L3VLUP
ProSign in

ATRO · TDG 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.

ATROTDG
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.
  • ATRO
  • TDG
0102030202120222023202420252026
Holders and value by quarter
QuarterATROTDG
Q3 20202 holders, $756k20 holders, $3.5bn
Q4 20202 holders, $7.8m22 holders, $4.0bn
Q1 20211 holders, $7.3m15 holders, $3.5bn
Q2 20213 holders, $11m12 holders, $4.2bn
Q3 20212 holders, $4.9m14 holders, $3.7bn
Q4 20211 holders, $1.1m17 holders, $1.7bn
Q1 20222 holders, $6.8m14 holders, $1.7bn
Q2 20222 holders, $6.6m16 holders, $1.8bn
Q3 20222 holders, $5.3m15 holders, $2.3bn
Q4 20222 holders, $6.5m22 holders, $3.5bn
Q1 20231 holders, $4.5m22 holders, $6.2bn
Q2 20234 holders, $25m17 holders, $7.5bn
Q3 20233 holders, $20m19 holders, $7.6bn
Q4 20233 holders, $22m19 holders, $8.9bn
Q1 20243 holders, $23m22 holders, $11.7bn
Q2 20242 holders, $18m26 holders, $12.3bn
Q3 20242 holders, $19m21 holders, $13.0bn
Q4 20243 holders, $21m17 holders, $11.8bn
Q1 20253 holders, $25m21 holders, $13.0bn
Q2 20256 holders, $37m20 holders, $15.0bn
Q3 20255 holders, $42m12 holders, $13.8bn
Q4 20255 holders, $28m18 holders, $14.1bn
Q1 20268 holders, $120m19 holders, $13.4bn
Q2 20265 holders, $74m15 holders, $14.3bn
ATRO

Astronics Corp

Holders
6
Reported value
$37m
Buyers
4
Sellers
2

Breadth +2 among 95 comparable managers.

IndustrialsAerospace and defence
TDG

Transdigm Group Inc

Holders
20
Reported value
$15.0bn
Buyers
13
Sellers
7

Breadth +6 among 95 comparable managers.

IndustrialsAerospace and defence

Who holds both, Q2 2025

Among the 25 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only ATRO (5)

First Eagle Investment Management LLC, PDT Partners LLC, Polen Capital Management LLC, Quantbot Technologies LP, Schonfeld Strategic Advisors LLC

Only TDG (19)

AllianceBernstein LP, Artisan Partners LP, Capital Research Global Investors, Capital World Investors, D. E. Shaw & Co., Eisler Capital Management Ltd, Fidelity (FMR LLC), Holocene Advisors LP, Invesco Ltd, Marshall Wace LLP, MFS Investment Management, Neuberger Berman Group LLC, Renaissance Technologies LLC, Soroban Capital Partners LP, T. Rowe Price Associates Inc, Tudor Investment Corp, Voloridge Investment 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.

Back to the 13F Explorer →