Hewlett-Packard
HP Autonomy $11.1B Acquisition Write-Down
Estimated impact: $8.8B write-down
HP acquired British software company Autonomy for $11.1 billion in August 2011, paying a 64% premium. Within 13 months, HP wrote down $8.8 billion — 79% of the purchase price — alleging that Autonomy had inflated revenues through accounting improprieties. Due diligence had flagged concerns about Autonomy's hardware sales being classified as software revenue, but HP leadership dismissed these warnings.
Decision context
Whether to proceed with the Autonomy acquisition at 12.6x revenue despite due diligence red flags about revenue recognition practices and accounting irregularities.
The analysis below was produced from the pre-decision document only — no hindsight. This is what the platform would have surfaced if it had been running in 2011-08-18.
“HP's August 18, 2011 press release: "HP today announced it has entered into a definitive agreement to purchase Autonomy Corporation plc for approximately $11.1 billion... Autonomy is a leader in the fast-growing area of information management and next-generation enterprise search... HP expects the acquisition to be accretive to HP's non-GAAP earnings per share." CEO Léo Apotheker stated: "Autonomy will be a different kind of platform company." Internal due diligence teams had flagged that a significant portion of Autonomy's "software" revenue was actually derived from low-margin hardware sales resold as bundled software — a concern that was escalated to leadership but overridden.”
Source: HP press release (Aug 18, 2011); Deloitte due diligence report findings (cited in SEC complaint); HP Board meeting minutes (summarized in proxy filings)
Red flags detectable at decision time
- Paying 12.6x revenue for a software company — extreme multiple requires extreme certainty about revenue quality
- Internal due diligence flagged hardware revenue classified as software — a fundamental accounting concern dismissed by leadership
- CEO framing Autonomy as "a different kind of platform company" without quantitative justification — vague strategic narrative overriding financial analysis
- Deal negotiated rapidly under time pressure after Dell's interest in Autonomy was rumored — competitive urgency distorting valuation discipline
Cognitive biases the platform would have flagged
Hypothetical analysis
DI Platform would flag: CRITICAL confirmation bias — leadership dismissing internal DD red flags that contradict the strategic thesis. The revenue classification concern is not a minor discrepancy but a fundamental question about whether the business being acquired is actually a software business. Authority bias: CEO Apotheker's conviction overriding expert due diligence findings. Sunk cost: months of deal preparation creating momentum toward closing despite emerging negative signals. Toxic combination "Echo Chamber + Sunk Ship" detected. Recommendation: HALT the deal until an independent third-party auditor re-evaluates Autonomy's revenue breakdown. The due diligence red flags warrant a minimum 60-day pause for forensic accounting review.
Biases present in the decision
Toxic combinations
- Echo Chamber
- Sunk Ship
Reference class base rates
Across all 146 curated case studies in our library:
Lessons learned
- When due diligence flags accounting irregularities, dismissing those warnings because of strategic conviction is a textbook confirmation bias failure.
- Paying extreme revenue multiples requires extreme certainty about the quality of those revenues — not the opposite.
- The sunk cost of months of deal negotiation can create momentum that overrides rational assessment of new negative information.
Source: HP SEC filing (8-K, November 20, 2012); Autonomy acquisition proxy statement (2011); U.S. v. Sushovan Hussain, N.D. Cal. No. 16-cr-00462 (SEC Filing)
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