Ticker · CUSIP 02157Q109

ANRO

ALTO NEUROSCIENCE INC

Healthcare·Biotechnology

···Share

Holders (tracked)

Combined shares

2,728,467

Combined value

$48.57M

Last close

$27.72

Quarter

2025Q4

Price is +55.7% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$27.72+25.46 (+1126.55%)H $27.72 · L $2.17 · Avg Vol 598K

Position opened

Tracked holders · last 8 quarters

+1 vs previous quarter over the last 8.

SEC event timeline

15 events

Ken Griffin (Citadel Advisors) trimmed2026-02-17
−24,179 shares · 2025Q4
Position
D.E. Shaw & Co. opened position2026-02-17
+124,795 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+23,738 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+314,227 shares · 2025Q4
Position
Steve Cohen (Point72) added2026-02-17
+274,517 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−29,200 shares · 2025Q4
Position
Wellington Management opened position2026-02-17
+69,016 shares · 2025Q4
Position
AQR Capital Management exited2026-02-17
−30,412 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+21,627 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+12,896 shares · 2025Q3
Position
AQR Capital Management trimmed2025-11-14
−46,100 shares · 2025Q3
Position
Steve Cohen (Point72) added2025-11-14
+2,682 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+71,844 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+41,072 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-12
−76,672 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for ANRO →

Follow-the-investor returns

If you'd copied each holder of ANRO…

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
Ken Griffin (Citadel Advisors)	2024Q1	$3.37	+723.3%	$360K
Ken Griffin (Citadel Advisors)	2024Q1	$3.37	+723.3%	$360K
Renaissance Technologies	2025Q2	$6.43	+331.0%	$2.7M
Two Sigma Investments	2024Q3	$6.72	+312.8%	$3.9M
Izzy Englander (Millennium Mgmt)	2024Q1	$10.31	+168.9%	$17.5M
Steve Cohen (Point72)	2024Q1	$11.39	+143.3%	$44.5M
Wellington Management	2024Q3	$12.21	+127.0%	$1.9M
T. Rowe Price	2024Q1	$12.98	+113.6%	$838K
D.E. Shaw & Co.	2025Q4	$17.80	+55.7%	$3.5M

Who moved on this name in 2025Q4

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

New positions2

D.E. Shaw & Co.
+124,795
$2.2M
Wellington Management
+69,016
$1.2M

Added to4

Izzy Englander (Millennium Mgmt)
+314,227
$5.6M
Steve Cohen (Point72)
+274,517
$4.9M
Two Sigma Investments
+23,738
$423K
Renaissance Technologies
+21,627
$385K

Trimmed2

Ken Griffin (Citadel Advisors)
−24,179
$430K
T. Rowe Price
−29,200
$521

Exited1

AQR Capital Management
−30,412
$122K

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2024Q1	6	2,225,909	$34.2M	—
2024Q2	5	2,360,303	$25.2M	-1
2024Q3	7	1,934,772	$22.1M	+2
2024Q4	6	3,572,862	$15.1M	-1
2025Q1	8	1,889,991	$4.1M	+2
2025Q2	7	1,862,192	$4.1M	-1
2025Q3	8	1,980,738	$8.0M	+1
2025Q4	9	2,728,467	$48.6M	+1

Who owns ANRO

9 super-investors · 2025Q4

Tracked stake

2.73M

Combined value

$49M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added4Trim3

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Steve Cohen Point72	1.61M	$29M	0.0%	Added+274.5K
2	Izzy Englander Millennium Mgmt	630.0K	$11M	0.0%	Added+314.2K
3	Two Sigma Investments	140.3K	$2M	0.0%	Added+23.7K
4	D.E. Shaw & Co.	124.8K	$2M	0.0%	New+124.8K	—
5	Renaissance Technologies	97.4K	$2M	0.0%	Added+21.6K
6	Wellington Management	69.0K	$1M	0.0%	New+69.0K
7	T. Rowe Price	30.2K	$539K	0.0%	Trim−29.2K
8	Ken Griffin Citadel Advisors	16.8K	$299K	0.0%	Trim−24.2K
9	Ken Griffin Citadel Advisors	13.0K	$231K	0.0%	Trim−24.2K

Recent moves

20 transactions

ADDTwo Sigma Investments
+23,738 · 2025Q4
SOLDAQR Capital Management
−30,412 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−24,179 · 2025Q4
NEWWellington Management
+69,016 · 2025Q4
NEWD.E. Shaw & Co.
+124,795 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+314,227 · 2025Q4
ADDSteve Cohen (Point72)
+274,517 · 2025Q4
TRIMT. Rowe Price
−29,200 · 2025Q4
ADDRenaissance Technologies
+21,627 · 2025Q4
ADDTwo Sigma Investments
+71,844 · 2025Q3
TRIMAQR Capital Management
−46,100 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+12,896 · 2025Q3
ADDSteve Cohen (Point72)
+2,682 · 2025Q3
ADDRenaissance Technologies
+41,072 · 2025Q3
SOLDNorges Bank (Norway SWF)
−76,672 · 2024Q3
ADDIzzy Englander (Millennium Mgmt)
+286,683 · 2025Q2
ADDTwo Sigma Investments
+18,593 · 2025Q2
ADDSteve Cohen (Point72)
+89,702 · 2025Q2
ADDT. Rowe Price
+5,499 · 2025Q2
ADDAQR Capital Management
+52,413 · 2025Q2

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