S.A. Mason’s Quest Diagnostics DGX Stock Holding History

S.A. Mason’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	$372K	Hold	1,900	–	–	0.14%	142
2025 Q4	$330K	Hold	1,900	–	–	0.13%	152
2025 Q3	$362K	Hold	1,900	–	–	0.16%	132
2025 Q2	$341K	Hold	1,900	–	–	0.17%	133
2025 Q1	$321K	Hold	1,900	–	–	0.17%	132
2024 Q4	$287K	Hold	1,900	–	–	0.15%	137
2024 Q3	$295K	Hold	1,900	–	–	0.16%	138
2024 Q2	$260K	Hold	1,900	–	–	0.15%	139
2024 Q1	$253K	Hold	1,900	–	–	0.15%	139
2023 Q4	$262K	Hold	1,900	–	–	0.18%	131
2023 Q3	$232K	Hold	1,900	–	–	0.17%	140
2023 Q2	$269K	Hold	1,900	–	–	0.2%	130
2023 Q1	$269K	Hold	1,900	–	–	0.2%	130
2022 Q4	$297K	Buy	1,900 +250	+15%	+$35.9K	0.22%	117
2022 Q3	$202K	Hold	1,650	–	–	0.16%	142
2022 Q2	$219K	Hold	1,650	–	–	0.16%	144
2022 Q1	$226K	Hold	1,650	–	–	0.14%	151
2021 Q4	$285K	Hold	1,650	–	–	0.17%	134
2021 Q3	$240K	Hold	1,650	–	–	0.16%	147
2021 Q2	$218K	Hold	1,650	–	–	0.15%	152
2021 Q1	$212K	Hold	1,650	–	–	0.16%	150
2020 Q4	$197K	Hold	1,650	–	–	0.16%	143
2020 Q3	$189K	Hold	1,650	–	–	0.18%	133
2020 Q2	$188K	Hold	1,650	–	–	0.2%	126
2020 Q1	$132K	Hold	1,650	–	–	0.16%	134
2019 Q4	$176K	Buy	+1,650	New	+$172K	0.17%	133

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

S.A. Mason's DGX Position: Q1 2026 in Review

S.A. Mason held its Quest Diagnostics (DGX) position steady in Q1 2026 at 1,900 shares worth $372K. The position accounts for 0.14% of the portfolio, ranked #142.

S.A. Mason first reported a position in DGX in Q4 2019 and has held it in 26 quarters since. 1,063 funds tracked by Wall St. Rank hold DGX as of Q1 2026.

S.A. Mason held 1,900 shares of Quest Diagnostics worth $372K as of Q1 2026.
S.A. Mason left its Quest Diagnostics share count unchanged in Q1 2026.
Quest Diagnostics made up 0.14% of S.A. Mason's portfolio in Q1 2026, its #142 holding.
S.A. Mason first reported a position in Quest Diagnostics in Q4 2019 and has held it in 26 quarters since.
1,063 funds tracked by Wall St. Rank held Quest Diagnostics as of Q1 2026.

Based on S.A. Mason's 13F filing for Q1 2026, filed 27 Apr 2026.