Harbor Capital Advisors’s Quest Diagnostics DGX Stock Holding History

Harbor Capital Advisors’s Portfolio DGX Stock Details DGX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$843K	Buy	4,303 +1,163	+37%	+$226K	0.07%	358
2025 Q4	$545K	Buy	3,140 +12	+0.4%	+$2.19K	0.04%	458
2025 Q3	$596K	Sell	3,128 -7,661	-71%	-$1.36M	0.05%	430
2025 Q2	$1.94M	Buy	10,789 +69	+0.6%	+$12K	0.08%	305
2025 Q1	$1.81M	Buy	10,720 +586	+6%	+$96.3K	0.08%	305
2024 Q4	$1.53M	Sell	10,134 -35	-0.3%	-$5.44K	0.07%	362
2024 Q3	$1.58M	Buy	10,169 +5,436	+115%	+$812K	0.07%	373
2024 Q2	$648K	Buy	4,733 +3,527	+292%	+$483K	0.05%	467
2024 Q1	$161K	Buy	+1,206	New	+$156K	0.02%	658
2023 Q3	–	Sell	-139	Closed	-$19.5K	–	499
2023 Q2	$19.5K	Buy	+139	New	+$19.2K	﹤0.01%	604

Other funds holding DGX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

EIG

EdgePoint Investment Group Toronto, Ontario, Canada $12.5B AUM 31.7% 1-Year Est. Return

Harbor Capital Advisors's DGX Position: Q1 2026 in Review

Harbor Capital Advisors increased its Quest Diagnostics (DGX) stake by 37% in Q1 2026, buying an estimated $226K and bringing the position to 4,303 shares worth $843K. The position accounts for 0.07% of the portfolio, ranked #358.

Harbor Capital Advisors first reported a position in DGX in Q2 2023 and has held it in 10 quarters since. The position peaked at $1.94M in Q2 2025. 1,063 funds tracked by Wall St. Rank hold DGX as of Q1 2026.

Harbor Capital Advisors held 4,303 shares of Quest Diagnostics worth $843K as of Q1 2026.
Harbor Capital Advisors bought 1,163 Quest Diagnostics shares in Q1 2026, an estimated $226K.
Quest Diagnostics made up 0.07% of Harbor Capital Advisors's portfolio in Q1 2026, its #358 holding.
Harbor Capital Advisors first reported a position in Quest Diagnostics in Q2 2023 and has held it in 10 quarters since.
Harbor Capital Advisors's Quest Diagnostics position peaked at $1.94M in Q2 2025.
1,063 funds tracked by Wall St. Rank held Quest Diagnostics as of Q1 2026.

Based on Harbor Capital Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.