Dimensional Fund Advisors
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Dimensional Fund Advisors’s OSI Systems OSIS Stock Holding History

Dimensional Fund Advisors’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 		$105M Sell
395,428
-11,464
-3% -$3.17M 0.02% 1036
2025
Q4 		$104M Sell
406,892
-12,577
-3% -$3.28M 0.02% 1045
2025
Q3 		$105M Sell
419,469
-29,941
-7% -$6.83M 0.02% 1034
2025
Q2 		$101M Sell
449,410
-141,364
-24% -$30.2M 0.02% 996
2025
Q1 		$115M Sell
590,774
-159,401
-21% -$30.4M 0.03% 859
2024
Q4 		$126M Sell
750,175
-21,185
-3% -$3.36M 0.03% 841
2024
Q3 		$117M Sell
771,360
-21,930
-3% -$3.15M 0.03% 906
2024
Q2 		$109M Sell
793,290
-11,502
-1% -$1.59M 0.03% 890
2024
Q1 		$115M Sell
804,792
-14,879
-2% -$1.95M 0.03% 837
2023
Q4 		$106M Buy
819,671
+18,298
+2% +$2.18M 0.03% 864
2023
Q3 		$94.6M Sell
801,373
-2,747
-0.3% -$331K 0.03% 844
2023
Q2 		$94.8M Buy
804,120
+1,001
+0.1% +$115K 0.03% 885
2023
Q1 		$82.2M Buy
803,119
+9,917
+1% +$919K 0.03% 965
2022
Q4 		$63.1K Sell
793,202
-163
-0% -$13.3K 0.02% 1126
2022
Q3 		$57.2M Sell
793,365
-5,941
-0.7% -$520K 0.02% 1111
2022
Q2 		$68.3M Sell
799,306
-9,763
-1% -$801K 0.02% 1023
2022
Q1 		$68.9M Buy
809,069
+5,950
+0.7% +$500K 0.02% 1137
2021
Q4 		$74.9M Buy
803,119
+417
+0.1% +$39.1K 0.02% 1105
2021
Q3 		$76.1M Buy
802,702
+736
+0.1% +$71.7K 0.02% 1058
2021
Q2 		$81.5M Sell
801,966
-33,078
-4% -$3.22M 0.03% 1025
2021
Q1 		$80.2M Sell
835,044
-41,460
-5% -$3.93M 0.03% 1020
2020
Q4 		$81.7M Sell
876,504
-41,891
-5% -$3.58M 0.03% 947
2020
Q3 		$71.3M Sell
918,395
-58,843
-6% -$4.39M 0.03% 862
2020
Q2 		$72.9M Sell
977,238
-6,117
-0.6% -$447K 0.03% 823
2020
Q1 		$67.8M Sell
983,355
-37,523
-4% -$3.21M 0.04% 722
2019
Q4 		$103M Sell
1,020,878
-40,460
-4% -$4M 0.04% 700
2019
Q3 		$108M Sell
1,061,338
-7,682
-0.7% -$830K 0.04% 613
2019
Q2 		$120M Buy
1,069,020
+2,730
+0.3% +$275K 0.05% 529
2019
Q1 		$93.4M Sell
1,066,290
-16,962
-2% -$1.42M 0.04% 725
2018
Q4 		$79.4M Buy
1,083,252
+5,210
+0.5% +$376K 0.04% 763
2018
Q3 		$82.3M Buy
1,078,042
+10,432
+1% +$810K 0.03% 891
2018
Q2 		$82.6M Sell
1,067,610
-3,005
-0.3% -$210K 0.03% 834
2018
Q1 		$69.9M Sell
1,070,615
-8,549
-0.8% -$555K 0.03% 955
2017
Q4 		$69.5M Buy
1,079,164
+8,094
+0.8% +$680K 0.03% 953
2017
Q3 		$97.9M Buy
1,071,070
+36
+0% +$2.93K 0.04% 596
2017
Q2 		$80.5M Buy
1,071,034
+1,642
+0.2% +$124K 0.04% 707
2017
Q1 		$78.1M Buy
1,069,392
+37,133
+4% +$2.76M 0.04% 705
2016
Q4 		$78.6M Buy
1,032,259
+52,077
+5% +$3.75M 0.04% 672
2016
Q3 		$64.1M Buy
980,182
+6,732
+0.7% +$424K 0.03% 775
2016
Q2 		$56.6M Buy
973,450
+3,067
+0.3% +$169K 0.03% 835
2016
Q1 		$63.6M Buy
970,383
+86,812
+10% +$5.75M 0.04% 682
2015
Q4 		$78.3M Buy
883,571
+39,265
+5% +$3.44M 0.05% 486
2015
Q3 		$65M Buy
844,306
+52,986
+7% +$3.83M 0.04% 578
2015
Q2 		$56M Buy
791,320
+37,383
+5% +$2.7M 0.03% 753
2015
Q1 		$56M Buy
753,937
+79,778
+12% +$5.72M 0.04% 729
2014
Q4 		$47.7M Buy
674,159
+68,573
+11% +$4.68M 0.03% 802
2014
Q3 		$38.4M Buy
605,586
+89,313
+17% +$5.93M 0.03% 924
2014
Q2 		$34.5M Buy
516,273
+43,052
+9% +$2.57M 0.02% 1053
2014
Q1 		$28.3M Buy
473,221
+11,165
+2% +$668K 0.02% 1188
2013
Q4 		$24.5M Buy
462,056
+11,841
+3% +$810K 0.02% 1318
2013
Q3 		$33.5M Buy
450,215
+7,034
+2% +$499K 0.03% 846
2013
Q2 		$28.6M Buy
+443,181
New +$25.8M 0.03% 895

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

Dimensional Fund Advisors's OSIS Position: Q1 2026 in Review

Dimensional Fund Advisors reduced its OSI Systems (OSIS) stake by 2.8% in Q1 2026, selling an estimated $3.17M and leaving 395,428 shares worth $105M. The position accounts for 0.02% of the portfolio, ranked #1036.

Dimensional Fund Advisors first reported a position in OSIS in Q2 2013 and has held it in 52 quarters since. The position peaked at $126M in Q4 2024. 368 funds tracked by Wall St. Rank hold OSIS as of Q1 2026.

  • Dimensional Fund Advisors held 395,428 shares of OSI Systems worth $105M as of Q1 2026.
  • Dimensional Fund Advisors sold 11,464 OSI Systems shares in Q1 2026, an estimated $3.17M.
  • OSI Systems made up 0.02% of Dimensional Fund Advisors's portfolio in Q1 2026, its #1036 holding.
  • Dimensional Fund Advisors first reported a position in OSI Systems in Q2 2013 and has held it in 52 quarters since.
  • Dimensional Fund Advisors's OSI Systems position peaked at $126M in Q4 2024.
  • 368 funds tracked by Wall St. Rank held OSI Systems as of Q1 2026.

Based on Dimensional Fund Advisors's 13F filing for Q1 2026, filed 7 May 2026.