sharply last week, down 12% over seven days to roughly 22.5 million shares. The borrow itself remains easy: availability has expanded to roughly 500% of short interest, meaning five shares are available to lend for every one already borrowed. Cost to borrow has risen 69% over the past week to 1.06%, though that is still a modest fee in absolute terms. The step-up in cost, even as availability stays loose, reflects recent volatility in the lending pool rather than any genuine squeeze pressure. Options traders are leaning the other way: the put/call ratio sits at 0.31, well below its 20-day average of 0.44, a sign that call demand has picked up relative to downside hedging. That combination, elevated short interest falling from a peak alongside call-side options positioning, captures the debate heading into the print. The stock itself is up a fraction on the day at $10.73, down about 1.6% over the past month.

The bull case rests on margin momentum. Net interest margin came in at 2.11% last quarter, beating expectations by six basis points and expanding 23 basis points on a linked-quarter basis. The two analysts on record both rate the stock Outperform or equivalent, with a consensus price target around $14.17, implying roughly 32% upside from current levels. Bears point to credit quality: a loan loss provision of $2.9 million exceeded estimates by about $633,000 last quarter, and the core efficiency ratio of 75% signals that expenses are consuming a large share of revenues. Non-interest income also fell around 6% on a linked-quarter basis. The stock trades at roughly 0.88 times book value, which reflects that the market has not yet given management credit for the margin recovery story. The EPS momentum factor scores in the 100th percentile, a historically strong reading, while EPS surprise and earnings yield rank in the bottom quarter, showing analysts have not consistently under-estimated the company.

Institutional flows add texture. BlackRock filed a fresh Schedule 13G on October 27, disclosing a passive 7.6% stake of 20.4 million shares, the first such filing on record for this stock. The 13G designation indicates a passive rather than activist posture. Stakes are as-last-disclosed around the 5% threshold, and a holder can fall below 5% without filing again. The insider activity visible in EDGAR Form 4 filings is largely compensation-related grant awards, transaction code "A", at low dollar values. These are not open-market purchases and carry little directional signal.

Wikipedia attention for CLBK is running well above its own recent history, with a z-score of 5.3 as of October 19. That spike in retail attention, alongside short sellers covering aggressively last week, frames today's print as a test of whether the margin expansion story has enough momentum to absorb still-elevated credit concerns and a cost base that has yet to normalise.