MDA Space Ltd. enters the back half of August in an awkward position: short interest has more than doubled over the past month, yet the borrow market remains so flush with supply that the pressure has nowhere to go.
The short interest story is the week's main tension. Bears have rebuilt their position aggressively — short interest as a percentage of free float climbed from roughly 2.7% in mid-July to 5.5% now, a 101% increase over 30 days. That jump landed on August 7, when reported shares short jumped from around 3.3 million to 7.1 million in a single step, and has held flat since. The stock itself dropped 3.2% on Tuesday, bringing the one-month gain down from what had been a sharper rally to a still-respectable 11.7%. The five-day move is essentially flat, -0.7%, so the most recent session's weakness stands out against an otherwise stable week.
The positioning picture looks more cautious than crowded, though. Borrow costs have edged higher — cost to borrow rose 33% on the week to just over 1%, its highest level in roughly a month — but that absolute level remains modest for a stock with this much short-side activity. More telling is the availability data: nearly 75 million shares remain available to borrow, giving an availability ratio above 1,800%, well into the "loose" range. For context, availability was tightest in mid-July when it fell to around 560%, coinciding with a brief spike in borrow costs above 1.3% and a utilization peak near 15%. That episode faded quickly. The current setup — shorts doubled, but borrow abundant and cheap — implies the short side is not yet squeezed, and there is plenty of room for fresh positioning in either direction without straining the lending pool.
On the fundamental side, the Street's forward earnings estimate trend is the standout. MDA's 12-month forward EPS growth ranks in the 90th percentile of its universe — an unusually strong reading that reflects the $40 billion contract pipeline and a backlog that analysts have flagged as the primary driver of the next two years. The PE multiple has expanded about 2.9 turns over 30 days to roughly 29.5x, and EV/EBITDA at 14.6x has drifted lower by about 0.9 turns over the same period — a mixed valuation signal. Analyst price target data from the ORTEX snapshot carries a mean target around CAD 67, implying meaningful upside from the current CAD 47.31, though those targets have not been updated recently enough to treat as current guidance. The short score of 37.4 — in the 37th percentile — reflects a stock that bears are watching but have not yet made a consensus short thesis around.
Insider activity adds another layer of complexity. Every trade on the record for the past 90 days is a sale. The CFO Guillaume Lavoie sold across three consecutive sessions in June. Multiple vice presidents unloaded positions in the same period, with one transaction above $1.7 million USD. Net 90-day insider activity shows about $6.3 million in net sales. These are not panic-level disposals — trade significance scores are low and some appear linked to awards — but the consistent direction of insider traffic at prices in the mid-CAD 50s, now some way above the current CAD 47.31, is worth noting. The stock has retraced from those insider-selling levels, which adds a degree of ambiguity: insiders were sellers into strength, and the stock has since come in.
Peers offer little relief this week. RKLB fell 3.6% on the day and 1.1% on the week. RDW dropped 4.2% over the week. MRCY slid 7.4% Tuesday alone. The one outlier is LUNR, up 17% on the week, though its correlation to MDA is the lowest in the group. The broad sector softness suggests the Tuesday selloff in MDA was not idiosyncratic — macro or sector-level pressure appears to be doing work across the space-and-defence complex simultaneously.
Next earnings are not due until mid-November, so the near-term narrative will likely be set by whether the sharp short-interest rebuild from July — now sitting stable at 5.5% of float for two weeks — begins to unwind or deepen, and whether borrow costs continue their recent creep higher toward the levels seen in the mid-July episode.
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