Optiver Holding
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Optiver Holding’s ACM Research ACMR Stock Holding History

Optiver Holding’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 		$54.7K Buy
431
+346
+407% +$24.5K ﹤0.01% 1137
2026
Q1 		$3.35K Buy
+85
New +$4.51K ﹤0.01% 1605
2025
Q4 		– Sell
-170
Closed -$6.65K – 2445
2025
Q3 		$6.65K Sell
170
-134
-44% -$3.98K ﹤0.01% 1536
2025
Q2 		$7.87K Sell
304
-43
-12% -$967 ﹤0.01% 1068
2025
Q1 		$8.1K Buy
+347
New +$7.92K ﹤0.01% 963

Other funds holding ACMR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
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

Optiver Holding's ACMR Position: Q2 2026 in Review

Optiver Holding increased its ACM Research (ACMR) stake by 407% in Q2 2026, buying an estimated $24.5K and bringing the position to 431 shares worth $54.7K. The position accounts for ﹤0.01% of the portfolio, ranked #1137.

Optiver Holding first reported a position in ACMR in Q1 2025 and has held it in 5 quarters since. 376 funds tracked by Wall St. Rank hold ACMR as of Q2 2026.

  • Optiver Holding held 431 shares of ACM Research worth $54.7K as of Q2 2026.
  • Optiver Holding bought 346 ACM Research shares in Q2 2026, an estimated $24.5K.
  • ACM Research made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #1137 holding.
  • Optiver Holding first reported a position in ACM Research in Q1 2025 and has held it in 5 quarters since.
  • 376 funds tracked by Wall St. Rank held ACM Research as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.