OSI SYSTEMS INC

Ticker: OSIS CUSIP: 671044105 Class: EQTY

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 19,221 Value ($000) $4,903 Avg Close $261.19 Range $231.66 - $292.34

Q3 2025

Shares 17,965 Value ($000) $4,478 Avg Close $228.27 Range $204.00 - $249.79

Q2 2025

Shares 18,508 Value ($000) $4,162 Avg Close $213.44 Range $164.08 - $241.64

Q1 2025

Shares 18,339 Value ($000) $3,564 Avg Close $190.49 Range $150.84 - $220.00

Q4 2024

Shares 18,023 Value ($000) $3,018 Avg Close $158.52 Range $129.84 - $189.13

Q3 2024

Shares 19,289 Value ($000) $2,929 Avg Close $143.78 Range $129.18 - $158.69

Q2 2024

Shares 20,230 Value ($000) $2,782 Avg Close $137.83 Range $126.57 - $145.25

Q1 2024

Shares 46,831 Value ($000) $6,688 Avg Close $131.26 Range $120.42 - $144.03

Q4 2023

Shares 52,991 Value ($000) $6,838 Avg Close $119.08 Range $103.04 - $132.60

Q3 2023

Shares 51,970 Value ($000) $6,135 Avg Close $120.57 Range $112.19 - $139.90

Q2 2023

Shares 52,870 Value ($000) $6,230 Avg Close $114.74 Range $99.11 - $127.07

Q1 2023

Shares 58,024 Value ($000) $5,939 Avg Close $92.62 Range $78.35 - $102.89

Q4 2022

Shares 60,642 Value ($000) $4,822 Avg Close $81.40 Range $69.31 - $90.71

Q3 2022

Shares 54,308 Value ($000) $3,913 Avg Close $87.60 Range $72.02 - $103.17

Q2 2022

Shares 56,046 Value ($000) $4,789 Avg Close $82.06 Range $76.09 - $87.38

Q1 2022

Shares 56,565 Value ($000) $4,815 Avg Close $84.05 Range $76.35 - $95.63

Q4 2021

Shares 56,506 Value ($000) $5,266 Avg Close $93.81 Range $87.97 - $98.88

Q3 2021

Shares 56,489 Value ($000) $5,355 Avg Close $97.38 Range $91.08 - $101.64

Q2 2021

Shares 57,249 Value ($000) $5,819 Avg Close $97.33 Range $91.95 - $102.24

Q1 2021

Shares 55,812 Value ($000) $5,364 Avg Close $94.91 Range $89.10 - $100.67

Q4 2020

Shares 55,453 Value ($000) $5,169 Avg Close $85.48 Range $76.31 - $94.87

Q3 2020

Shares 55,463 Value ($000) $4,304 Avg Close $74.61 Range $66.11 - $81.69

Q2 2020

Shares 568,904 Value ($000) $42,463 Avg Close $73.05 Range $63.09 - $85.01

Q1 2020

Shares 653,555 Value ($000) $45,043 Avg Close $85.46 Range $49.96 - $102.61

Q4 2019

Shares 646,578 Value ($000) $65,136 Avg Close $98.82 Range $93.98 - $102.81

Q3 2019

Shares 319,036 Value ($000) $32,401 Avg Close $108.01 Range $93.05 - $117.21

Q2 2019

Shares 53,281 Value ($000) $6,001 Avg Close $100.77 Range $85.22 - $114.42

Q1 2019

Shares 55,281 Value ($000) $4,843 Avg Close $83.70 Range $70.22 - $91.19

Q4 2018

Shares 58,041 Value ($000) $4,254 Avg Close $72.14 Range $67.15 - $76.91

Q3 2018

Shares 25,761 Value ($000) $1,966 Avg Close $77.62 Range $73.70 - $82.94

Q2 2018

Shares 25,681 Value ($000) $1,986 Avg Close $69.82 Range $61.72 - $80.19

Q1 2018

Shares 27,547 Value ($000) $1,798 Avg Close $64.89 Range $50.50 - $73.28

Q4 2017

Shares 25,681 Value ($000) $1,653 Avg Close $84.03 Range $53.80 - $96.64

Q3 2017

Shares 25,681 Value ($000) $2,346 Avg Close $81.30 Range $74.96 - $92.34

Q2 2017

Shares 25,681 Value ($000) $1,930 Avg Close $75.70 Range $69.08 - $82.26

Q1 2017

Shares 26,181 Value ($000) $1,911 Avg Close $74.27 Range $69.45 - $81.55

Q4 2016

Shares 26,181 Value ($000) $1,993 Avg Close $72.10 Range $65.00 - $78.86

Q3 2016

Shares 30,881 Value ($000) $2,019 Avg Close $63.03 Range $55.76 - $69.49

Q2 2016

Shares 30,881 Value ($000) $1,795 Avg Close $55.08 Range $48.76 - $66.43

Q1 2016

Shares 31,975 Value ($000) $2,094 Avg Close $66.19 Range $48.19 - $88.33

Q4 2015

Shares 31,841 Value ($000) $2,823 Avg Close $87.50 Range $75.60 - $96.75

Q3 2015

Shares 32,641 Value ($000) $2,512 Avg Close $72.21 Range $66.94 - $79.28

Q2 2015

Shares 33,691 Value ($000) $2,385 Avg Close $72.33 Range $66.03 - $76.70

Q1 2015

Shares 31,191 Value ($000) $2,316 Avg Close $71.68 Range $66.90 - $75.00

Q4 2014

Shares 37,091 Value ($000) $2,625 Avg Close $68.20 Range $58.54 - $74.79

Q3 2014

Shares 37,591 Value ($000) $2,386 Avg Close $66.39 Range $62.10 - $70.27

Q2 2014

Shares 39,691 Value ($000) $2,649 Avg Close $59.67 Range $52.68 - $67.44

Q1 2014

Shares 42,794 Value ($000) $2,562 Avg Close $59.85 Range $51.85 - $66.78

Q4 2013

Shares 44,094 Value ($000) $2,342 Avg Close $68.42 Range $39.00 - $78.50

Q3 2013

Shares 44,094 Value ($000) $3,284 Avg Close $71.00 Range $63.20 - $76.25

Q2 2013

Shares 43,637 Value ($000) $2,811 Avg Close $58.30 Range $48.10 - $67.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	19,221	$4,903	$261.19	$231.66 - $292.34
Q3 2025	17,965	$4,478	$228.27	$204.00 - $249.79
Q2 2025	18,508	$4,162	$213.44	$164.08 - $241.64
Q1 2025	18,339	$3,564	$190.49	$150.84 - $220.00
Q4 2024	18,023	$3,018	$158.52	$129.84 - $189.13
Q3 2024	19,289	$2,929	$143.78	$129.18 - $158.69
Q2 2024	20,230	$2,782	$137.83	$126.57 - $145.25
Q1 2024	46,831	$6,688	$131.26	$120.42 - $144.03
Q4 2023	52,991	$6,838	$119.08	$103.04 - $132.60
Q3 2023	51,970	$6,135	$120.57	$112.19 - $139.90
Q2 2023	52,870	$6,230	$114.74	$99.11 - $127.07
Q1 2023	58,024	$5,939	$92.62	$78.35 - $102.89
Q4 2022	60,642	$4,822	$81.40	$69.31 - $90.71
Q3 2022	54,308	$3,913	$87.60	$72.02 - $103.17
Q2 2022	56,046	$4,789	$82.06	$76.09 - $87.38
Q1 2022	56,565	$4,815	$84.05	$76.35 - $95.63
Q4 2021	56,506	$5,266	$93.81	$87.97 - $98.88
Q3 2021	56,489	$5,355	$97.38	$91.08 - $101.64
Q2 2021	57,249	$5,819	$97.33	$91.95 - $102.24
Q1 2021	55,812	$5,364	$94.91	$89.10 - $100.67
Q4 2020	55,453	$5,169	$85.48	$76.31 - $94.87
Q3 2020	55,463	$4,304	$74.61	$66.11 - $81.69
Q2 2020	568,904	$42,463	$73.05	$63.09 - $85.01
Q1 2020	653,555	$45,043	$85.46	$49.96 - $102.61
Q4 2019	646,578	$65,136	$98.82	$93.98 - $102.81
Q3 2019	319,036	$32,401	$108.01	$93.05 - $117.21
Q2 2019	53,281	$6,001	$100.77	$85.22 - $114.42
Q1 2019	55,281	$4,843	$83.70	$70.22 - $91.19
Q4 2018	58,041	$4,254	$72.14	$67.15 - $76.91
Q3 2018	25,761	$1,966	$77.62	$73.70 - $82.94
Q2 2018	25,681	$1,986	$69.82	$61.72 - $80.19
Q1 2018	27,547	$1,798	$64.89	$50.50 - $73.28
Q4 2017	25,681	$1,653	$84.03	$53.80 - $96.64
Q3 2017	25,681	$2,346	$81.30	$74.96 - $92.34
Q2 2017	25,681	$1,930	$75.70	$69.08 - $82.26
Q1 2017	26,181	$1,911	$74.27	$69.45 - $81.55
Q4 2016	26,181	$1,993	$72.10	$65.00 - $78.86
Q3 2016	30,881	$2,019	$63.03	$55.76 - $69.49
Q2 2016	30,881	$1,795	$55.08	$48.76 - $66.43
Q1 2016	31,975	$2,094	$66.19	$48.19 - $88.33
Q4 2015	31,841	$2,823	$87.50	$75.60 - $96.75
Q3 2015	32,641	$2,512	$72.21	$66.94 - $79.28
Q2 2015	33,691	$2,385	$72.33	$66.03 - $76.70
Q1 2015	31,191	$2,316	$71.68	$66.90 - $75.00
Q4 2014	37,091	$2,625	$68.20	$58.54 - $74.79
Q3 2014	37,591	$2,386	$66.39	$62.10 - $70.27
Q2 2014	39,691	$2,649	$59.67	$52.68 - $67.44
Q1 2014	42,794	$2,562	$59.85	$51.85 - $66.78
Q4 2013	44,094	$2,342	$68.42	$39.00 - $78.50
Q3 2013	44,094	$3,284	$71.00	$63.20 - $76.25
Q2 2013	43,637	$2,811	$58.30	$48.10 - $67.50