Calix, Inc. enters the first week of June caught between two competing reads — a meaningful unwind in short positioning over the past month and a stock that keeps sliding, down 9% in the past 30 days to $39.49.
Short sellers pulled back sharply from late May. SI as a percentage of free float peaked near 10.6% around May 22, then dropped to roughly 9.4% by the start of this week — a fall of more than a full percentage point in under two weeks. The week-on-week decline in shares short is approximately 11%. That is a notable reduction in the size of the bear position, not an exit. At 9.4% of the float, short interest remains high in absolute terms, and with days to cover near 7.3 (per the latest FINRA data), any sharp move in the stock would take time to absorb. The lending market offers no amplification: availability is extraordinarily loose at roughly 1,470% of short interest, meaning there are nearly 15 shares available to borrow for every one currently borrowed. Borrowing costs have eased alongside, slipping to 0.42% — the lowest level in the past six weeks. Nothing in the borrow market suggests squeeze pressure is building.
Options positioning is quietly neutral. The put/call ratio of 0.54 is slightly below its 20-day average of 0.56, and the z-score is barely negative at -0.39. Neither bears nor bulls are making an aggressive bet through the options market right now. The 52-week range on the PCR runs from 0.10 to 2.02 — so the current reading is well toward the call-heavy end of that spectrum, but statistically unremarkable. Options traders appear to be watching, not positioning.
The Street remains constructive in direction but has been steadily trimming its ambitions. The analyst changes from around the April 22-23 earnings event — now roughly six weeks old — showed JP Morgan and Needham maintaining Buy/Overweight ratings while cutting targets to $65 and $62 respectively, after earlier reductions from the $90 level. Rosenblatt held at $70 through the same period. The mean price target of $66 implies more than 67% upside from the current price of $39.49, but that gap reflects how far the stock has fallen rather than fresh optimism. No bellwether changes have occurred since late April. The bull thesis rests on the Agentic AI and rural broadband stories — a $33 billion addressable market and growing government subsidies for network build-out. Bears flag rising memory costs, satellite and wireless competition, and near-term margin pressure. Valuation multiples have compressed: the P/E has dropped around 2.5 turns over the past 30 days to just under 19x, and the price-to-book ratio has shed roughly 0.34x over the same period, suggesting the market is re-rating the growth premium downward.
Insider activity offers one note of caution. Founder and Chairman Carl Russo sold approximately $1.08 million of stock in late April at prices around $43-44 — well above current levels. Earlier insider sales in November 2025, including $25 million from Russo and $3.3 million from CFO Cory Sindelar, were transacted in the mid-$60s. While these may reflect pre-arranged plans, the directional signal from insiders has been one-way selling for months, and the stock has fallen materially since those transactions.
Among correlated peers, the week has been mixed. CRNT jumped 13.6% and LITE gained 13% over the same stretch that CALX shed 2.1%. EXTR was up 9%. The contrast reinforces the pattern flagged in recent notes — CALX's underperformance looks more company-specific than sector-wide, with peers catching a bid that CALX is not sharing in.
The next earnings print is scheduled for July 22. The stock's recent reaction history is uneven: a 5.3% gain on May 4, but a 13.9% drop on April 22 and a 17.3% fall on April 21 within the same data set — likely reflecting different events or filings. That range of outcomes underlines how sensitive the stock is to forward guidance. With the short score holding just above 52 and the SI level still elevated despite the recent unwind, the July print is where the current standoff between a shrinking but still significant bear position and a bullish analyst consensus will next be tested.
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