Ticker · CUSIP 852312305

STAA

STAAR SURGICAL CO

Healthcare·Medical Instruments & Supplies

···Share

Holders (tracked)

Combined shares

954,131

Combined value

$22.03M

Last close

$25.08

Quarter

2025Q4

Price is +8.6% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$25.08+8.19 (+48.49%)H $28.57 · L $16.10 · Avg Vol 1.3M

Tracked holders · last 8 quarters

-1 vs previous quarter over the last 8.

SEC event timeline

16 events

AQR Capital Management added2026-02-17
+174 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+45,600 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−295 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) added2026-02-17
+61,701 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+334,272 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+1,234 shares · 2025Q4
Position
Renaissance Technologies opened position2026-02-12
+37,800 shares · 2025Q4
Position
Mario Gabelli (GAMCO) added2026-02-05
+4,000 shares · 2025Q4
Position
AQR Capital Management opened position2025-11-14
+15,118 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+7,411 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−293,524 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−106,355 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+6,770 shares · 2025Q3
Position
Renaissance Technologies exited2025-11-13
−31,900 shares · 2025Q3
Position
Mario Gabelli (GAMCO) opened position2025-11-12
+11,000 shares · 2025Q3
Position
Norges Bank (Norway SWF) opened position2025-11-12
+272,445 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for STAA →

Follow-the-investor returns

If you'd copied each holder of STAA…

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
D.E. Shaw & Co.	2016Q1	$18.69	+34.2%	$442K
Two Sigma Investments	2016Q1	$19.52	+28.5%	$2.9M
Ken Griffin (Citadel Advisors)	2016Q3	$23.60	+6.3%	$5.1M
Paul Tudor Jones (Tudor Investment)	2018Q2	$24.45	+2.6%	$1.1M
Izzy Englander (Millennium Mgmt)	2017Q2	$25.59	-2.0%	$11.3M
Mario Gabelli (GAMCO)	2025Q3	$25.86	-3.0%	$376K
Renaissance Technologies	2016Q1	$38.31	-34.5%	$948K
AQR Capital Management	2018Q2	$40.37	-37.9%	$384K
T. Rowe Price	2020Q2	$51.57	-51.4%	$1.3M

Who moved on this name in 2025Q4

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

New positions2

Paul Tudor Jones (Tudor Investment)
+45,600
$1.1M
Renaissance Technologies
+37,800
$873K

Added to5

Izzy Englander (Millennium Mgmt)
+334,272
$7.7M
Ken Griffin (Citadel Advisors)
+61,701
$1.4M
Mario Gabelli (GAMCO)
+4,000
$92K
AQR Capital Management
+174
$4K
T. Rowe Price
+1,234
$29

Trimmed1

D.E. Shaw & Co.
−295
$7K

Exited0

—

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	15	12,224,447	$33.48B	—
2022Q2	16	11,864,632	$31.28B	+1
2022Q3	16	11,756,396	$829.4M	—
2022Q4	18	12,285,566	$596.3M	+2
2023Q1	16	12,084,438	$772.8M	-2
2023Q2	17	13,636,489	$716.9M	+1
2023Q3	15	14,859,399	$597.1M	-2
2023Q4	11	14,422,029	$450.1M	-4
2024Q1	10	12,463,540	$477.1M	-1
2024Q2	12	11,877,670	$565.5M	+2
2024Q3	13	4,334,918	$161.0M	+1
2024Q4	12	2,709,633	$65.8M	-1
2025Q1	10	889,477	$15.7M	-2
2025Q2	8	1,383,423	$23.2M	-2
2025Q3	10	605,345	$16.3M	+2
2025Q4	9	954,131	$22.0M	-1

Who owns STAA

9 super-investors · 2025Q4

Tracked stake

954.1K

Combined value

$22M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added5Trim1Held1

#	Manager	Shares	Value	% of book	Last action
1	Izzy Englander Millennium Mgmt	451.3K	$10M	0.0%	Added+334.3K
2	Ken Griffin Citadel Advisors	205.1K	$5M	0.0%	Added+61.7K
3	Two Sigma Investments	113.9K	$3M	0.0%	Held
4	T. Rowe Price	52.5K	$1M	0.0%	Added+1.2K
5	Paul Tudor Jones Tudor Investment	45.6K	$1M	0.0%	New+45.6K
6	Renaissance Technologies	37.8K	$873K	0.0%	New+37.8K
7	D.E. Shaw & Co.	17.6K	$407K	0.0%	Trim−295
8	AQR Capital Management	15.3K	$353K	0.0%	Added+174
9	Mario Gabelli GAMCO	15.0K	$346K	0.0%	Added+4.0K

Recent moves

20 transactions

NEWPaul Tudor Jones (Tudor Investment)
+45,600 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+61,701 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+334,272 · 2025Q4
ADDT. Rowe Price
+1,234 · 2025Q4
TRIMD.E. Shaw & Co.
−295 · 2025Q4
ADDAQR Capital Management
+174 · 2025Q4
NEWRenaissance Technologies
+37,800 · 2025Q4
ADDMario Gabelli (GAMCO)
+4,000 · 2025Q4
TRIMD.E. Shaw & Co.
−106,355 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+7,411 · 2025Q3
TRIMTwo Sigma Investments
−293,524 · 2025Q3
ADDT. Rowe Price
+6,770 · 2025Q3
NEWAQR Capital Management
+15,118 · 2025Q3
SOLDRenaissance Technologies
−31,900 · 2025Q3
NEWNorges Bank (Norway SWF)
+272,445 · 2024Q3
NEWMario Gabelli (GAMCO)
+11,000 · 2025Q3
ADDD.E. Shaw & Co.
+83,509 · 2025Q2
ADDTwo Sigma Investments
+318,977 · 2025Q2
ADDT. Rowe Price
+2,804 · 2025Q2
TRIMIzzy Englander (Millennium Mgmt)
−66,369 · 2025Q2

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