O'Shaughnessy Asset Management’s Pro-Dex PDEX Stock Holding History

O'Shaughnessy Asset Management’s Portfolio PDEX Stock Details PDEX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$311K	Sell	6,326 -3,017	-32%	-$130K	﹤0.01%	1763
2025 Q4	$360K	Sell	9,343 -13,941	-60%	-$482K	﹤0.01%	1669
2025 Q3	$788K	Sell	23,284 -9,155	-28%	-$394K	﹤0.01%	1235
2025 Q2	$1.42M	Buy	32,439 +4,493	+16%	+$220K	0.01%	916
2025 Q1	$1.39M	Buy	27,946 +6,669	+31%	+$278K	0.01%	851
2024 Q4	$995K	Buy	+21,277	New	+$867K	0.01%	965
2021 Q4	–	Sell	-3,339	Closed	-$86K	–	2120
2021 Q3	$86K	Sell	3,339 -2,522	-43%	-$71.7K	﹤0.01%	1433
2021 Q2	$179K	Sell	5,861 -207	-3%	-$6.34K	﹤0.01%	1080
2021 Q1	$164K	Sell	6,068 -6,888	-53%	-$188K	﹤0.01%	1008
2020 Q4	$401K	Buy	12,956 +9,007	+228%	+$319K	0.01%	584
2020 Q3	$113K	Buy	3,949 +3,496	+772%	+$81.1K	﹤0.01%	869
2020 Q2	$8K	Sell	453 -4,997	-92%	-$88.7K	﹤0.01%	1302
2020 Q1	$88K	Sell	5,450 -12,303	-69%	-$215K	﹤0.01%	651
2019 Q4	$312K	Sell	17,753 -4,413	-20%	-$62.9K	0.01%	500
2019 Q3	$339K	Sell	22,166 -2,912	-12%	-$41.3K	0.01%	436
2019 Q2	$326K	Buy	25,078 +8,373	+50%	+$117K	0.01%	452
2019 Q1	$242K	Buy	+16,705	New	+$235K	0.01%	509

Other funds holding PDEX

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

PAIM

Punch & Associates Investment Management Edina, Minnesota $1.73B AUM 27.65% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

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

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

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

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

Quadrature Capital London, United Kingdom $8.4B AUM 63.34% 1-Year Est. Return

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

O'Shaughnessy Asset Management's PDEX Position: Q1 2026 in Review

O'Shaughnessy Asset Management reduced its Pro-Dex (PDEX) stake by 32% in Q1 2026, selling an estimated $130K and leaving 6,326 shares worth $311K. The position accounts for ﹤0.01% of the portfolio, ranked #1763.

O'Shaughnessy Asset Management first reported a position in PDEX in Q1 2019 and has held it in 17 quarters since. The position peaked at $1.42M in Q2 2025. 58 funds tracked by Wall St. Rank hold PDEX as of Q1 2026.

O'Shaughnessy Asset Management held 6,326 shares of Pro-Dex worth $311K as of Q1 2026.
O'Shaughnessy Asset Management sold 3,017 Pro-Dex shares in Q1 2026, an estimated $130K.
Pro-Dex made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q1 2026, its #1763 holding.
O'Shaughnessy Asset Management first reported a position in Pro-Dex in Q1 2019 and has held it in 17 quarters since.
O'Shaughnessy Asset Management's Pro-Dex position peaked at $1.42M in Q2 2025.
58 funds tracked by Wall St. Rank held Pro-Dex as of Q1 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q1 2026, filed 13 May 2026.