OP Asset Management’s Affiliated Managers Group AMG Stock Holding History

OP Asset Management’s Portfolio AMG Stock Details AMG Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.75M	Sell	5,170 -9,610	-65%	-$2.98M	0.02%	504
2026 Q1	$4.09M	Sell	14,780 -2,852	-16%	-$859K	0.04%	286
2025 Q4	$5.08M	Sell	17,632 -5,776	-25%	-$1.49M	0.06%	230
2025 Q3	$5.58M	Buy	23,408 +22,583	+2,737%	+$4.98M	0.07%	208
2025 Q2	$162K	Sell	825 -1,521	-65%	-$264K	﹤0.01%	743
2025 Q1	$394K	Buy	+2,346	New	+$409K	0.01%	696

Other funds holding AMG

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

OP Asset Management's AMG Position: Q2 2026 in Review

OP Asset Management reduced its Affiliated Managers Group (AMG) stake by 65% in Q2 2026, selling an estimated $2.98M and leaving 5,170 shares worth $1.75M. The position accounts for 0.02% of the portfolio, ranked #504.

OP Asset Management first reported a position in AMG in Q1 2025 and has held it in 6 quarters since. The position peaked at $5.58M in Q3 2025. 566 funds tracked by Wall St. Rank hold AMG as of Q2 2026.

OP Asset Management held 5,170 shares of Affiliated Managers Group worth $1.75M as of Q2 2026.
OP Asset Management sold 9,610 Affiliated Managers Group shares in Q2 2026, an estimated $2.98M.
Affiliated Managers Group made up 0.02% of OP Asset Management's portfolio in Q2 2026, its #504 holding.
OP Asset Management first reported a position in Affiliated Managers Group in Q1 2025 and has held it in 6 quarters since.
OP Asset Management's Affiliated Managers Group position peaked at $5.58M in Q3 2025.
566 funds tracked by Wall St. Rank held Affiliated Managers Group as of Q2 2026.

Based on OP Asset Management's 13F filing for Q2 2026, filed 28 Jul 2026.