Costco holds $950 as buyback runway shrinks and valuation premium holds firm

Options positioning has eased slightly from the bullish extreme reached last week. The put/call ratio ticked up from around 0.88 to 0.90, still nearly a full standard deviation below its 20-day average of 0.95, and well off September's elevated range when the PCR was running above 1.09. The borrow market remains irrelevant to the thesis: short interest is 1.6% of the free float, availability is essentially unlimited, and cost to borrow at 0.48% is the same background noise it has been all year. There is no short-side pressure, and none is building.

The analyst picture is one of calibrated caution at a premium price. After the September 24 earnings beat, most of the Street maintained ratings but pulled back price targets. JP Morgan's Christopher Horvers cut from $1,100 to $1,015 while keeping Overweight. Raymond James trimmed from $1,100 to $1,050, also Outperform. Deutsche Bank lowered its target to $1,079, still Buy. RBC reiterated Sector Perform at $1,000 as recently as October 9. The consensus mean is $1,060, implying roughly 11% upside from current levels, but the direction of target revisions has been uniformly downward. The trailing P/E has expanded to 38.9x, up about a point over the past month, and EV/EBITDA runs near 24x. Bears point to that premium explicitly: at roughly 27x forward EBITDA versus a decade-long average closer to 20x, the stock needs membership growth and same-store momentum to keep delivering to justify the multiple. Bulls counter with 92.3% U.S. renewal rates, e-commerce that has grown to about 10% of sales from 4% in 2019, and a plan to open roughly 30 warehouses per year.

The most distinctive data point this week sits in Costco's own corporate filings. ORTEX Alt Data, drawing on SEC EDGAR XBRL disclosures, flags that the remaining buyback authorisation has fallen for 13 consecutive quarters, reaching $1.36 billion as of the April 2026 period, down 39% on the same quarter a year earlier. That is a streak worth noting in context. Costco has historically used buybacks sparingly relative to its cash generation, so the declining authorisation is less a distress signal and more a measure of management's capital-allocation priorities, with elevated capex for new warehouses absorbing the available firepower. It does, however, limit one potential source of per-share EPS support heading into the December 10 print.

Insider activity is routine rather than directional. The most recent open-market transactions were two discretionary sales in late September: EVP Claudine Adamo sold 2,200 shares at $915.93, and SVP Caton Frates sold roughly 800 shares at the same price, together totalling about $2.75 million. The September 10 activity was compensation mechanics, stock awards accompanied by tax-withholding sales, not conviction trades. Net insider activity over 90 days is a modest negative at roughly 3,000 shares sold, which tells you very little about direction.

With earnings on December 10, the setup to watch is whether monthly sales data between now and then, and any commentary on membership trends, either confirms or complicates the bullish case at a P/E north of 38x.