Ticker · CUSIP 016255101

ALGN

ALIGN TECHNOLOGY INC

Healthcare·Medical Instruments & Supplies

···Share

Holders (tracked)

Combined shares

5,674,272

Combined value

$886.04M

Last close

$190.07

Quarter

2025Q4

Price is +21.7% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$190.07+18.66 (+10.89%)H $207.19 · L $124.88 · Avg Vol 1.3M

Congress buyCongress sell

Tracked holders · last 8 quarters

+4 vs previous quarter over the last 8.

SEC event timeline

29 events

Jeremy Grantham (GMO) exited2026-02-17
−21,125 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+14,500 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−1,182 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+111,600 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−1,773,839 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) added2026-02-17
+335,860 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+6,503 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+474,756 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+112,032 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+484,733 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) added2026-02-13
+7,786 shares · 2025Q4
Position
Ruane, Cunniff & Goldfarb (Sequoia) opened position2026-02-13
+1,222,534 shares · 2025Q4
Position
Cathie Wood (ARK Invest) added2026-02-11
+2,930 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+996,197 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) exited2026-02-09
−59,373 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−457,395 shares · 2025Q3
Position
Two Sigma Investments opened position2025-11-14
+9,543 shares · 2025Q3
Position
D.E. Shaw & Co. opened position2025-11-14
+51,717 shares · 2025Q3
Position
T. Rowe Price trimmed2025-11-14
−1,515 shares · 2025Q3
Position
Wellington Management trimmed2025-11-14
−315,690 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+189,527 shares · 2025Q3
Position
Renaissance Technologies exited2025-11-13
−2,100 shares · 2025Q3
Position
Jeremy Grantham (GMO) added2025-11-13
+15,133 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−820,243 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) added2025-11-13
+15,945 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−14,962 shares · 2024Q3
Position
Ken Fisher (Fisher Asset Mgmt) added2025-11-12
+6,482 shares · 2025Q3
Position
First Eagle Investment Management exited2025-11-12
−995 shares · 2025Q3
Position
Cathie Wood (ARK Invest) added2025-11-12
+3 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for ALGN →

Follow-the-investor returns

If you'd copied each holder of ALGN…

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
Ray Dalio (Bridgewater Associates)	2018Q2	$152.30	+24.8%	$4.9M
D.E. Shaw & Co.	2016Q3	$152.69	+24.5%	$399K
D.E. Shaw & Co.	2016Q3	$152.69	+24.5%	$399K
D.E. Shaw & Co.	2016Q3	$152.69	+24.5%	$399K
Ken Griffin (Citadel Advisors)	2016Q1	$153.59	+23.8%	$43.6M
Ken Griffin (Citadel Advisors)	2016Q1	$153.59	+23.8%	$43.6M
Ken Griffin (Citadel Advisors)	2016Q1	$153.59	+23.8%	$43.6M
Izzy Englander (Millennium Mgmt)	2016Q1	$155.18	+22.5%	$10.7M
Izzy Englander (Millennium Mgmt)	2016Q1	$155.18	+22.5%	$10.7M
Izzy Englander (Millennium Mgmt)	2016Q1	$155.18	+22.5%	$10.7M
Ruane, Cunniff & Goldfarb (Sequoia)	2025Q4	$156.15	+21.7%	$232.4M
Two Sigma Investments	2016Q1	$163.03	+16.6%	$23.1M
Paul Tudor Jones (Tudor Investment)	2016Q2	$166.56	+14.1%	$4.4M
Paul Tudor Jones (Tudor Investment)	2016Q2	$166.56	+14.1%	$4.4M
AQR Capital Management	2016Q1	$171.55	+10.8%	$227.4M
Steve Cohen (Point72)	2016Q1	$243.63	-22.0%	$1.5M
Steve Cohen (Point72)	2016Q1	$243.63	-22.0%	$1.5M
Wellington Management	2016Q1	$290.58	-34.6%	$14.4M
Cathie Wood (ARK Invest)	2016Q4	$304.80	-37.6%	$1.7M
T. Rowe Price	2016Q1	$385.42	-50.7%	$18.8M
Norges Bank (Norway SWF)	2016Q1	$4084.20	-95.3%	$189.3M

Who moved on this name in 2025Q4

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

New positions4

Ruane, Cunniff & Goldfarb (Sequoia)
+1,222,534
$190.9M
Norges Bank (Norway SWF)
+996,197
$155.6M
Paul Tudor Jones (Tudor Investment)
+111,600
$17.4M
Steve Cohen (Point72)
+14,500
$2.3M

Added to7

Izzy Englander (Millennium Mgmt)
+484,733
$75.7M
AQR Capital Management
+474,756
$74.1M
Ken Griffin (Citadel Advisors)
+335,860
$52.4M
Two Sigma Investments
+112,032
$17.5M
Ray Dalio (Bridgewater Associates)
+7,786
$1.2M
D.E. Shaw & Co.
+6,503
$1.0M
Cathie Wood (ARK Invest)
+2,930
$458K

Trimmed2

Wellington Management
−1,773,839
$277.0M
T. Rowe Price
−1,182
$185

Exited2

Ken Fisher (Fisher Asset Mgmt)
−59,373
$7.4M
Jeremy Grantham (GMO)
−21,125
$2.6M

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	23	15,854,131	$334.10B	—
2022Q2	24	16,259,179	$163.70B	+1
2022Q3	24	14,978,127	$3.10B	—
2022Q4	25	15,411,811	$3.25B	+1
2023Q1	21	14,787,999	$4.94B	-4
2023Q2	22	14,384,699	$5.09B	+1
2023Q3	22	10,976,996	$3.35B	—
2023Q4	20	12,268,677	$3.36B	-2
2024Q1	20	13,495,960	$4.43B	—
2024Q2	23	14,715,735	$3.55B	+3
2024Q3	22	8,511,569	$2.16B	-1
2024Q4	20	4,838,996	$1.01B	-2
2025Q1	20	6,018,419	$955.0M	—
2025Q2	20	6,705,809	$1.27B	—
2025Q3	17	3,869,860	$484.5M	-3
2025Q4	21	5,674,272	$886.0M	+4

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2025-09-11	Lisa McClain	Sell	$1K – $15K	PDF ↗
2025-08-04	Lisa McClain	Buy	$1K – $15K	PDF ↗
2025-04-08	Rob Bresnahan	Sell	$1K – $15K	PDF ↗
2025-02-26	Gilbert Cisneros	Sell	$1K – $15K	PDF ↗
2025-02-25	Rob Bresnahan	Buy	$1K – $15K	PDF ↗

Who owns ALGN

21 super-investors · 2025Q4

Tracked stake

5.67M

Combined value

$886M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New6Added13Trim2

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Ruane, Cunniff & Goldfarb Sequoia	1.22M	$191M	3.0%	New+1.22M	—
2	AQR Capital Management	1.20M	$187M	0.1%	Added+474.8K
3	Norges Bank Norway SWF	996.2K	$156M	0.0%	New+996.2K
4	Izzy Englander Millennium Mgmt	780.8K	$122M	0.1%	Added+484.7K
5	Ken Griffin Citadel Advisors	520.5K	$81M	0.0%	Added+335.9K
6	Ken Griffin Citadel Advisors	229.3K	$36M	0.0%	Added+335.9K
7	Two Sigma Investments	121.6K	$19M	0.0%	Added+112.0K
8	Ken Griffin Citadel Advisors	108.6K	$17M	0.0%	Added+335.9K
9	T. Rowe Price	99.0K	$15M	0.0%	Trim−1.2K
10	Paul Tudor Jones Tudor Investment	88.7K	$14M	0.0%	New+111.6K
11	Wellington Management	76.0K	$12M	0.0%	Trim−1.77M
12	D.E. Shaw & Co.	58.2K	$9M	0.0%	Added+6.5K
13	Izzy Englander Millennium Mgmt	56.3K	$9M	0.0%	Added+484.7K
14	Izzy Englander Millennium Mgmt	31.0K	$5M	0.0%	Added+484.7K
15	Ray Dalio Bridgewater Associates	26.0K	$4M	0.0%	Added+7.8K
16	Paul Tudor Jones Tudor Investment	22.9K	$4M	0.0%	New+111.6K
17	D.E. Shaw & Co.	14.6K	$2M	0.0%	Added+6.5K
18	Cathie Wood ARK Invest	9.1K	$1M	0.0%	Added+2.9K
19	Steve Cohen Point72	8.0K	$1M	0.0%	New+14.5K
20	Steve Cohen Point72	6.5K	$1M	0.0%	New+14.5K
21	D.E. Shaw & Co.	2.1K	$328K	0.0%	Added+6.5K

Recent moves

20 transactions

NEWPaul Tudor Jones (Tudor Investment)
+111,600 · 2025Q4
TRIMWellington Management
−1,773,839 · 2025Q4
SOLDJeremy Grantham (GMO)
−21,125 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+335,860 · 2025Q4
ADDAQR Capital Management
+474,756 · 2025Q4
ADDTwo Sigma Investments
+112,032 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+484,733 · 2025Q4
NEWSteve Cohen (Point72)
+14,500 · 2025Q4
TRIMT. Rowe Price
−1,182 · 2025Q4
ADDD.E. Shaw & Co.
+6,503 · 2025Q4
ADDRay Dalio (Bridgewater Associates)
+7,786 · 2025Q4
NEWRuane, Cunniff & Goldfarb (Sequoia)
+1,222,534 · 2025Q4
ADDCathie Wood (ARK Invest)
+2,930 · 2025Q4
NEWNorges Bank (Norway SWF)
+996,197 · 2025Q4
SOLDKen Fisher (Fisher Asset Mgmt)
−59,373 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−457,395 · 2025Q3
NEWD.E. Shaw & Co.
+51,717 · 2025Q3
NEWTwo Sigma Investments
+9,543 · 2025Q3
TRIMT. Rowe Price
−1,515 · 2025Q3
TRIMWellington Management
−315,690 · 2025Q3

Embed this chart

Paste this iframe anywhere to embed the live ALGN chart.

<iframe src="https://openstocks.me/embed/stocks/ALGN" width="100%" height="480" frameborder="0" loading="lazy" title="ALGN chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>

Preview: https://openstocks.me/embed/stocks/ALGN

Explore related topics