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ROCK · HWM 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.

ROCKHWM
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.
  • ROCK
  • HWM
010203040202120222023202420252026
Holders and value by quarter
QuarterROCKHWM
Q3 20203 holders, $237m12 holders, $1.6bn
Q4 20203 holders, $269m21 holders, $3.0bn
Q1 20213 holders, $333m18 holders, $3.2bn
Q2 20212 holders, $3.7m19 holders, $3.8bn
Q3 20212 holders, $4.1m18 holders, $3.4bn
Q4 20212 holders, $4.6m15 holders, $3.7bn
Q1 20223 holders, $6.3m12 holders, $3.6bn
Q2 20224 holders, $8.8m15 holders, $3.2bn
Q3 20223 holders, $8.0m20 holders, $3.1bn
Q4 20222 holders, $6.1m19 holders, $4.4bn
Q1 20232 holders, $8.0m23 holders, $4.7bn
Q2 20233 holders, $12m25 holders, $5.2bn
Q3 20234 holders, $40m26 holders, $4.3bn
Q4 20236 holders, $79m22 holders, $5.0bn
Q1 20245 holders, $67m22 holders, $6.1bn
Q2 20244 holders, $70m23 holders, $7.1bn
Q3 20242 holders, $11m25 holders, $8.7bn
Q4 20241 holders, $5.1m21 holders, $9.0bn
Q1 20252 holders, $123m23 holders, $10.0bn
Q2 20252 holders, $8.9m22 holders, $13.2bn
Q3 20251 holders, $5.7m23 holders, $13.4bn
Q4 20253 holders, $90m26 holders, $13.6bn
Q1 20264 holders, $115m35 holders, $15.6bn
Q2 20263 holders, $95m37 holders, $17.3bn
ROCK

Gibraltar Industries Inc

Holders
5
Reported value
$67m
Buyers
3
Sellers
2

Breadth +1 among 93 comparable managers.

Materials
HWM

Howmet Aerospace Inc

Holders
22
Reported value
$6.1bn
Buyers
13
Sellers
8

Breadth +5 among 93 comparable managers.

Materials

Who holds both, Q1 2024

Among the 24 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only ROCK (2)

First Eagle Investment Management LLC, Point72 Asset Management LP

Only HWM (19)

AllianceBernstein LP, AQR Capital Management LLC, Capital Research Global Investors, Capital World Investors, Eisler Capital Management Ltd, Element Capital Management LLC, Elliott Investment Management LP, Farallon Capital Management LLC, Fidelity (FMR LLC), Harris Associates LP, Invesco Ltd, Janus Henderson Group Ltd, Maverick Capital Ltd, MFS Investment Management, Moore Capital Management LP, PDT Partners LLC, Quantbot Technologies LP, T. Rowe Price Associates Inc, Two Sigma Investments 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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