AM Short Interest Jumps 18% in a Week as Peers Rally Past It

Antero Midstream reports Q3 results today with short sellers building positions at an unusual pace and the stock sitting out a midstream rally that lifted its closest peers.

Short interest jumped 18% over the past week to 3.1% of the free float, reaching its highest level in at least a year. That weekly move is 2.3 standard deviations above AM's own typical weekly shift, making it one of the more decisive positioning changes ahead of this print. The ORTEX short score rose to 44.3 on October 27, up from 39.6 a week earlier, a sustained climb rather than a one-day spike. What has not moved in the same direction is the borrow market: cost to borrow is 0.37%, near the low end of its recent range, and availability, though tighter than it was a fortnight ago at 1,077%, remains extremely loose. Plenty of shares are available for new shorts. There is no squeeze pressure here.

The peer gap is the other notable feature heading into the print. AM closed flat on the week while WMB gained 5.3%, DTM rose 4.9%, and OKE and TRGP each added roughly 3.4%. The stock fell 1.7% on Wednesday alone, pushing the one-month decline to just under 1%. The sector has been repricing upward; AM has not participated.

The analyst setup has not changed materially since the earlier preview this week. The consensus is five holds and one buy, with targets clustering in the low $20s against a current price of $20.75. UBS last moved in late September, trimming its target to $22 from $24 while staying Neutral, and Goldman Sachs holds the same rating. That modest gap between price and targets reflects a view that the stock is fairly valued rather than deeply discounted. The counterpoint is the 12-month forward EPS growth rank, which scores in the 89th percentile, meaning estimate momentum has been running well ahead of what the ratings suggest. One session ago the EV/EBITDA multiple was 9.86 and has been drifting lower over the past 30 days, which gives the valuation picture a slightly more supportive tilt even as the headline ratings have not shifted.

The retail attention signal that was notable earlier in the week has climbed further. The ORTEX Wikipedia-based attention z-score reached 5.6 as of October 25, its highest reading in the tracked window. This measures page views and ORTEX stock-page visits against AM's own 90-day history on a log scale. It carries no directional implication, but the level is unusual for a name this quiet in the options market, where the put/call ratio of 0.44 remains almost exactly in line with its 20-day average.

Today's print will test whether the acceleration in short interest over the past week reflects informed anticipation of a miss, or whether it unwinds quickly against a backdrop of loose borrow conditions and forward earnings estimates that have been moving the other way.