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WLK · 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.

WLKHWM
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.
  • WLK
  • HWM
010203040202120222023202420252026
Holders and value by quarter
QuarterWLKHWM
Q3 20205 holders, $794m12 holders, $1.6bn
Q4 20208 holders, $996m21 holders, $3.0bn
Q1 202110 holders, $794m18 holders, $3.2bn
Q2 20217 holders, $325m19 holders, $3.8bn
Q3 202112 holders, $344m18 holders, $3.4bn
Q4 202111 holders, $315m15 holders, $3.7bn
Q1 20228 holders, $416m12 holders, $3.6bn
Q2 202210 holders, $373m15 holders, $3.2bn
Q3 202211 holders, $401m20 holders, $3.1bn
Q4 20228 holders, $681m19 holders, $4.4bn
Q1 20238 holders, $935m23 holders, $4.7bn
Q2 20237 holders, $709m25 holders, $5.2bn
Q3 20238 holders, $858m26 holders, $4.3bn
Q4 20239 holders, $963m22 holders, $5.0bn
Q1 20248 holders, $965m22 holders, $6.1bn
Q2 20247 holders, $832m23 holders, $7.1bn
Q3 20248 holders, $306m25 holders, $8.7bn
Q4 202410 holders, $430m21 holders, $9.0bn
Q1 202511 holders, $442m23 holders, $10.0bn
Q2 20257 holders, $252m22 holders, $13.2bn
Q3 20257 holders, $165m23 holders, $13.4bn
Q4 20259 holders, $654m26 holders, $13.6bn
Q1 202610 holders, $1.2bn35 holders, $15.6bn
Q2 20267 holders, $318m37 holders, $17.3bn
WLK

Westlake Corporation

Holders
9
Reported value
$963m
Buyers
4
Sellers
4

Breadth 0 among 93 comparable managers.

Materials
HWM

Howmet Aerospace Inc

Holders
22
Reported value
$5.0bn
Buyers
8
Sellers
15

Breadth -7 among 93 comparable managers.

Materials

Who holds both, Q4 2023

Among the 27 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only WLK (5)

Brevan Howard Capital Management LP, First Eagle Investment Management LLC, Quantbot Technologies LP, Soroban Capital Partners LP, Tudor Investment Corp

Only HWM (18)

AllianceBernstein LP, Arrowstreet Capital LP, Artisan Partners LP, Elliott Investment Management LP, Farallon Capital Management LLC, GAMCO Investors Inc, Harris Associates LP, Invesco Ltd, Janus Henderson Group Ltd, Maverick Capital Ltd, MFS Investment Management, Neuberger Berman Group LLC, PDT Partners LLC, Renaissance Technologies LLC, T. Rowe Price Associates Inc, Two Sigma Investments LP, Voloridge Investment Management LLC, Winton Group Ltd

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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