13F institutional ownership facts

Institutions tracked

35

Reported value

$33,504,108.00

Reported shares

1,660,263

Latest filing period

Q2 2026

Top institutional holders

  1. David E. Shaw - D.E. Shaw & Co. · $17,900,629 · 0.01%
  2. Renaissance Technologies · $10,596,518 · 0.01%
  3. Josef Lakonishok - Lsv Asset Management · $12,956,000 · 0.02%
  4. PSP Investments · $2,353,957 · 0.01%
  5. Two Sigma Investments · $5,006,961 · <0.01%%
  6. Jane Street Group · $3,606,852 · <0.01%%

Data source and limitations

This page uses public SEC Form 13F disclosures and related institutional filing data. 13F reports are periodic disclosures and may not represent current real-time holdings.

13F Hub provides research and education data only. It does not provide personalized investment advice.

$AMPH

Institutional Holdings

35

Top Institutions

Top Institutions

1

David E. Shaw - D.E. Shaw & Co.

887,048 shares

0.01%

% of Portfolio

2

Renaissance Technologies

525,100 shares

0.01%

% of Portfolio

3

Josef Lakonishok - Lsv Asset Management

642,014 shares

0.02%

% of Portfolio

4

PSP Investments

116,648 shares

0.01%

% of Portfolio

5

Two Sigma Investments

248,115 shares

NaN%

% of Portfolio

6

Jane Street Group

178,734 shares

NaN%

% of Portfolio

7

Steve Cohen - Point72 Asset Management

54,964 shares

NaN%

% of Portfolio

8

Robeco Institutional Asset Management

66,407 shares

NaN%

% of Portfolio

9

Larry Fink - BlackRock

5,224,934 shares

NaN%

% of Portfolio

10

Cliff Asness - AQR Capital Management

208,651 shares

NaN%

% of Portfolio

11

UBS Group

393,110 shares

NaN%

% of Portfolio

12

David Solomon - Goldman Sachs

505,360 shares

NaN%

% of Portfolio

13

Geode Capital Management

969,840 shares

NaN%

% of Portfolio

14

State Street Corp

1,642,126 shares

NaN%

% of Portfolio

15

Northern Trust Corp

370,991 shares

NaN%

% of Portfolio

16

Charles Schwab

310,178 shares

NaN%

% of Portfolio

17

New York State Teachers Retirement System - New York State Teachers Retirement System

21,180 shares

NaN%

% of Portfolio

18

BNP Paribas

54,663 shares

NaN%

% of Portfolio

19

Joel Greenblatt - Gotham Asset Management

10,139 shares

NaN%

% of Portfolio

20

Morgan Stanley

434,840 shares

NaN%

% of Portfolio

21

Israel Englander - Millennium Management

31,814 shares

NaN%

% of Portfolio

22

Nuveen

88,397 shares

NaN%

% of Portfolio

23

SG Americas Securities

31,709 shares

NaN%

% of Portfolio

24

Legal & General

78,281 shares

NaN%

% of Portfolio

25

Invesco

158,064 shares

NaN%

% of Portfolio

26

Ken Griffin - Citadel Advisors

16,231 shares

NaN%

% of Portfolio

27

Canada Pension Plan Investment Board

11,500 shares

NaN%

% of Portfolio

28

Franklin Resources

24,986 shares

NaN%

% of Portfolio

29

T. Rowe Price

51,103 shares

NaN%

% of Portfolio

30

Jamie Dimon - JPMorgan Chase

57,563 shares

NaN%

% of Portfolio

31

PNC Financial Services

5,004 shares

NaN%

% of Portfolio

32

Chuck Royce - Royce & Associates

294,758 shares

0.05%

% of Portfolio

33

Segall Bryant & Hamill, LLC

33,318 shares

0.01%

% of Portfolio

34

Verition Fund Management LLC

0 shares

0.00%

% of Portfolio

35

John Hussman - Hussman Strategic Advisors

0 shares

0.00%

% of Portfolio

Institutional InsightPRO

Scale Distribution

MEGA

29%

LARGE

23%

MEDIUM

27%

SMALL

21%

Geographic Distribution

North America
59%
Europe
23%
Asia Pacific
8%
Other
5%

Institutional Activity

Buyers

34

Sellers

18

Holders

92

New

9

Exited

13

Unlock Pro to view full data

Insider TradingPRO

Trading Statistics

Insider Buyers

12

Insider Sellers

18

Purchase Value

$24.4M

Role Distribution

CEO
24%
CFO
15%
Director
30%
VP
12%
Other
5%
Unlock Pro to view full data

RatingPRO

89

A

Overall Score

Strong institutional support with positive momentum

Rating Dimensions

Institutional Ownership
84
Recent Activity
68
Concentration
72
Momentum
81
Stability
60

Recent Actions

New

9

Increased

23

Decreased

20

Exited

6

Total

50

Unlock Pro to view full data