# DGX: Quest Diagnostics Inc.

- Industry: Services-Medical Laboratories
- Current price: $246.45
- Price updated: Sep 19, 2026
- Total congressional trades: 8
- Politicians trading: 4
- Last traded: Mar 30, 2026
- Source: https://tryglasshouse.ai/companies/DGX.md

Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 97% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,400 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.

# Congressional trading history

- Page: 1 of 1
- Results: 8 of 8
- Pagination query parameter: `page`

## 1. Julie Johnson

- Member: Democrat, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Oct 30, 2025, disclosed Aug 5, 2026
- Market context: $175.75 at trade, $246.45 current (+40.23%)
- Politician: https://tryglasshouse.ai/politicians/J000310.md
- Record: https://tryglasshouse.ai/trades/4470160b-03ae-4213-a618-1bf0d4bb8a3f.md

## 2. Julie Johnson

- Member: Democrat, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Oct 30, 2025, disclosed Aug 5, 2026
- Market context: $175.75 at trade, $246.45 current (+40.23%)
- Politician: https://tryglasshouse.ai/politicians/J000310.md
- Record: https://tryglasshouse.ai/trades/733629d9-7446-497f-87c2-c08bd5db56c1.md

## 3. Alan Armstrong

- Member: Republican, Senate
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Mar 30, 2026, disclosed Jul 21, 2026
- Market context: $197.16 at trade, $246.45 current (+25.00%)
- Politician: https://tryglasshouse.ai/politicians/A000383.md
- Record: https://tryglasshouse.ai/trades/4f7f7c1c-2cb6-440b-bebd-938b17f4f439.md

## 4. Alan Armstrong

- Member: Republican, Senate
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Mar 27, 2026, disclosed Jul 21, 2026
- Market context: $195.51 at trade, $246.45 current (+26.05%)
- Politician: https://tryglasshouse.ai/politicians/A000383.md
- Record: https://tryglasshouse.ai/trades/1e75c140-48fc-4825-b207-77a77e1b1495.md

## 5. Julia Letlow

- Member: Republican, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Jul 24, 2025, disclosed Jan 13, 2026
- Market context: $171.9 at trade, $246.45 current (+43.37%)
- Politician: https://tryglasshouse.ai/politicians/L000595.md
- Record: https://tryglasshouse.ai/trades/44e07d6e-69a7-4468-8899-9967c76bfc94.md

## 6. Julia Letlow

- Member: Republican, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Apr 28, 2025, disclosed Jan 13, 2026
- Market context: $176.68 at trade, $246.45 current (+39.49%)
- Politician: https://tryglasshouse.ai/politicians/L000595.md
- Record: https://tryglasshouse.ai/trades/a501c2a9-c5a4-4e4f-8deb-a0df5b4ed8d9.md

## 7. Julie Johnson

- Member: Democrat, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Nov 3, 2025, disclosed Dec 11, 2025
- Market context: $178.84 at trade, $246.45 current (+37.80%)
- Politician: https://tryglasshouse.ai/politicians/J000310.md
- Record: https://tryglasshouse.ai/trades/10fd2ce8-b4e9-48c4-8ab0-e9e0697887fc.md

## 8. Carol D. Miller

- Member: Republican, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Mar 10, 2025, disclosed Apr 11, 2025
- Market context: $173.12 at trade, $246.45 current (+42.36%)
- Politician: https://tryglasshouse.ai/politicians/M001205.md
- Record: https://tryglasshouse.ai/trades/087a96bb-33e5-4b08-8378-83544f1d3040.md



Prices and percentage changes are market context, not portfolio returns. This information is not financial advice.