Marshall Wace
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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
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 $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Mawer Investment Management
Mawer Investment Management Calgary, Alberta, Canada $15.4B AUM 10.9% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return

Marshall Wace's OSIS Position: Q1 2026 in Review

Marshall Wace opened a new position in OSI Systems (OSIS) in Q1 2026: 10,183 shares worth $2.7M. The stake represents ﹤0.01% of the portfolio and ranks #1617 among its holdings. This is a return to the name: Marshall Wace previously reported a position in OSIS as recently as Q3 2025.

Marshall Wace first reported a position in OSIS in Q2 2016 and has held it in 17 quarters since. The position peaked at $27.8M in Q4 2023. 368 funds tracked by Wall St. Rank hold OSIS as of Q1 2026.

  • Marshall Wace held 10,183 shares of OSI Systems worth $2.7M as of Q1 2026.
  • OSI Systems was a new Marshall Wace position in Q1 2026.
  • OSI Systems made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #1617 holding.
  • Marshall Wace first reported a position in OSI Systems in Q2 2016 and has held it in 17 quarters since.
  • Marshall Wace's OSI Systems position peaked at $27.8M in Q4 2023.
  • 368 funds tracked by Wall St. Rank held OSI Systems as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.