Ticker · CUSIP 671044105

OSIS

OSI SYSTEMS INC

Technology·Electronic Components

···Share

Holders (tracked)

Combined shares

422,192

Combined value

$107.69M

Last close

$309.68

Quarter

2025Q4

Price is +21.4% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$309.68+115.49 (+59.47%)H $309.68 · L $188.04 · Avg Vol 226K

Tracked holders · last 8 quarters

-2 vs previous quarter over the last 8.

SEC event timeline

20 events

D.E. Shaw & Co. trimmed2026-02-17
−4,520 shares · 2025Q4
Position
Two Sigma Investments exited2026-02-17
−59,065 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−52,417 shares · 2025Q4
Position
Steve Cohen (Point72) exited2026-02-17
−21,619 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−7,923 shares · 2025Q4
Position
Wellington Management opened position2026-02-17
+49,861 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−9,178 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+10,144 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+11,111 shares · 2025Q4
Position
First Eagle Investment Management trimmed2026-02-04
−4,300 shares · 2025Q4
Position
AQR Capital Management added2025-11-14
+11,762 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−128,361 shares · 2025Q3
Position
Steve Cohen (Point72) trimmed2025-11-14
−10,427 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+30,617 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−500 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+190,806 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−13,450 shares · 2025Q3
Position
First Eagle Investment Management added2025-11-12
+7,664 shares · 2025Q3
Position
Mario Gabelli (GAMCO) exited2025-11-12
−3,564 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−21,783 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for OSIS →

Follow-the-investor returns

If you'd copied each holder of OSIS…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Norges Bank (Norway SWF)	2016Q1	$72.61	+326.5%	$3.4M
First Eagle Investment Management	2024Q4	$187.74	+64.9%	$8.2M
AQR Capital Management	2016Q1	$207.56	+49.2%	$6.0M
Izzy Englander (Millennium Mgmt)	2016Q2	$222.38	+39.3%	$13.5M
Wellington Management	2019Q2	$225.28	+37.5%	$15.4M
T. Rowe Price	2016Q1	$238.59	+29.8%	$79.0M
D.E. Shaw & Co.	2016Q1	$247.10	+25.3%	$2.3M
Ken Griffin (Citadel Advisors)	2016Q2	$251.99	+22.9%	$1.6M
Ken Griffin (Citadel Advisors)	2016Q2	$251.99	+22.9%	$1.6M
Ken Griffin (Citadel Advisors)	2016Q2	$251.99	+22.9%	$1.6M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Wellington Management
+49,861
$12.7M
Norges Bank (Norway SWF)
+11,111
$2.8M

Added to1

T. Rowe Price
+10,144
$3K

Trimmed5

Izzy Englander (Millennium Mgmt)
−52,417
$13.4M
AQR Capital Management
−9,178
$2.3M
Ken Griffin (Citadel Advisors)
−7,923
$2.0M
D.E. Shaw & Co.
−4,520
$1.2M
First Eagle Investment Management
−4,300
$1.1M

Exited2

Two Sigma Investments
−59,065
$14.7M
Steve Cohen (Point72)
−21,619
$5.4M

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	10	3,795,173	$16.94B	—
2022Q2	11	3,654,844	$15.39B	+1
2022Q3	11	3,788,638	$273.0M	—
2022Q4	11	3,714,624	$295.4M	—
2023Q1	10	3,321,682	$340.0M	-1
2023Q2	11	3,069,466	$361.7M	+1
2023Q3	12	3,022,477	$356.8M	+1
2023Q4	8	2,877,763	$371.4M	-4
2024Q1	10	2,880,862	$411.4M	+2
2024Q2	12	2,839,375	$390.5M	+2
2024Q3	11	261,508	$39.7M	-1
2024Q4	12	262,874	$44.0M	+1
2025Q1	11	128,891	$25.0M	-1
2025Q2	16	501,184	$112.7M	+5
2025Q3	12	520,398	$129.7M	-4
2025Q4	10	422,192	$107.7M	-2

Who owns OSIS

10 super-investors · 2025Q4

Tracked stake

422.2K

Combined value

$108M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added1Trim7

#	Manager	Shares	Value	% of book	Last action
1	T. Rowe Price	255.1K	$65M	0.0%	Added+10.1K
2	Wellington Management	49.9K	$13M	0.0%	New+49.9K
3	Izzy Englander Millennium Mgmt	43.7K	$11M	0.0%	Trim−52.4K
4	First Eagle Investment Management	26.6K	$7M	0.0%	Trim−4.3K
5	AQR Capital Management	19.4K	$5M	0.0%	Trim−9.2K
6	Norges Bank Norway SWF	11.1K	$3M	0.0%	New+11.1K
7	D.E. Shaw & Co.	7.5K	$2M	0.0%	Trim−4.5K
8	Ken Griffin Citadel Advisors	5.1K	$1M	0.0%	Trim−7.9K
9	Ken Griffin Citadel Advisors	2.6K	$663K	0.0%	Trim−7.9K
10	Ken Griffin Citadel Advisors	1.2K	$314K	0.0%	Trim−7.9K

Recent moves

20 transactions

TRIMD.E. Shaw & Co.
−4,520 · 2025Q4
TRIMAQR Capital Management
−9,178 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−7,923 · 2025Q4
NEWWellington Management
+49,861 · 2025Q4
SOLDTwo Sigma Investments
−59,065 · 2025Q4
SOLDSteve Cohen (Point72)
−21,619 · 2025Q4
ADDT. Rowe Price
+10,144 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−52,417 · 2025Q4
NEWNorges Bank (Norway SWF)
+11,111 · 2025Q4
TRIMFirst Eagle Investment Management
−4,300 · 2025Q4
TRIMSteve Cohen (Point72)
−10,427 · 2025Q3
ADDTwo Sigma Investments
+30,617 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−128,361 · 2025Q3
TRIMD.E. Shaw & Co.
−500 · 2025Q3
ADDT. Rowe Price
+190,806 · 2025Q3
ADDAQR Capital Management
+11,762 · 2025Q3
SOLDNorges Bank (Norway SWF)
−13,450 · 2025Q3
SOLDMario Gabelli (GAMCO)
−3,564 · 2025Q3
TRIMNorges Bank (Norway SWF)
−21,783 · 2024Q3
ADDFirst Eagle Investment Management
+7,664 · 2025Q3

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