DGXQuest Diagnostics Incorporated
Healthcare · Diagnostics & ResearchNYSEStockMkt cap $26.2B
Disclosed trades
30
0 in 30d · 0 in 90d
Politicians
12
Last trade Mar 30, 2026
Buys
12
$120.5K at range midpoints
Sells
17
$301K at range midpoints
Closing price · 365 days
Sep 24, 2025 – Sep 23, 2026
Monthly buys vs sells · 24 months
Counts of disclosed transactions
- Buys
- Sells (incl. partial)
Politicians who traded it
4 hold it now Estimated
| Politician | Seat | Trades | Buys | Sells | Bought (mid) | Sold (mid) | Last trade | Est. position Estimated |
|---|---|---|---|---|---|---|---|---|
| RMichael T. McCaul | House · TX-10 | 6 | 2 | 3 | $16K | $73K | Feb 7, 2022 | — |
| RCarol D. Miller | House · WV-01 | 4 | 2 | 2 | $40.5K | $40.5K | Mar 10, 2025 | $12K |
| DEarl Blumenauer | House · OR-03 | 3 | 1 | 2 | $8K | $16K | Apr 4, 2024 | — |
| DJulie Johnson | House · TX-32 | 3 | 1 | 2 | $8K | $16K | Nov 3, 2025 | $183 |
| RTommy Tuberville | Senate · AL | 3 | 1 | 2 | $8K | $40.5K | Jan 3, 2024 | — |
| RAlan Armstrong | Senate · OK | 2 | 2 | 0 | $16K | $0 | Mar 30, 2026 | $19K |
| RJulia Letlow | House · LA-05 | 2 | 1 | 1 | $8K | $8K | Jul 24, 2025 | — |
| DKathy E. Manning | House · NC-06 | 2 | 1 | 1 | $8K | $8K | Aug 3, 2022 | $310 |
| DRo Khanna | House · CA-17 | 2 | 1 | 1 | $8K | $8K | Feb 13, 2024 | — |
| DDean Phillips | House · MN-03 | 1 | 0 | 1 | $0 | $8K | Jun 1, 2020 | — |
| DGilbert Ray Cisneros, Jr. | House · CA-31 | 1 | 0 | 1 | $0 | $8K | Jan 24, 2025 | — |
| DSara Jacobs | House · CA-51 | 1 | 0 | 1 | $0 | $75K | Apr 9, 2021 | — |
Recent trades
| Politician | Ticker | Asset | Type | Owner | Amount | Traded | Filed | Source |
|---|---|---|---|---|---|---|---|---|
| RCarol D. Miller | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Sell | Spouse | $15,001 - $50,000 | Mar 10, 2025 | Aug 13, 2026521d | Filing |
| DJulie Johnson | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Buy | Joint | $1,001 - $15,000 | Oct 30, 2025 | Aug 5, 2026279d | Filing |
| DJulie Johnson | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Sell | Joint | $1,001 - $15,000 | Oct 30, 2025 | Aug 5, 2026279d | Filing |
| RAlan Armstrong | DGX | Quest Diagnostics Incorporated Common Stock | Buy | Self | $1,001 - $15,000 | Mar 30, 2026 | Jul 21, 2026113d | Filing |
| RAlan Armstrong | DGX | Quest Diagnostics Incorporated Common Stock | Buy | Self | $1,001 - $15,000 | Mar 27, 2026 | Jul 21, 2026116d | Filing |
| RJulia Letlow | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Sell | Self | $1,001 - $15,000 | Jul 24, 2025 | Jan 13, 2026173d | Filing |
| RJulia Letlow | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Buy | Self | $1,001 - $15,000 | Apr 28, 2025 | Jan 13, 2026260d | Filing |
| DJulie Johnson | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Sell | Joint | $1,001 - $15,000 | Nov 3, 2025 | Dec 11, 202538d | Filing |
| RCarol D. Miller | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Sell | Self | $1,001 - $15,000 | Mar 10, 2025 | Apr 11, 202532d | Filing |
| DGilbert Ray Cisneros, Jr. | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Partial | Self | $1,001 - $15,000 | Jan 24, 2025 | Feb 11, 202518d | Filing |
| DEarl Blumenauer | DGX | Quest Diagnostics Incorporated Common Stock (DGX) | Sell | Spouse | $1,001 - $15,000 | Apr 4, 2024 | May 4, 202430d | Filing |
| DRo Khanna | DGX | QUEST DIAGNOSTICS INCORPORATED | SellReview | Unknown | $1,001 - $15,000 | Feb 13, 2024 | Mar 6, 202422d | FilingOCR |
| RTommy Tuberville | DGX | Quest Diagnostics Incorporated Common Stock | Partial | Joint | $15,001 - $50,000 | Jan 3, 2024 | Feb 14, 202442d | Filing |
| DRo Khanna | DGX | QUEST DIAGNOSTICS INCORPORATED | Buy | Spouse | $1,001 - $15,000 | Jun 29, 2023 | Jul 11, 202312d | FilingOCR |
| RCarol D. Miller | DGX | Quest Diagnostics Incorporated (DGX) | Buy | Self | $1,001 - $15,000 | Nov 14, 2022 | Dec 13, 202229d | Filing |
| DKathy E. Manning | DGX | Quest Diagnostics Incorporated (DGX) | Sell | Joint | $1,001 - $15,000 | Aug 3, 2022 | Sep 14, 202242d | Filing |
| RCarol D. Miller | DGX | Quest Diagnostics Incorporated (DGX) | Buy | Spouse | $15,001 - $50,000 | Jul 28, 2021 | Sep 2, 2022401d | Filing |
| DKathy E. Manning | DGX | Quest Diagnostics Incorporated (DGX) | Buy | Joint | $1,001 - $15,000 | Jul 20, 2022 | Aug 10, 202221d | Filing |
| DEarl Blumenauer | DGX | Quest Diagnostics Incorporated (DgX) | Sell | Self | $1,001 - $15,000 | Mar 14, 2022 | Apr 1, 202218d | Filing |
| DEarl Blumenauer | DGX | Quest Diagnostics Incorporated (DgX) | Buy | Self | $1,001 - $15,000 | Feb 24, 2022 | Apr 1, 202236d | Filing |
| RMichael T. McCaul | DGX | QUEST DIAGNOSTICS INC | SellReview | Unknown | $15,001 - $50,000 | Feb 7, 2022 | Feb 23, 202216d | FilingOCR |
| RMichael T. McCaul | DGX | QUEST DIAGNOSTICS INC | SellReview | Unknown | $15,001 - $50,000 | Feb 7, 2022 | Feb 23, 202216d | FilingOCR |
| RMichael T. McCaul | DGX | QUEST DIAGNOSTICS INC | UnknownReview | Unknown | $1,001 - $15,000 | — | Jan 27, 2022 | FilingOCR |
| RMichael T. McCaul | DGX | QUEST DIAGNOSTICS INC | SellReview | Unknown | $1,001 - $15,000 | — | Jan 27, 2022 | FilingOCR |
| RTommy Tuberville | DGX | Quest Diagnostics Incorporated Common Stock | Sell | Joint | $1,001 - $15,000 | Sep 29, 2021 | Oct 15, 202116d | Filing |
| RTommy Tuberville | DGX | Quest Diagnostics Incorporated | Buy | Joint | $1,001 - $15,000 | Mar 29, 2021 | Jul 23, 2021116d | Filing |
| DSara Jacobs | DGX | Quest Diagnostics Incorporated (DgX) | Sell | Self | $50,001 - $100,000 | Apr 9, 2021 | May 28, 202149d | Filing |
| DDean Phillips | DGX | Quest Diagnostics Incorporated (DgX) | Partial | Self | $1,001 - $15,000 | Jun 1, 2020 | Jul 7, 202036d | Filing |
| RMichael T. McCaul | DGX | QUEST DIAGNOSTICS INC | BuyReview | Unknown | $1,001 - $15,000 | May 6, 2020 | May 18, 202012d | FilingOCR |
| RMichael T. McCaul | DGX | QUEST DIAGNOSTICS INC | BuyReview | Unknown | $1,001 - $15,000 | — | May 18, 2020 | FilingOCR |
Insider activity Filed
Insiders
19
Services-Medical Laboratories
Open-market buys · 90d
0
$0 bought
Open-market sells · 90d
5
$8.3M sold
Net · 90d
-$8.3M
-$42.6M net over 12 months · last Sep 1, 2026
| Date | Insider | Kind | Security | Shares | Price | Value | Post-holdings | D/I | 10b5-1 | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026filed Sep 3, 2026 | J. E. DavisCEO and President | Sale | Common Stock | −10,000 | $242.72 | $2,427,200 | 122,423 | D | 10b5-1 | 4 |
| Aug 28, 2026filed Aug 31, 2026 | Michael E PrevoznikSVP & General Counsel | Exercise | Non-Qualifed Stock Option (right to buy)deriv. | −22,677 | $112.17 | — | 0 | D | 10b5-1 | 4 |
| Aug 28, 2026filed Aug 31, 2026 | Michael E PrevoznikSVP & General Counsel | Gift | Common Stock | −1,000 | $0.00 | $0 | 36,557 | D | 10b5-1 | 4 |
| Aug 28, 2026filed Aug 31, 2026 | Michael E PrevoznikSVP & General Counsel | Sale | Common Stock | −430 | $244.51 | $105,141 | 37,557 | D | 10b5-1 | 4 |
| Aug 28, 2026filed Aug 31, 2026 | Michael E PrevoznikSVP & General Counsel | Sale | Common Stock | −6,237 | $243.63 | $1,519,505 | 37,987 | D | 10b5-1 | 4 |
| Aug 28, 2026filed Aug 31, 2026 | Michael E PrevoznikSVP & General Counsel | Sale | Common Stock | −16,010 | $242.88 | $3,888,437 | 44,224 | D | 10b5-1 | 4 |
| Aug 28, 2026filed Aug 31, 2026 | Michael E PrevoznikSVP & General Counsel | Exercise | Common Stock | 22,677 | $112.17 | $2,543,679 | 60,234 | D | 10b5-1 | 4 |
| Jul 28, 2026filed Jul 29, 2026 | Mark E DelaneySVP & Chief Commercial Officer | Sale | Common Stock | −1,600 | $235.18 | $376,288 | 10,335 | D | 10b5-1 | 4 |
| Jul 22, 2026filed Jul 27, 2026 | Karthik KuppusamySVP, Clinical Solutions | Other | Common Stock | 37 | $206.81 | $7,652 | 13,557 | D | — | 4 |
| Jul 22, 2026filed Jul 27, 2026 | Robert B Carter | Other | Common Stock | 11 | $206.80 | $2,275 | 3,864 | D | — | 4 |
Shares, prices and post-transaction holdings are exactly as reported on SEC Form 4. Net figures count open-market buys minus open-market sales only (awards, exercises, withholding and gifts are excluded).
Unusual activity Estimated
- 65Insider overlapMar 30, 2026
Sen. Alan Armstrong bought DGX 28 days after its CEO sold $2.1M
Details
- Politician
- Alan Armstrong
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock
- Tx type
- buy
- Tx date
- Mar 30, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 113
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2026-03-02","shares":10000,"price":212.52,"value":2125200,"is_10b5_1":true}
- Days between
- 28
- Opposite side
- Yes
- 65Insider overlapMar 27, 2026
Sen. Alan Armstrong bought DGX 25 days after its CEO sold $2.1M
Details
- Politician
- Alan Armstrong
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock
- Tx type
- buy
- Tx date
- Mar 27, 2026
- Filing date
- Jul 21, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 116
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2026-03-02","shares":10000,"price":212.52,"value":2125200,"is_10b5_1":true}
- Days between
- 25
- Opposite side
- Yes
- 28Exec saleNov 25, 2025
DGX CEO J. E. Davis sold $7.9M (10b5-1 plan)
Details
- Insider
- J. E. Davis
- Company
- QUEST DIAGNOSTICS INC
- Ticker
- DGX
- Tx kind
- open_market_sale
- Tx date
- Nov 25, 2025
- Shares
- 41,004
- Price
- $192
- Value
- $7.9M
- Is 10b5 1
- Yes
- 50Insider overlapNov 3, 2025
Rep. Julie Johnson sold DGX 22 days before its CEO sold $7.9M
Details
- Politician
- Julie Johnson
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock (DGX)
- Tx type
- sell
- Tx date
- Nov 3, 2025
- Filing date
- Dec 11, 2025
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 38
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2025-11-25","shares":41004,"price":192.2715,"value":7883900.59,"is_10b5_1":true}
- Days between
- -22
- Opposite side
- No
- 65Insider overlapOct 30, 2025
Rep. Julie Johnson bought DGX 26 days before its CEO sold $7.9M
Details
- Politician
- Julie Johnson
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock (DGX)
- Tx type
- buy
- Tx date
- Oct 30, 2025
- Filing date
- Aug 5, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 279
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2025-11-25","shares":41004,"price":192.2715,"value":7883900.59,"is_10b5_1":true}
- Days between
- -26
- Opposite side
- Yes
- 50Insider overlapOct 30, 2025
Rep. Julie Johnson sold DGX 26 days before its CEO sold $7.9M
Details
- Politician
- Julie Johnson
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock (DGX)
- Tx type
- sell
- Tx date
- Oct 30, 2025
- Filing date
- Aug 5, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 279
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2025-11-25","shares":41004,"price":192.2715,"value":7883900.59,"is_10b5_1":true}
- Days between
- -26
- Opposite side
- No
- 65Insider overlapApr 28, 2025
Rep. Julia Letlow bought DGX 26 days after its CEO sold $1.2M
Details
- Politician
- Julia Letlow
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock (DGX)
- Tx type
- buy
- Tx date
- Apr 28, 2025
- Filing date
- Jan 13, 2026
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 260
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2025-04-02","shares":7249,"price":167.8638,"value":1216844.69,"is_10b5_1":true}
- Days between
- 26
- Opposite side
- Yes
- 50Insider overlapMar 10, 2025
Rep. Carol D. Miller sold DGX 23 days before its CEO sold $1.2M
Details
- Politician
- Carol D. Miller
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock (DGX)
- Tx type
- sell
- Tx date
- Mar 10, 2025
- Filing date
- Apr 11, 2025
- Amount low
- $1,001
- Amount high
- $15,000
- Amount mid
- $8,001
- Disclosed range
- $1,001 - $15,000
- Reporting lag days
- 32
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2025-04-02","shares":7249,"price":167.8638,"value":1216844.69,"is_10b5_1":true}
- Days between
- -23
- Opposite side
- No
- 50Insider overlapMar 10, 2025
Rep. Carol D. Miller sold DGX 23 days before its CEO sold $1.2M
Details
- Politician
- Carol D. Miller
- Ticker
- DGX
- Asset
- Quest Diagnostics Incorporated Common Stock (DGX)
- Tx type
- sell
- Tx date
- Mar 10, 2025
- Filing date
- Aug 13, 2026
- Amount low
- $15,001
- Amount high
- $50,000
- Amount mid
- $32,501
- Disclosed range
- $15,001 - $50,000
- Reporting lag days
- 521
- Is whale
- No
- Insider trade
- {"insider":{"slug":"j-e-davis","name":"J. E. Davis","title":"CEO and President","short_title":"CEO"},"company":"QUEST DIAGNOSTICS INC","ticker":"DGX","tx_kind":"open_market_sale","tx_date":"2025-04-02","shares":7249,"price":167.8638,"value":1216844.69,"is_10b5_1":true}
- Days between
- -23
- Opposite side
- No
- 43Committee overlapMar 10, 2025
Rep. Carol D. Miller sold $15,001–$50,000 of DGX while sitting on House Ways and Means
Details
- Committee
- House Committee on Ways and Means
- Leadership seat
- No
- Sector
- Healthcare
- Disclosed range
- $15,001 - $50,000