Primecap Management
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Primecap Management’s OSI Systems OSIS Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$72.3M Sell
321,420
-12,910
-4% -$2.9M 0.06% 170
2025
Q1
$65M Buy
334,330
+36,620
+12% +$7.12M 0.05% 163
2024
Q4
$49.8M Buy
297,710
+3,210
+1% +$537K 0.04% 189
2024
Q3
$44.7M Buy
294,500
+13,880
+5% +$2.11M 0.03% 197
2024
Q2
$38.6M Sell
280,620
-12,480
-4% -$1.72M 0.03% 200
2024
Q1
$41.9M Buy
293,100
+7,900
+3% +$1.13M 0.03% 197
2023
Q4
$36.8M Buy
285,200
+6,210
+2% +$801K 0.03% 201
2023
Q3
$32.9M Sell
278,990
-11,360
-4% -$1.34M 0.03% 200
2023
Q2
$34.2M Sell
290,350
-3,990
-1% -$470K 0.03% 201
2023
Q1
$30.1M Buy
294,340
+1,030
+0.4% +$105K 0.03% 204
2022
Q4
$23.3M Sell
293,310
-10,790
-4% -$858K 0.02% 211
2022
Q3
$21.9M Sell
304,100
-8,700
-3% -$627K 0.02% 210
2022
Q2
$26.7M Sell
312,800
-11,160
-3% -$954K 0.02% 200
2022
Q1
$27.6M Sell
323,960
-12,670
-4% -$1.08M 0.02% 217
2021
Q4
$31.4M Sell
336,630
-33,270
-9% -$3.1M 0.02% 214
2021
Q3
$35.1M Sell
369,900
-10,050
-3% -$953K 0.02% 209
2021
Q2
$38.6M Sell
379,950
-2,900
-0.8% -$295K 0.03% 208
2021
Q1
$36.8M Buy
382,850
+33,450
+10% +$3.21M 0.03% 206
2020
Q4
$32.6M Sell
349,400
-4,900
-1% -$457K 0.02% 207
2020
Q3
$27.5M Buy
354,300
+84,200
+31% +$6.53M 0.02% 202
2020
Q2
$20.2M Buy
270,100
+28,400
+12% +$2.12M 0.02% 204
2020
Q1
$16.7M Buy
241,700
+5,600
+2% +$386K 0.02% 199
2019
Q4
$23.8M Hold
236,100
0.02% 203
2019
Q3
$24M Buy
236,100
+500
+0.2% +$50.8K 0.02% 196
2019
Q2
$26.5M Sell
235,600
-23,100
-9% -$2.6M 0.02% 206
2019
Q1
$22.7M Sell
258,700
-15,000
-5% -$1.31M 0.02% 210
2018
Q4
$20.1M Sell
273,700
-2,000
-0.7% -$147K 0.02% 208
2018
Q3
$21M Sell
275,700
-26,200
-9% -$2M 0.01% 220
2018
Q2
$23.3M Sell
301,900
-7,381
-2% -$571K 0.02% 209
2018
Q1
$20.2M Sell
309,281
-82,219
-21% -$5.37M 0.02% 212
2017
Q4
$25.2M Sell
391,500
-32,800
-8% -$2.11M 0.02% 195
2017
Q3
$38.8M Sell
424,300
-4,500
-1% -$411K 0.03% 183
2017
Q2
$32.2M Buy
428,800
+26,000
+6% +$1.95M 0.03% 193
2017
Q1
$29.4M Buy
402,800
+40,500
+11% +$2.96M 0.03% 193
2016
Q4
$27.6M Buy
362,300
+35,300
+11% +$2.69M 0.03% 187
2016
Q3
$21.4M Buy
327,000
+10,000
+3% +$654K 0.02% 199
2016
Q2
$18.4M Buy
317,000
+301,000
+1,881% +$17.5M 0.02% 207
2016
Q1
$1.05M Buy
+16,000
New +$1.05M ﹤0.01% 264