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ROG · GLW in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

ROGGLW
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • ROG
  • GLW
010203040202120222023202420252026
Holders and value by quarter
QuarterROGGLW
Q3 20203 holders, $235m11 holders, $3.4bn
Q4 20202 holders, $370m18 holders, $3.6bn
Q1 20213 holders, $611m11 holders, $4.6bn
Q2 20213 holders, $662m16 holders, $4.0bn
Q3 20213 holders, $627m14 holders, $3.2bn
Q4 202112 holders, $419m16 holders, $3.1bn
Q1 20228 holders, $192m18 holders, $2.6bn
Q2 20228 holders, $172m14 holders, $2.3bn
Q3 20227 holders, $81m14 holders, $1.6bn
Q4 20228 holders, $107m12 holders, $1.7bn
Q1 20236 holders, $340m18 holders, $2.3bn
Q2 20233 holders, $376m10 holders, $1.9bn
Q3 20234 holders, $275m8 holders, $1.4bn
Q4 20234 holders, $317m12 holders, $1.6bn
Q1 20244 holders, $343m11 holders, $2.2bn
Q2 20243 holders, $193m11 holders, $3.3bn
Q3 20243 holders, $184m17 holders, $4.3bn
Q4 20244 holders, $193m22 holders, $4.1bn
Q1 20255 holders, $140m24 holders, $3.1bn
Q2 20253 holders, $76m25 holders, $3.3bn
Q3 20255 holders, $257m26 holders, $6.2bn
Q4 20256 holders, $284m27 holders, $7.2bn
Q1 20265 holders, $262m33 holders, $12.8bn
Q2 20265 holders, $246m26 holders, $23.6bn
ROG

Rogers Corp

Holders
3
Reported value
$76m
Buyers
3
Sellers
0

Breadth +3 among 95 comparable managers.

Materials
GLW

Corning Inc

Holders
25
Reported value
$3.3bn
Buyers
14
Sellers
12

Breadth +2 among 95 comparable managers.

Materials

Who holds both, Q2 2025

Among the 26 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only ROG (1)

Starboard Value LP

Only GLW (23)

Acadian Asset Management LLC, Appaloosa LP, AQR Capital Management LLC, Balyasny Asset Management LLC, Brevan Howard Capital Management LP, D. E. Shaw & Co., Dodge & Cox, ExodusPoint Capital Management LP, Invesco Ltd, Marshall Wace LLP, MFS Investment Management, Millennium Management LLC, Neuberger Berman Group LLC, PDT Partners LLC, Point72 Asset Management LP, Rokos Capital Management LLP, Squarepoint Ops LLC, T. Rowe Price Associates Inc, Walleye Capital LLC, Wellington Management Group LLP, Whale Rock Capital Management LLC, Winton Group Ltd, Woodline Partners LP

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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