Q1 broke the operating-leverage cadence — a hard-dated event 12 days out decides whether it stays broken.

• The cadence break. Q1 2026 Adj EBITDA grew +3% YoY on units +22% — a clean break from FY24-25, when EBITDA grew faster than units every quarter. Merchant GPU printed $1,100 (−3.4% YoY), the first negative print since 2023; Autohero retail GPU stalled for the first time in eight quarters.
• The FY26 guide. Management held $291–320M Adj EBITDA on revenue tracking above $11.6B — flat-to-down margin from FY25's 2.4%. After Q1's $69M, H2 has to carry $128–180M, and the bull has named $1,090 Merchant GPU as the tripwire while the bear flags $1,050–$1,105.
• The resolver. Capital Markets Event lands 17 June — first formal Merchant / Retail / Fintech segment disclosure in years, against standing 10% share / 5–9% margin targets. Two weeks later the 29 July Q2 print is the first real test of the H2 ramp the guide requires.

First segment disclosure in years lands into a tape positioned both ways.

• What the venue resolves. Auto1 reports consolidated; Merchant, Autohero, and Fintech share sourcing, pricing, and ABS funding. The 17 June deck promises historic stand-alone segment economics for the first time, plus a refreshed long-term framework against the 10% European share / 5–9% Adj EBITDA margin targets that anchor every bull model.
• What the bull needs. Fintech broken out as a third margin pillar at ≥10% of group GP, Autohero stand-alone GPU after marketing ≥$2,790, and a credible bridge from FY25's 2.4% margin to 4%+ by FY28. JPMorgan's $43 PT (+62%) is pencilling all three already; 12 of 13 brokers rate Buy.
• The positioning. Quants are publicly net short ~4.22% of shares — JPM AM, Qube, AHL, D.E. Shaw, Marshall Wace — on a $13M-per-day tape; days-to-cover at 20% of ADV is ~87 sessions. Crowded both ways into a hard-dated event.

Second profitable year — biggest cash burn ever in the same year.

FY24 was Auto1's first GAAP-profitable year (NI $22M); FY25 scaled it 3.7× to $92M while operating cash flow ran −$544M — a 14-year cumulative ~$2.0B FCF burn that just got worse in the 'profitable' year. The defence: $1.05B of inventory ABS plus $620M of consumer-finance ABS sit in non-recourse vehicles against $750M of parent net cash, so the $1.55B gross debt stack is collateral-matched. The variant read: that mechanic makes Auto1 increasingly a leveraged financier — credit businesses trade at 10–12× earnings, not the 17–22× the marketplace cohort gets.

Two businesses, one balance sheet — only one has a moat.

• AUTO1.com (Merchant). 740,732 cars traded across 30+ countries with ~30% cross-border. A proprietary AI pricing engine drove FY25 Merchant GPU up 6.7% to $1,147 into a softening cycle — a result asset-light classifieds peers cannot generate because they do not own the transaction. 88% of units, 73% of group gross profit.
• Autohero (Retail). 101k units (+36% YoY), GPU $3,061 — 2.7× the Merchant rate, but the segment is rated moat not proven: Mobile.de and AutoScout24 own the German buyer entry point, aided brand awareness is 35% vs Carvana's 70%, and EU consumer-credit rules cap the finance attach that earns Carvana ~50% of its gross profit.
• The catch in the headline. Q1 2026 disclosed only 36,200 active buying dealers against the 60,000+ registered base sell-side still cites — a ~60% activation rate that has never been priced. If the real network is 36k, BCA and Manheim Europe can target that universe directly rather than build to 60k.

From SoftBank-funded IPO darling to first-wobble compounder in five years.

Before: Bertermann and Koç built Auto1 from a Berlin C2B brand (wirkaufendeinauto.de) into Europe's largest wholesale used-car auction by 2020, funded through SoftBank's Vision Fund. The February 2021 IPO at $44.55 ripped to $64.50 on day one and a $9.3B valuation — 'path to profitability' was the entire pitch.

Pivot: The 2022 used-car wash-out cut Adj EBITDA to −$177M, took the stock 80% from peak and forced a strategic reset. Through 2023 management retired the growth-at-all-costs language, leaned the cost base, and printed the first positive Adj EBITDA quarter in Q3. The stock bottomed at $3.57 in March 2024 and 7×'d through to early-2026.

Today: FY25 closed +81% on Adj EBITDA, +22% on units and lifted GAAP net income from $22M (FY24, the first profitable year) to $92M — and CFO Markus Boser was replaced by Christian Wallentin (ex-Hoist Finance, securitisation specialist), a tell that the next leg of margin is meant to come from the credit-spread layer, not pure unit economics. Q1 2026 was the first cadence break since the turnaround. The 17 June Capital Markets Event is where the next chapter starts.