Marshall Wace
OSIS icon

Marshall Wace’s OSI Systems OSIS Stock Holding History

Marshall Wace’s Portfolio OSIS Stock Details OSIS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$612K Sell
2,800
-7,383
-73% -$1.81M ﹤0.01% 2428
2026
Q1 		$2.7M Buy
+10,183
New +$2.82M ﹤0.01% 1617
2025
Q4 		– Sell
-27,083
Closed -$6.75M – 3344
2025
Q3 		$6.75M Buy
27,083
+6,083
+29% +$1.39M 0.01% 1077
2025
Q2 		$4.72M Sell
21,000
-23,864
-53% -$5.09M 0.01% 1160
2025
Q1 		$8.72M Buy
44,864
+15,285
+52% +$2.91M 0.01% 822
2024
Q4 		$4.95M Buy
29,579
+1,421
+5% +$225K 0.01% 1064
2024
Q3 		$4.28M Sell
28,158
-22,542
-44% -$3.24M 0.01% 1054
2024
Q2 		$6.97M Sell
50,700
-126,776
-71% -$17.5M 0.01% 872
2024
Q1 		$25.3M Sell
177,476
-37,580
-17% -$4.93M 0.04% 434
2023
Q4 		$27.8M Buy
215,056
+193,624
+903% +$23.1M 0.05% 375
2023
Q3 		$2.53M Buy
21,432
+3,991
+23% +$481K 0.01% 1118
2023
Q2 		$2.06M Buy
+17,441
New +$2M ﹤0.01% 1395
2021
Q1 		– Sell
-10,101
Closed -$942K – 2758
2020
Q4 		$942K Sell
10,101
-125,055
-93% -$10.7M 0.01% 1236
2020
Q3 		$10.5M Buy
135,156
+75,524
+127% +$5.64M 0.07% 288
2020
Q2 		$4.45M Buy
+59,632
New +$4.36M 0.03% 510
2019
Q4 		– Sell
-111,022
Closed -$11.3M – 1970
2019
Q3 		$11.3M Buy
+111,022
New +$12M 0.09% 265
2018
Q4 		– Sell
-49,079
Closed -$3.75M – 1747
2018
Q3 		$3.75M Buy
+49,079
New +$3.81M 0.03% 530
2016
Q3 		– Sell
-6,839
Closed -$398K – 1077
2016
Q2 		$398K Buy
+6,839
New +$377K ﹤0.01% 864

Other funds holding OSIS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
JT
Jupiter Topco New York $245B AUM
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
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
CCM
Channing Capital Management Chicago, Illinois $4.34B AUM 37.08% 1-Year Est. Return

Marshall Wace's OSIS Position: Q2 2026 in Review

Marshall Wace reduced its OSI Systems (OSIS) stake by 73% in Q2 2026, selling an estimated $1.81M and leaving 2,800 shares worth $612K. The position accounts for ﹤0.01% of the portfolio, ranked #2428.

Marshall Wace first reported a position in OSIS in Q2 2016 and has held it in 18 quarters since. The position peaked at $27.8M in Q4 2023. 363 funds tracked by Wall St. Rank hold OSIS as of Q2 2026.

  • Marshall Wace held 2,800 shares of OSI Systems worth $612K as of Q2 2026.
  • Marshall Wace sold 7,383 OSI Systems shares in Q2 2026, an estimated $1.81M.
  • OSI Systems made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #2428 holding.
  • Marshall Wace first reported a position in OSI Systems in Q2 2016 and has held it in 18 quarters since.
  • Marshall Wace's OSI Systems position peaked at $27.8M in Q4 2023.
  • 363 funds tracked by Wall St. Rank held OSI Systems as of Q2 2026.

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