Quest Diagnostics Incorporated DGX

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Quest Diagnostics Incorporated Common Stock · Company · NYSE

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 178.24 → 209.83 · 17.7%
216.020191.715167.410 1 2 3,4 5 6 7 8 9,10 11 12 13 14 15 16 17 18 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
18 · 8-K Pre-market · 02:46 ET 8-K ↗
207.1300 212.3000 205.4125 209.8300 1,833,371
206.1600 208.0100 204.1000 206.8400 691,900
208.6100 211.0000 205.6100 207.6600 822,900
Weekend
Weekend
210.9500 214.4000 209.4100 210.6800 955,500
201.0000 209.5600 201.0000 209.4100 991,700
204.6800 206.4100 201.1200 201.7700 1,193,200
202.8000 208.5200 201.1300 206.0000 865,900
207.4800 210.7600 207.0100 207.3500 568,900
Weekend
Weekend
208.2500 209.8600 207.0300 207.4400 614,800
210.2000 210.2000 206.3400 208.0500 621,100
210.7400 210.7400 207.2300 208.2100 773,700
216.8900 219.2000 212.1200 212.3800 981,100
215.6400 216.5200 212.5700 213.4500 745,900
Weekend
Weekend
No trading
217.0700 217.4100 214.9400 215.7200 869,700
213.6700 216.8700 211.4000 216.0200 1,004,100
212.8900 214.2100 210.6700 211.9500 847,800
207.9700 212.7600 206.9800 212.6400 786,300
Weekend
Weekend
207.9700 209.8900 206.5500 209.8800 1,349,700
203.1400 207.8500 203.1400 206.2400 632,400
198.4100 205.7600 198.4100 203.1100 1,135,600
195.7800 197.7900 194.1500 197.1800 988,000
194.1300 195.1600 192.9000 193.5800 904,800
Weekend
Weekend
No trading
196.6900 197.4400 192.8300 195.0000 1,292,200
200.0000 201.0400 196.5000 197.7600 754,200
203.0300 204.7000 199.6600 201.0400 1,020,300
202.2500 203.2000 200.3700 202.1800 1,009,300
Weekend
Weekend
205.5300 205.9600 202.3800 203.0600 898,800
204.0700 207.5000 202.5400 203.8300 1,079,900
203.3500 207.3000 202.9700 203.7800 786,600
197.9000 204.8400 196.9900 204.5300 747,100
202.0800 202.0800 196.7000 197.2100 821,700
Weekend
Weekend
197.4100 201.5400 197.3100 200.2900 816,200
194.9900 201.9900 194.9900 196.1200 735,900
193.0000 195.2100 192.3800 193.6700 648,100
192.9300 193.3100 191.0200 193.1600 678,300
194.1400 196.4800 191.8500 192.2000 609,500
Weekend
Weekend
196.5900 197.3800 194.3000 194.9000 1,264,300
194.0300 196.8000 193.9100 196.2000 653,700
194.2600 196.3200 192.5700 193.9900 597,200
194.2600 194.6900 192.3500 192.8800 869,400
No trading
Weekend
Weekend
193.9900 196.9200 193.9600 195.2100 871,300
17 · 8-K After-hours · 16:48 ET 8-K ↗
192.7300 193.8300 188.8800 193.8200 474,000
191.8700 194.8500 190.4000 193.7500 948,700
189.2400 191.1800 187.0600 190.3900 794,600
187.6400 191.1600 187.2500 189.8400 926,100
Weekend
Weekend
189.1600 189.8800 186.4300 186.6100 1,081,500
190.9200 192.8000 187.1400 187.9400 768,100
188.8100 191.1100 187.5100 190.8500 693,100
191.2100 192.3000 189.4700 190.1800 754,900
187.3600 190.4500 187.1300 189.8100 620,700
Weekend
Weekend
16 · 8-K After-hours · 16:15 ET FORM 8-K ↗
191.7100 192.2000 186.2300 187.3900 762,500
188.1900 190.9900 187.9000 190.8400 739,900
190.8900 192.6200 188.4900 189.1300 898,600
191.3900 191.7000 189.1800 190.8400 613,800
190.6100 193.5000 190.4100 191.5000 567,500
Weekend
Weekend
15 · 8-K After-hours · 16:15 ET FORM 8-K ↗
194.5000 196.3400 192.2100 192.6700 692,000
190.2400 195.8700 189.9200 194.2000 1,110,000
193.8500 194.4900 187.5000 189.3200 1,399,900
14 · 424B2 After-hours · 17:22 ET 424B2 ↗
198.5900 198.7800 194.2700 195.0500 909,100
195.9100 198.0000 195.6100 196.6300 702,900
13 · 424B2 Pre-market · 08:47 ET 424B2 ↗
Weekend
Weekend
199.9900 200.0700 194.4600 196.2700 1,038,900
205.2800 205.6600 196.9600 199.5300 1,263,400
12 · 10-Q After-hours · 16:12 ET 10-Q ↗
205.3700 207.0000 198.7100 204.0000 1,609,400
203.2500 209.7900 202.1300 205.0400 2,426,100
11 · 8-K Pre-market · 06:48 ET 8-K ↗
194.2200 196.7700 191.6300 196.3100 1,964,300
Weekend
Weekend
190.2300 196.4500 190.2300 195.0200 1,000,100
191.2200 194.2700 191.1500 191.4600 987,200
193.1700 194.2800 191.0400 191.4200 877,700
192.2700 194.2600 191.1600 194.1600 885,500
191.0300 193.1300 189.7200 192.9100 899,000
Weekend
Weekend
197.6600 197.6600 190.1200 191.5100 1,044,200
197.9300 199.4100 196.5500 197.8200 718,400
196.1800 198.8900 194.0200 198.8100 799,300
199.4900 201.0000 195.7000 196.8100 908,800
10 · DEFA14A After-hours · 16:33 ET DEFA14A ↗ 9 · DEF 14A After-hours · 16:32 ET DEF 14A ↗
196.8700 199.2200 196.5700 198.9600 477,800
Weekend
Weekend
No trading
196.6600 199.1400 196.0600 198.0200 520,000
195.5100 198.8600 194.0900 197.6900 587,300
194.8600 198.9500 192.7300 195.9800 1,268,700
196.6700 197.5600 194.7200 197.1600 865,500
Weekend
Weekend
197.9300 198.6300 194.5700 195.5100 976,300
196.2400 198.8800 195.0000 198.1500 706,200
196.7700 197.7200 194.2800 196.4600 679,600
194.5800 197.0300 193.8100 196.0800 759,200
197.3300 202.9100 195.2300 195.6000 881,100
Weekend
Weekend
194.0700 196.8300 192.7900 195.2600 2,030,100
195.0100 197.2100 193.9100 194.1600 806,600
197.0700 201.4900 194.8800 195.2300 694,200
200.7000 200.7000 197.1800 198.6100 795,400
200.9800 201.8800 198.8600 198.9400 777,200
Weekend
Weekend
202.8400 205.0000 199.0900 199.7000 663,100
8 · 8-K After-hours · 16:30 ET CURRENT REPORT ↗
200.3400 203.0000 199.9700 200.8800 772,800
199.9900 201.7100 198.3700 200.5600 646,700
203.1500 204.3900 198.8700 200.9000 675,900
198.2500 202.4800 195.3900 201.5800 819,600
Weekend
Weekend
203.7600 203.7800 199.0100 199.2100 1,055,700
206.2100 206.2100 203.4700 203.9800 604,100
208.1400 209.7600 207.1100 208.4500 508,300
207.7300 209.8300 203.8900 208.3600 779,500
212.5200 213.2600 209.4300 210.2500 922,400
Weekend
Weekend
211.0900 213.5000 208.9700 211.9100 1,058,700
7 · 10-K After-hours · 16:38 ET 10-K ↗
208.6700 211.5600 208.0900 211.1000 783,700
209.5200 210.6900 206.1300 207.8000 798,300
207.8100 209.9000 206.3600 209.5400 882,100
201.9900 207.7200 201.9900 207.4300 783,100
Weekend
Weekend
204.3600 204.4200 200.9400 202.4100 642,000
204.8300 205.0900 202.0000 202.4400 815,300
205.2700 206.7500 203.1700 204.3900 871,700
207.9900 208.9300 202.8300 205.4900 971,200
No trading
Weekend
Weekend
207.4800 209.3900 204.5800 206.8700 1,354,600
211.8000 213.2000 206.8100 206.8600 1,671,500
207.0400 210.3800 201.9900 209.3200 1,431,200
194.7200 207.0500 191.9000 205.3500 2,307,900
6 · 8-K Pre-market · 06:53 ET 8-K ↗
190.0000 191.7800 187.5800 191.2500 1,925,500
Weekend
Weekend
193.2000 193.6000 189.9400 190.7100 1,099,500
190.0000 193.4600 188.6500 192.3000 1,635,500
185.3400 189.8000 185.1300 189.2300 1,337,500
184.7800 189.1300 184.6900 185.1700 807,900
186.0100 186.9300 182.3600 185.0000 1,003,800
Weekend
Weekend
183.8200 187.1900 183.8200 187.0300 1,164,100
182.1700 183.9700 181.6800 182.3500 635,700
183.0200 183.5800 181.6300 182.7400 838,900
181.5100 184.3900 181.4800 184.2400 667,900
182.1400 183.7900 181.3700 182.5300 681,900
Weekend
Weekend
181.9400 182.4400 179.7300 181.0200 848,900
185.1100 185.4700 182.0100 182.1600 1,754,200
189.0200 189.7500 184.4300 184.6500 1,140,300
187.6900 191.0700 186.8300 188.9500 1,482,000
No trading
Weekend
Weekend
189.4000 190.9600 188.7500 189.4900 1,132,500
187.1500 190.9900 186.4300 190.2600 1,245,600
180.5000 187.1000 179.8300 186.7700 1,498,900
176.8600 180.4200 175.4700 179.9600 1,069,600
5 · 8-K After-hours · 16:37 ET CURRENT REPORT ↗
175.8100 176.0600 173.5100 175.9400 695,200
Weekend
Weekend
177.5200 178.3000 174.4300 174.4400 942,400
178.1900 180.6600 176.7000 177.7400 870,100
181.1500 181.2300 177.7000 178.1400 767,300
173.3800 181.2200 173.3800 180.4600 1,165,400
173.4600 174.4900 171.1800 173.4900 748,800
Weekend
Weekend
173.3100 173.8100 172.0300 173.7900 683,200
No trading
175.4900 175.7300 173.3900 173.5300 645,300
175.3000 176.3700 175.0300 175.4900 732,800
175.7200 176.3500 174.6300 175.5200 632,000
Weekend
Weekend
176.4700 176.7300 175.6500 175.9400 402,700
No trading
175.7400 176.2600 175.1300 175.9200 296,500
176.5500 176.5500 174.4800 175.0800 652,500
176.0000 177.2400 175.6300 176.3400 704,300
Weekend
Weekend
175.8000 176.8300 174.5900 176.0600 1,580,900
179.1900 179.8000 176.0300 176.1500 973,800
178.3300 179.2300 177.0200 179.1000 1,652,300
184.8400 184.8400 178.5200 178.6600 1,338,900
183.2500 184.8100 182.9600 184.1100 951,900
Weekend
Weekend
182.1600 183.0100 181.2300 182.5600 1,139,000
179.6400 182.0600 179.5100 181.5700 685,600
180.0000 180.9900 178.9500 179.5100 1,071,100
181.7100 182.7700 178.6100 179.6200 846,500
182.2900 183.5000 181.2300 181.8200 980,700
Weekend
Weekend
183.2000 184.1900 182.0800 182.5100 738,200
182.3100 185.1200 182.2500 184.1800 1,044,900
183.2700 184.1600 182.2100 182.6100 1,057,300
183.8000 184.8900 182.2100 182.5500 1,177,500
188.5000 189.3900 183.6600 183.7700 1,175,700
Weekend
Weekend
190.1200 190.2600 188.9400 189.1800 379,700
No trading
191.4400 192.2600 189.2200 189.6900 869,600
191.7600 193.3500 190.7300 192.3500 1,207,300
192.7500 192.7500 189.7400 190.5800 2,285,300
Weekend
Weekend
188.1100 193.7600 187.8000 191.2500 1,769,800
187.1400 188.7700 186.2500 187.6100 1,104,400
185.3400 187.6800 184.1800 185.9600 874,600
187.3500 188.1600 184.3500 185.3200 1,368,400
187.0100 189.2600 185.0900 186.1900 1,086,500
Weekend
Weekend
186.8900 188.8900 186.1200 186.9500 923,900
185.6000 190.4700 184.5000 187.5800 1,412,000
188.3600 189.0700 186.8100 186.8500 1,076,600
184.9800 191.3100 184.8400 188.8500 1,293,700
178.2000 184.5900 175.7700 184.3100 1,592,600
Weekend
Weekend
177.1400 180.5900 176.0900 179.5000 1,020,700
177.9900 178.9800 175.6700 176.5100 830,200
177.8100 179.3900 176.8500 178.2600 784,900
179.3500 180.0400 176.2700 178.0300 1,059,500
175.7800 179.1500 174.3600 178.8400 1,106,900
Weekend
Weekend
174.3300 176.8100 174.3300 175.9500 966,200
175.2400 178.8800 174.9100 175.7500 1,427,000
178.3000 178.7600 174.7000 174.7800 1,014,800
179.8000 180.6300 177.1700 178.2800 1,434,000
181.3700 182.1600 179.7400 180.2600 900,900
Weekend
Weekend
183.9900 184.7300 181.9400 182.1800 867,100
181.9600 183.3800 179.5300 183.2300 1,230,900
184.8800 186.4600 180.8400 181.1700 1,583,200
195.0800 197.5500 179.8600 184.6400 2,889,900
4 · 8-K Pre-market · 06:50 ET 8-K ↗ 3 · 10-Q Pre-market · 06:31 ET 10-Q ↗
190.6900 191.8700 189.5000 190.4100 1,491,100
Weekend
Weekend
187.6100 190.0800 187.0500 189.5100 983,900
187.5000 188.7100 186.2800 186.8200 1,056,600
185.5600 188.1100 185.1900 187.3500 1,071,900
182.8200 185.7000 182.7700 185.3900 718,500
182.7100 184.2400 181.8200 182.7800 809,300
Weekend
Weekend
182.3000 184.3300 181.4200 184.0700 737,000
181.0500 182.7900 180.9800 181.4400 538,700
181.5200 181.6200 178.5400 180.8900 745,300
179.7700 184.4800 178.7600 181.8900 1,110,600
178.0000 179.6300 177.3900 178.4300 844,000
Weekend
Weekend
179.9400 180.6800 178.2500 179.3300 1,395,200
180.8300 182.0000 177.7900 180.9600 1,029,700
190.6800 190.9800 181.8100 182.0700 1,781,900
188.8800 191.4900 188.8800 190.5800 780,500
188.9900 189.4800 187.7600 188.8400 528,000
Weekend
Weekend
186.2900 189.2300 185.1700 188.9900 550,500
186.7100 187.2600 183.6200 185.3900 657,800
186.4900 187.9200 185.9800 186.8200 748,100
184.7200 187.9600 184.7200 186.9700 775,000
183.3200 185.5100 182.9000 184.6900 976,000
Weekend
Weekend
183.6900 185.0000 183.2600 183.6000 1,435,600
180.8400 184.1300 180.7100 183.3300 667,800
181.1500 183.4600 180.5200 182.2500 662,900
180.4800 181.5900 179.6600 180.1600 549,500
182.3700 183.2700 180.5800 180.6200 642,200
Weekend
Weekend
183.2400 185.0500 182.5100 182.9100 454,100
180.2800 184.1400 180.0000 183.4600 598,500
181.9200 182.1100 179.7700 180.1400 652,100
182.1700 183.3800 181.1700 182.6800 435,500
183.5000 183.5000 180.9100 182.5300 438,500
Weekend
Weekend
180.2000 183.7800 180.2000 183.4900 556,200
180.5400 180.8400 179.3800 180.1100 585,700
178.3400 179.6200 177.0400 179.5100 689,500
180.9000 182.0100 178.3100 178.7000 1,109,200
No trading
Weekend
Weekend
179.5600 182.3500 179.0600 181.6400 731,500
179.5100 179.7100 178.1300 179.2000 560,000
180.5400 180.8900 179.4500 179.7600 597,100
178.7700 180.3700 178.3900 180.3600 1,044,400
177.2200 179.1900 176.9700 178.6600 753,400
Weekend
Weekend
185.0000 185.6200 179.9300 180.2300 947,800
183.5100 185.2600 182.8400 183.7200 1,074,600
183.3400 184.9700 182.4400 184.4000 957,800
179.0800 183.3700 179.0500 182.8300 784,700
180.2300 180.4400 178.8400 178.9500 808,500
Weekend
Weekend
178.9400 180.3700 177.2700 179.7700 810,200
178.8400 178.8400 177.2900 178.4400 679,500
178.8700 179.4700 177.5900 179.0400 928,500
177.3600 178.8700 175.5600 178.6800 763,200
177.0900 178.5500 177.0400 178.3600 653,200
Weekend
Weekend
174.6500 177.2500 174.5800 176.9600 616,300
173.5900 174.4700 172.7000 174.2700 898,400
172.8600 175.4800 171.7900 173.0000 994,300
172.6000 174.5800 171.9100 173.2700 744,200
170.5300 172.7300 170.5300 172.4400 788,400
Weekend
Weekend
168.2400 171.9100 167.9600 170.8500 1,421,100
166.7600 170.1400 166.7600 167.4100 941,400
167.4000 169.7500 166.7500 168.7300 1,094,000
168.7200 169.6200 167.0300 167.9300 810,700
167.5900 168.7600 165.7800 167.8500 1,086,600
Weekend
Weekend
172.6000 173.0400 167.1600 168.5500 1,877,500
172.5300 175.7600 170.4700 171.9000 2,114,200
2 · 10-Q After-hours · 16:25 ET 10-Q ↗
179.6300 180.8900 168.3200 170.4800 3,086,500
170.6300 178.8600 170.0300 178.2400 2,697,900
1 · 8-K Pre-market · 06:48 ET 8-K ↗

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.