Marshall Wace
MCY icon

Marshall Wace’s Mercury Insurance MCY Stock Holding History

Marshall Wace’s Portfolio MCY Stock Details MCY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.85M Sell
45,526
-91,121
-67% -$8.97M ﹤0.01% 1395
2026
Q1 		$12M Buy
+136,647
New +$12.2M 0.01% 891
2025
Q2 		– Sell
-92,283
Closed -$5.16M – 2974
2025
Q1 		$5.16M Buy
92,283
+39,668
+75% +$2.14M 0.01% 1052
2024
Q4 		$3.5M Buy
52,615
+45,736
+665% +$3.22M ﹤0.01% 1217
2024
Q3 		$433K Sell
6,879
-28,217
-80% -$1.68M ﹤0.01% 1970
2024
Q2 		$1.87M Sell
35,096
-32,041
-48% -$1.74M ﹤0.01% 1412
2024
Q1 		$3.46M Buy
+67,137
New +$2.96M 0.01% 1145
2023
Q3 		– Sell
-41,396
Closed -$1.25M – 2490
2023
Q2 		$1.25M Sell
41,396
-27,919
-40% -$852K ﹤0.01% 1625
2023
Q1 		$2.2M Buy
+69,315
New +$2.36M ﹤0.01% 1405
2022
Q3 		– Sell
-29,610
Closed -$1.31M – 3614
2022
Q2 		$1.31M Buy
+29,610
New +$1.46M ﹤0.01% 2279
2020
Q2 		– Sell
-77,842
Closed -$3.17M – 1799
2020
Q1 		$3.17M Buy
77,842
+65,405
+526% +$2.98M 0.03% 493
2019
Q4 		$606K Sell
12,437
-9,712
-44% -$488K ﹤0.01% 1108
2019
Q3 		$1.24M Buy
+22,149
New +$1.27M 0.01% 889
2019
Q2 		– Sell
-11,300
Closed -$566K – 1633
2019
Q1 		$566K Sell
11,300
-223,779
-95% -$11.6M 0.01% 1107
2018
Q4 		$12.2M Sell
235,079
-1,458
-0.6% -$79.3K 0.12% 196
2018
Q3 		$11.9M Buy
+236,537
New +$11.8M 0.1% 271
2016
Q2 		– Sell
-21,019
Closed -$1.17M – 1085
2016
Q1 		$1.17M Buy
21,019
+621
+3% +$30.9K 0.01% 678
2015
Q4 		$950K Buy
+20,398
New +$1.03M 0.01% 718

Other funds holding MCY

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
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
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Marshall Wace's MCY Position: Q2 2026 in Review

Marshall Wace reduced its Mercury Insurance (MCY) stake by 67% in Q2 2026, selling an estimated $8.97M and leaving 45,526 shares worth $4.85M. The position accounts for ﹤0.01% of the portfolio, ranked #1395.

Marshall Wace first reported a position in MCY in Q4 2015 and has held it in 18 quarters since. The position peaked at $12.2M in Q4 2018. 348 funds tracked by Wall St. Rank hold MCY as of Q2 2026.

  • Marshall Wace held 45,526 shares of Mercury Insurance worth $4.85M as of Q2 2026.
  • Marshall Wace sold 91,121 Mercury Insurance shares in Q2 2026, an estimated $8.97M.
  • Mercury Insurance made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1395 holding.
  • Marshall Wace first reported a position in Mercury Insurance in Q4 2015 and has held it in 18 quarters since.
  • Marshall Wace's Mercury Insurance position peaked at $12.2M in Q4 2018.
  • 348 funds tracked by Wall St. Rank held Mercury Insurance as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.