Person profile
Co-founder of Workday and founder of PeopleSoft
"Valued as of" is the effective date of the market closes, exchange rates, and filings inside the estimate. "Sources checked" is when the pipeline last verified those sources successfully. A weekend check can confirm a Friday valuation without inventing weekend movement.
As of September 4, 2026, David Duffield's estimated net worth is about $7.2B(7.2 billion US dollars). That places David Duffield at #24 among the people Net Worth Leader currently tracks.
This is an estimate of assets minus documented liabilities. It is not a cash balance, and many holdings may be restricted, pledged, illiquid, or difficult to value.
David Duffield founded PeopleSoft in 1987, sold it to Oracle in 2005 after a hostile takeover, and co-founded Workday the same year. His estimate values the Workday Class B shares he still reports as a more than 10 percent holder, at the Class A price.
Duffield built PeopleSoft into a leading human-resources software vendor, then applied the same playbook to cloud software with Aneel Bhusri at Workday, which listed in 2012. He has since founded Ridgeline, a private fintech company that is not valued here.
The estimate tracks Workday's share price. Gifts reported in Forms 4 lower the Class B count over time.
David Duffield's estimate declined mainly because Workday, Inc. shares decreased from the prior comparable close.
A one-day estimate change is not the same as income, profit, or a realized gain or loss.
| Component | Class | Ownership | Valuation basis | Central value | Supported range | Evidence date | Price date | Sources | Freshness |
|---|---|---|---|---|---|---|---|---|---|
| Workday Class B common stock held directly (converts one-for-one into Class A)Workday, Inc. (WDAY, Class A common stock) | listed equity | direct (36,453,834 units) | Listed close | 7.1 billion US dollars | Priced value | [1] David A. Duffield, Form 4 (Workday, Inc.), [2] Daily unadjusted closing prices, chart endpoint | current | ||
| Workday Class A common stock held directlyWorkday, Inc. (WDAY, Class A common stock) | listed equity | direct (105,049 units) | Listed close | 20.6 million US dollars | Priced value | [1] David A. Duffield, Form 4 (Workday, Inc.), [2] Daily unadjusted closing prices, chart endpoint | current |
Liabilities without a documented value are never shown as zero; they are simply not included, and that limitation is part of source coverage below.
100.0% of this profile's modeled gross value is supported by Tier 1 or Tier 2 evidence (primary filings, official documents, licensed market data, or audited accounts). The profile carries a strong coverage label.
No meaningful range beyond the central estimate is supported for this profile, so only the central value is published. Unknown liabilities are not evidence that no liabilities exist. No personal liability is documented for this profile, so none is deducted.
The timeline runs from June 12, 2026 to September 4, 2026; the latest estimate is higher than the first point. Points before August 20, 2026 are labeled modeled reconstructions: today's reviewed ownership records applied to the closing prices of each earlier market date. Published history begins August 20, 2026 and grows one point per completed market date.
| Estimate date | Central estimate | Basis |
|---|---|---|
| 7.2 billion US dollars | Published snapshot | |
| 7.6 billion US dollars | Published snapshot | |
| 7.3 billion US dollars | Published snapshot | |
| 7.3 billion US dollars | Published snapshot | |
| 7.2 billion US dollars | Published snapshot | |
| 7.2 billion US dollars | Published snapshot | |
| 7.3 billion US dollars | Modeled reconstruction | |
| 7.0 billion US dollars | Modeled reconstruction | |
| 7.0 billion US dollars | Modeled reconstruction | |
| 7.3 billion US dollars | Modeled reconstruction | |
| 7.5 billion US dollars | Modeled reconstruction | |
| 6.4 billion US dollars | Modeled reconstruction | |
| 6.6 billion US dollars | Modeled reconstruction | |
| 6.7 billion US dollars | Modeled reconstruction | |
| 6.6 billion US dollars | Modeled reconstruction | |
| 6.2 billion US dollars | Modeled reconstruction | |
| 6.2 billion US dollars | Modeled reconstruction | |
| 6.3 billion US dollars | Modeled reconstruction | |
| 6.0 billion US dollars | Modeled reconstruction | |
| 5.8 billion US dollars | Modeled reconstruction | |
| 6.1 billion US dollars | Modeled reconstruction | |
| 5.8 billion US dollars | Modeled reconstruction | |
| 5.4 billion US dollars | Modeled reconstruction | |
| 4.9 billion US dollars | Modeled reconstruction | |
| 4.7 billion US dollars | Modeled reconstruction | |
| 5.4 billion US dollars | Modeled reconstruction | |
| 5.3 billion US dollars | Modeled reconstruction | |
| 5.3 billion US dollars | Modeled reconstruction | |
| 5.2 billion US dollars | Modeled reconstruction | |
| 5.1 billion US dollars | Modeled reconstruction | |
| 5.3 billion US dollars | Modeled reconstruction | |
| 5.1 billion US dollars | Modeled reconstruction | |
| 5.1 billion US dollars | Modeled reconstruction | |
| 5.0 billion US dollars | Modeled reconstruction | |
| 5.3 billion US dollars | Modeled reconstruction | |
| 5.0 billion US dollars | Modeled reconstruction | |
| 5.0 billion US dollars | Modeled reconstruction | |
| 4.8 billion US dollars | Modeled reconstruction | |
| 4.5 billion US dollars | Modeled reconstruction | |
| 4.5 billion US dollars | Modeled reconstruction | |
| 4.5 billion US dollars | Modeled reconstruction | |
| 4.2 billion US dollars | Modeled reconstruction | |
| 4.3 billion US dollars | Modeled reconstruction | |
| 4.2 billion US dollars | Modeled reconstruction | |
| 4.1 billion US dollars | Modeled reconstruction | |
| 4.3 billion US dollars | Modeled reconstruction | |
| 4.5 billion US dollars | Modeled reconstruction | |
| 4.6 billion US dollars | Modeled reconstruction | |
| 4.7 billion US dollars | Modeled reconstruction | |
| 4.8 billion US dollars | Modeled reconstruction |
On paper, David Duffield's estimated net worth is equivalent to about 144,000 average-priced new vehicles.
Reference value $49,855, effective 2026-07-31. Kelley Blue Book / Cox Automotive
Uses the Kelley Blue Book and Cox Automotive industry estimate of the average new-vehicle transaction price for July 2026. It is an estimate of what buyers paid, not a list price.
On paper, David Duffield's estimated net worth is equivalent to about 109,000 years of median full-time US pay.
Reference value $65,416, effective 2026-06-30. U.S. Bureau of Labor Statistics
Uses the BLS median usual weekly earnings of full-time wage and salary workers for the second quarter of 2026 ($1,258, seasonally adjusted) multiplied by 52 weeks, before taxes.
Split evenly across every New York City resident, the estimate works out to about $834 per person.
Cited population 8,580,000, effective 2025-07-01. U.S. Census Bureau Population Estimates Program, published by the NYC Department of City Planning
Divides the estimate evenly across the Census Bureau's July 1, 2025 estimate for New York City. Arithmetic only.
These three comparisons are stable for this profile.Browse the full perspective catalog orcompare David Duffield with someone else.
Share counts come from his July 13, 2026 Form 4. Ridgeline and other private holdings are excluded because no transaction documents their value.
Identity facts stored separately for this profile: citizenship United States; residence United States; ranking attribution United States. Attribution reason: Citizenship, residence, and the headquarters of the companies that drive the estimate are all in the United States.
Reviewed by Net Worth Leader editorial desk on August 20, 2026. General rules live in the methodology.
See something wrong? Report a correction. Evidence is evaluated on its merits, not on who submits it.
