Vanguard Portfolio Management
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Vanguard Portfolio Management’s ACM Research ACMR Stock Holding History

Vanguard Portfolio Management’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
Q2 		$425M Buy
3,349,436
+1,145,605
+52% +$81M 0.02% 790
2026
Q1 		$86.7M Buy
+2,203,831
New +$117M ﹤0.01% 1491

Other funds holding ACMR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
VARA
Value Aligned Research Advisors Princeton, New Jersey $40.1B AUM 376.19% 1-Year Est. Return
WA
WFM Asia Road Town, Tortola, British Virgin Islands $663M AUM 15.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $55.2B AUM 57.07% 1-Year Est. Return

Vanguard Portfolio Management's ACMR Position: Q2 2026 in Review

Vanguard Portfolio Management increased its ACM Research (ACMR) stake by 52% in Q2 2026, buying an estimated $81M and bringing the position to 3,349,436 shares worth $425M. The position accounts for 0.02% of the portfolio, ranked #790.

Vanguard Portfolio Management first reported a position in ACMR in Q1 2026 and has held it in 2 quarters since. 372 funds tracked by Wall St. Rank hold ACMR as of Q2 2026.

  • Vanguard Portfolio Management held 3,349,436 shares of ACM Research worth $425M as of Q2 2026.
  • Vanguard Portfolio Management bought 1,145,605 ACM Research shares in Q2 2026, an estimated $81M.
  • ACM Research made up 0.02% of Vanguard Portfolio Management's portfolio in Q2 2026, its #790 holding.
  • Vanguard Portfolio Management first reported a position in ACM Research in Q1 2026 and has held it in 2 quarters since.
  • 372 funds tracked by Wall St. Rank held ACM Research as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.