Grantham, Mayo, Van Otterloo & Co (GMO)
ACMR icon

Grantham, Mayo, Van Otterloo & Co (GMO)’s ACM Research ACMR Stock Holding History

Grantham, Mayo, Van Otterloo & Co (GMO)’s Portfolio ACMR Stock Details ACMR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$401K Sell
10,181
-10,106
-50% -$536K ﹤0.01% 566
2025
Q4 		$800K Buy
20,287
+1,686
+9% +$62.8K ﹤0.01% 538
2025
Q3 		$728K Buy
+18,601
New +$552K ﹤0.01% 503

Other funds holding ACMR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $43.8B AUM 42.28% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
VARA
Value Aligned Research Advisors Princeton, New Jersey $20.7B AUM 292.88% 1-Year Est. Return
PCP
Polunin Capital Partners London, United Kingdom $407M AUM 55.12% 1-Year Est. Return

Grantham, Mayo, Van Otterloo & Co (GMO)'s ACMR Position: Q1 2026 in Review

Grantham, Mayo, Van Otterloo & Co (GMO) reduced its ACM Research (ACMR) stake by 50% in Q1 2026, selling an estimated $536K and leaving 10,181 shares worth $401K. The position accounts for ﹤0.01% of the portfolio, ranked #566.

Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in ACMR in Q3 2025 and has held it in 3 quarters since. The position peaked at $800K in Q4 2025. 300 funds tracked by Wall St. Rank hold ACMR as of Q1 2026.

  • Grantham, Mayo, Van Otterloo & Co (GMO) held 10,181 shares of ACM Research worth $401K as of Q1 2026.
  • Grantham, Mayo, Van Otterloo & Co (GMO) sold 10,106 ACM Research shares in Q1 2026, an estimated $536K.
  • ACM Research made up ﹤0.01% of Grantham, Mayo, Van Otterloo & Co (GMO)'s portfolio in Q1 2026, its #566 holding.
  • Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in ACM Research in Q3 2025 and has held it in 3 quarters since.
  • Grantham, Mayo, Van Otterloo & Co (GMO)'s ACM Research position peaked at $800K in Q4 2025.
  • 300 funds tracked by Wall St. Rank held ACM Research as of Q1 2026.

Based on Grantham, Mayo, Van Otterloo & Co (GMO)'s 13F filing for Q1 2026, filed 14 May 2026.