David Duffield Insider Trading Activity
David Duffield has been net-selling over the last 12 months with 0 purchases and 134 sales across 1 company.
WDAY is the most-traded position with 134 trades. The largest single transaction was a sale of WDAY for $11.9M on Dec 16, 2025.
Performance Scorecard
Forward stock performance after each transaction by David Duffield. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | +0.4% | 63% | 178 |
| 90 days | — | +0.4% | 69% | 169 |
| 120 days | — | +9.6% | 75% | 144 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersWDAY · Workday, Inc.
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Showing the 50 most recent of 198 disclosed trades.
| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Oct 6, 2026 | WDAY | Sell | 10,054 | $187.77 | $1.9M | −6.9% | 10%+ Owner | |
Oct 6, 2026 | WDAY | Sell | 45,984 | $186.66 | $8.6M | −24.1% | 10%+ Owner | |
Oct 6, 2026 | WDAY | Sell | 10,284 | $185.86 | $1.9M | −5.1% | 10%+ Owner | |
Oct 6, 2026 | WDAY | Sell | 2,800 | $184.80 | $517K | −1.4% | 10%+ Owner | |
Oct 6, 2026 | WDAY | Sell | 10,572 | $189.39 | $2.0M | −9.1% | 10%+ Owner | |
Oct 6, 2026 | WDAY | Sell | 19,534 | $188.64 | $3.7M | −14.5% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 1,700 | $185.78 | $316K | −0.9% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 1,904 | $184.67 | $352K | −1.0% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 2,000 | $182.67 | $365K | −1.0% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 3,496 | $183.88 | $643K | −1.7% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 3,904 | $190.60 | $744K | −3.6% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 23,095 | $189.84 | $4.4M | −17.5% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 37,993 | $188.94 | $7.2M | −22.3% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 23,779 | $188.13 | $4.5M | −12.3% | 10%+ Owner | |
Sep 28, 2026 | WDAY | Sell | 1,100 | $186.80 | $205K | −0.6% | 10%+ Owner | |
Sep 10, 2026 | WDAY | Sell | 2,493 | $187.75 | $468K | −2.3% | 10%+ Owner | |
Sep 10, 2026 | WDAY | Sell | 22,388 | $187.05 | $4.2M | −17.2% | 10%+ Owner | |
Sep 10, 2026 | WDAY | Sell | 24,465 | $186.26 | $4.6M | −15.8% | 10%+ Owner | |
Sep 10, 2026 | WDAY | Sell | 23,551 | $184.98 | $4.4M | −13.2% | 10%+ Owner | |
Sep 10, 2026 | WDAY | Sell | 27,883 | $184.33 | $5.1M | −13.5% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 100 | $138.98 | $14K | −0.1% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 1,400 | $130.63 | $183K | −0.7% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 1,800 | $132.07 | $238K | −0.9% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 1,700 | $133.12 | $226K | −0.8% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 500 | $134.01 | $67K | −0.2% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 14,299 | $135.48 | $1.9M | −6.9% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 27,858 | $136.41 | $3.8M | −14.4% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 39,133 | $137.19 | $5.4M | −23.7% | 10%+ Owner | |
Jul 9, 2026 | WDAY | Sell | 20,710 | $138.34 | $2.9M | −16.5% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 13,550 | $130.81 | $1.8M | −6.4% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 2,106 | $129.82 | $273K | −1.0% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 11,348 | $131.79 | $1.5M | −5.8% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 7,953 | $132.73 | $1.1M | −4.3% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 2,476 | $133.99 | $332K | −1.4% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 7,098 | $134.65 | $956K | −4.1% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 3,417 | $135.80 | $464K | −2.0% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 15,869 | $136.90 | $2.2M | −9.6% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 43,583 | $137.75 | $6.0M | −29.3% | 10%+ Owner | |
Jul 6, 2026 | WDAY | Sell | 100 | $138.30 | $14K | −0.1% | 10%+ Owner | |
Jun 25, 2026 | WDAY | Sell | 17,064 | $116.95 | $2.0M | −12.8% | 10%+ Owner | |
Jun 25, 2026 | WDAY | Sell | 9,739 | $118.03 | $1.1M | −8.4% | 10%+ Owner | |
Jun 25, 2026 | WDAY | Sell | 1,800 | $118.76 | $214K | −1.7% | 10%+ Owner | |
Jun 25, 2026 | WDAY | Sell | 30,074 | $114.14 | $3.4M | −14.1% | 10%+ Owner | |
Jun 25, 2026 | WDAY | Sell | 28,998 | $114.98 | $3.3M | −15.9% | 10%+ Owner | |
Jun 25, 2026 | WDAY | Sell | 19,825 | $116.06 | $2.3M | −12.9% | 10%+ Owner | |
Jun 22, 2026 | WDAY | Sell | 3,900 | $116.16 | $453K | −2.9% | 10%+ Owner | |
Jun 22, 2026 | WDAY | Sell | 10,587 | $117.20 | $1.2M | −8.2% | 10%+ Owner | |
Jun 22, 2026 | WDAY | Sell | 7,602 | $118.15 | $898K | −6.4% | 10%+ Owner | |
Jun 22, 2026 | WDAY | Sell | 4,151 | $119.05 | $494K | −3.7% | 10%+ Owner | |
Jun 22, 2026 | WDAY | Sell | 1,540 | $119.84 | $185K | −1.4% | 10%+ Owner |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| WDAY | Workday, Inc. | 198 | $520.0M |
Other insiders at Workday, Inc.
8 other tracked filers at WDAY.