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PDT Partners’s OSI Systems OSIS Stock Holding History

PDT 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 		$7.63M Sell
34,904
-7,200
-17% -$1.76M 0.4% 79
2026
Q1 		$11.2M Hold
42,104
– – 0.66% 29
2025
Q4 		$10.7M Hold
42,104
– – 0.7% 19
2025
Q3 		$10.5M Hold
42,104
– – 0.66% 20
2025
Q2 		$9.47M Buy
42,104
+15,108
+56% +$3.22M 0.54% 26
2025
Q1 		$5.25M Buy
26,996
+22,795
+543% +$4.34M 0.37% 64
2024
Q4 		$703K Buy
+4,201
New +$666K 0.06% 410
2020
Q2 		– Sell
-24,120
Closed -$1.66M – 772
2020
Q1 		$1.66M Sell
24,120
-980
-4% -$83.8K 0.13% 173
2019
Q4 		$2.53M Sell
25,100
-25
-0.1% -$2.47K 0.16% 172
2019
Q3 		$2.55M Buy
25,125
+9,025
+56% +$975K 0.15% 171
2019
Q2 		$1.81M Sell
16,100
-3,800
-19% -$383K 0.11% 197
2019
Q1 		$1.74M Buy
+19,900
New +$1.67M 0.1% 212
2018
Q2 		– Sell
-28,074
Closed -$1.83M – 560
2018
Q1 		$1.83M Sell
28,074
-38,226
-58% -$2.48M 0.06% 284
2017
Q4 		$4.27M Buy
66,300
+54,035
+441% +$4.54M 0.12% 206
2017
Q3 		$1.12M Buy
+12,265
New +$997K 0.04% 343
2015
Q2 		– Sell
-9,842
Closed -$731K – 1557
2015
Q1 		$731K Buy
9,842
+3,437
+54% +$246K 0.02% 888
2014
Q4 		$453K Buy
6,405
+2,176
+51% +$148K 0.04% 466
2014
Q3 		$268K Sell
4,229
-6,400
-60% -$425K 0.01% 1124
2014
Q2 		$709K Sell
10,629
-6,002
-36% -$358K 0.02% 824
2014
Q1 		$996K Buy
+16,631
New +$995K 0.02% 677

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

PDT Partners's OSIS Position: Q2 2026 in Review

PDT Partners reduced its OSI Systems (OSIS) stake by 17% in Q2 2026, selling an estimated $1.76M and leaving 34,904 shares worth $7.63M. The position accounts for 0.4% of the portfolio, ranked #79.

PDT Partners first reported a position in OSIS in Q1 2014 and has held it in 20 quarters since. The position peaked at $11.2M in Q1 2026. 365 funds tracked by Wall St. Rank hold OSIS as of Q2 2026.

  • PDT Partners held 34,904 shares of OSI Systems worth $7.63M as of Q2 2026.
  • PDT Partners sold 7,200 OSI Systems shares in Q2 2026, an estimated $1.76M.
  • OSI Systems made up 0.4% of PDT Partners's portfolio in Q2 2026, its #79 holding.
  • PDT Partners first reported a position in OSI Systems in Q1 2014 and has held it in 20 quarters since.
  • PDT Partners's OSI Systems position peaked at $11.2M in Q1 2026.
  • 365 funds tracked by Wall St. Rank held OSI Systems as of Q2 2026.

Based on PDT Partners's 13F filing for Q2 2026, filed 14 Aug 2026.