Boston Partners
OSIS icon

Boston Partners’s OSI Systems OSIS Stock Holding History

Boston Partners’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 		$17.8M Sell
82,102
-4,427
-5% -$1.08M 0.02% 406
2026
Q1 		$23M Buy
86,529
+9,471
+12% +$2.62M 0.02% 357
2025
Q4 		$20M Sell
77,058
-21,037
-21% -$5.49M 0.02% 375
2025
Q3 		$24.5M Sell
98,095
-157
-0.2% -$35.8K 0.03% 353
2025
Q2 		$22M Buy
98,252
+1,825
+2% +$390K 0.02% 347
2025
Q1 		$18.6M Sell
96,427
-141,455
-59% -$26.9M 0.02% 330
2024
Q4 		$39.9M Buy
237,882
+61,304
+35% +$9.72M 0.05% 260
2024
Q3 		$26.5M Sell
176,578
-8,269
-4% -$1.19M 0.03% 298
2024
Q2 		$25.7M Sell
184,847
-8,707
-4% -$1.2M 0.03% 296
2024
Q1 		$27.3M Sell
193,554
-1,055
-0.5% -$138K 0.03% 293
2023
Q4 		$25.2M Sell
194,609
-6,181
-3% -$736K 0.03% 301
2023
Q3 		$23.1M Sell
200,790
-1,532
-0.8% -$185K 0.03% 297
2023
Q2 		$23.9M Sell
202,322
-6,231
-3% -$715K 0.03% 295
2023
Q1 		$22.1M Buy
208,553
+40,176
+24% +$3.72M 0.03% 303
2022
Q4 		$14M Buy
+168,377
New +$13.7M 0.02% 327
2014
Q1 		– Sell
-67,411
Closed -$3.58M – 738
2013
Q4 		$3.58M Buy
+67,411
New +$4.61M 0.01% 553

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

Boston Partners's OSIS Position: Q2 2026 in Review

Boston Partners reduced its OSI Systems (OSIS) stake by 5.1% in Q2 2026, selling an estimated $1.08M and leaving 82,102 shares worth $17.8M. The position accounts for 0.02% of the portfolio, ranked #406.

Boston Partners first reported a position in OSIS in Q4 2013 and has held it in 16 quarters since. The position peaked at $39.9M in Q4 2024. 362 funds tracked by Wall St. Rank hold OSIS as of Q2 2026.

  • Boston Partners held 82,102 shares of OSI Systems worth $17.8M as of Q2 2026.
  • Boston Partners sold 4,427 OSI Systems shares in Q2 2026, an estimated $1.08M.
  • OSI Systems made up 0.02% of Boston Partners's portfolio in Q2 2026, its #406 holding.
  • Boston Partners first reported a position in OSI Systems in Q4 2013 and has held it in 16 quarters since.
  • Boston Partners's OSI Systems position peaked at $39.9M in Q4 2024.
  • 362 funds tracked by Wall St. Rank held OSI Systems as of Q2 2026.

Based on Boston Partners's 13F filing for Q2 2026, filed 4 Aug 2026.