Congress Trades in Quest Diagnostics Incorporated (DGX)
8 members of Congress have disclosed trading DGX.
8 members of Congress have disclosed trading Quest Diagnostics Incorporated (DGX), with 12 transactions in total — 4 purchases and 8 sales worth an estimated $96,000 at range midpoints, leaning heavily toward selling. The most active DGX trader is Julie Johnson (2 disclosures). The most recent disclosed DGX trade was on Oct 30, 2025. Across the 1 disclosed DGX purchase we can price, the average return since disclosure is +27.3% (information only, not advice). See our full DGX fundamentals page for price, valuation and a return calculator.
Corporate insiders in DGX
It's not just Congress — here's what DGX's own executives and directors have done with the stock recently, from SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Jul 28, 2026 | Delaney Mark E | SVP & Chief Commercial Officer | Sell | 1,600 | $376,288 |
| Jun 4, 2026 | Kuppusamy Karthik | SVP, Clinical Solutions | Sell | 8,147 | $1.6M |
| Jun 1, 2026 | Davis J. E. | CEO and President | Sell | 10,000 | $1.9M |
Every disclosed DGX trade
| Disclosed | Politician | Type | Amount | Traded | |
|---|---|---|---|---|---|
| Nov 6, 2025 | Julie Johnson D | Sale | $1,001 - $15,000 | Oct 30, 2025 | filing ↗ |
| Nov 6, 2025 | Julie Johnson D | Purchase | $1,001 - $15,000 | Oct 30, 2025 | filing ↗ |
| Aug 11, 2025 | Julia Letlow R | Sale | $1,001 - $15,000 | Jul 24, 2025 | filing ↗ |
| Apr 11, 2025 | Carol Devine Miller R | Sale | $1,001 - $15,000 | Mar 10, 2025 | filing ↗ |
| May 3, 2024 | Earl Blumenauer D | Sale | $1,001 - $15,000 | Apr 4, 2024 | filing ↗ |
| Apr 2, 2020 | Earl Blumenauer D | Purchase | $1,001 - $15,000 | Mar 2, 2020 | filing ↗ |
| Feb 5, 2020 | Dean Phillips D | Purchase | $1,001 - $15,000 | Jan 17, 2020 | filing ↗ |
| Jun 7, 2019 | Dean Phillips D | Purchase | $1,001 - $15,000 | May 3, 2019 | filing ↗ |
| Sep 15, 2016 | K. Michael Conaway R | Sale | $1,001 - $15,000 | Sep 12, 2016 | filing ↗ |
| Jun 20, 2016 | Lois Frankel D | Sale | $1,001 - $15,000 | Jun 20, 2016 | filing ↗ |
| Nov 6, 2014 | Richard L. Hanna R | Sale | $1,001 - $15,000 | Oct 15, 2014 | filing ↗ |
| Jan 9, 2014 | Richard L. Hanna R | Sale | $1,001 - $15,000 | Dec 30, 2013 | filing ↗ |
Most active DGX traders in Congress
Julie Johnson
Democrat
2 trades
Earl Blumenauer
Democrat
2 trades
Dean Phillips
Democrat
2 trades
Richard L. Hanna
Republican
2 trades
Julia Letlow
Republican
1 trade
Carol Devine Miller
Republican
1 trade
K. Michael Conaway
Republican
1 trade
Lois Frankel
Democrat
1 trade
Source: US House Clerk Periodic Transaction Reports. Amounts are disclosed as ranges; estimates use range midpoints. Data may be delayed or contain filer errors. Updated Aug 13, 2026. Not investment advice.